Products

Dynatrac has created Axle Sets, pairing completely assembled and ready to run front and rear Dynatrac axles designed for specific types of Jeep Wrangler JK builds. It's now easier than ever to determine what Dynatrac axles will be ideal for the type of JK build you have. Purchasing these axles in our pre-configured sets saves you money, and lots of it!

All of these new Dynatrac Axle Sets™ include the U.S.-patented ProRock® design, providing you with the absolute best ground clearance. And these axles are 100% designed, manufactured and assembled in the U.S. using U.S.-sourced steel. That's something that you as a customer and us as a manufacturer can be proud of!

Company created the Trail Leader Axle Package™ for Jeep JK owners who enjoy moderate off-roading and want reliable drivetrain durability after upgrading to 33- to 37-inch-tall tires. This package gives you all the Dynatrac strength and durability you need without requiring wheel changes or other costly upgrades that simply aren't necessary for the type of off-roading you do.

The Trail Leader Axle Package™ includes an assembled ProRock 44™ Unlimited front axle with 1/2-inch thick axle tube walls complete with Dynatrac HD Rebuildable Balljoints, Dynatrac Pro Series™ diff cover, front Dynatrac axleshafts, ARB air Locker and ring-and-pinion gear set. Move your factory spindles and brakes onto this new front axle and the assembly is ready to bot into your Jeep! The package also includes the following to upgrade your factory Dana 44: Dynatrac JK44 Axleshaft Upgrade Kit™, 35-spline ARB Air Locker, Dynatrac Pro Series™ diff cover, ring-and-pinion gear set and a set-up kit.

NOTE: The Trail Leader Axle Package™ is only for non-Rubicon Jeep JK models. If you own a Rubicon model, please have a look at ProRock 44 front axle housing upgrade and Serious Performance Axle Set™.

What You Get:

ProRock 44™ Unlimited Front Axle

• Dynatrac-exclusive patented ProRock® nodular-iron, high-pinion ProRock 44™ centersection with control arm bushings installed.
• Best-in-class ground clearance and more ground clearance than a factory Dana 30.
• 3-inch-diameter x ½-inch-thick wall tubing that is 3 times stronger than any stock JK Dana 44 housing.
• Dynatrac’s U.S.-made forged, double-heat-treated 1350 axleshaft assemblies are included. You get our latest inner and outer 4340 shafts with new U-joints installed.
• Dynatrac HD BallJoints™ are already installed; the last balljoints you’ll ever need.
• Includes our latest integrated raised track-bar and ram-assist steering mounting package. Dynatrac now offers the very best high-strength steering linkage and integrated ram-assist bracket in the industry.
• Dynatrac precision-aligned, alloy-steel end forgings, 100% made in the USA.
• ProRock 44™ Unlimited housing geometry for superior handling and optimal pinion and driveshaft angle for lifted JKs.
• Rock-proof nodular-iron Dynatrac diff cover.
• All HD suspension brackets are CNC laser-cut and professionally welded and installed, including high-mount track-bar bracket setup for lifted JKs with top-down mounted drag links and high-steering packages.
• 1350 yoke.
• ARB Air Locker.
• Axle includes your choice of available selectable lockers and 4.88, 5.13 or 5.38 gear sets.

Dynatrac 35-Spline JK44 Rear Dana 44 Upgrade Kit

• Dynatrac 35-Spline JK44 Axleshaft Kit.
• 35-spline ARB Air Locker (including bearing and shims).
• Dynatrac Pro Series™ nodular-iron differential cover.
• Ring and Pinion gear set.
• Gear installation and set-up kit.

All the strength your JK Dana 44 rear axle will ever need! This rear JK44 Axleshaft Bundle Kit increases the shaft diameter to from 30- to 35-spline. The shafts feature Dynatrac proprietary deep heat-treat for optimum yield strength (resistance to twisting) without making the axleshafts brittle. The shafts are U.S.-made, equipped with rolled splines and include new wheel studs, billet steel retainers, seals and all of the hardware that will be needed for installation. If you need more strength than this, then you need a Dynatrac ProRock® rear axle!

JK44 Axleshaft™ Features Include:

• U.S. Made 35-spline axleshafts.
• New billet tone rings already installed on the axleshafts.
• Dynatrac Billet Axleshaft Retainers with studs - Always insist on Dynatrac retainers. Our studs will not strip and spin like other retainers.
• Axleshafts are drilled with BOTH wheel bolt patterns.
• Dynatrac install the studs for you in the right pattern when you order the kit.
• This kit has the studs installed for the factory bolt pattern.
• Rear axleshaft kit fits factory Dana 44 (not for the Rubicon version).
• Axleshafts come complete and ready to install (no additional work needed) Dynatrac do ALL the press work for you!!!
• No modifications to housing is needed.
• New axleshaft bearings and seals are included.

NOTE: The new ram assist/steering stabilizer bracket for the ProRock44 is not compatible with Reid Racing knuckles.

Ideal for Jeep JK owners who need reliable drivetrain durability after upgrading to 33- to 37-inch-tall tires and want to save $1,500 to $2,500 by not buying new wheels when upgrading to stronger axles.

You get an assembled ProRock 44™ front axle and ProRock 60® semi-float rear axle, giving you the Confidence to Explore® off-roading with your family with the security of reliable, high-quality, U.S.-made axle assemblies.

In addition to best-in-class axles, you also get an exclusive integrated raised- track-bar bracket and hydraulic-ram steering assist mount, Dynatrac HD Balljoints™, the last balljoints you’ll ever need.

What You Get:

ProRock 44™ Unlimited Front Axle

• Dynatrac-exclusive patented ProRock® nodular-iron, high-pinion ProRock 44™ centersection with control arm bushings installed.
• Best-in-class ground clearance and more ground clearance than a factory Dana 30.
• 3-inch-diameter x ½-inch-thick wall tubing that is 3 times stronger than any stock JK Dana 44 housing.
• Dynatrac’s U.S.-made forged, double-heat-treated 1350 axleshaft assemblies are included. You get our latest inner and outer 4340 shafts with new U-joints installed.
• Dynatrac HD BallJoints™ are already installed; the last balljoints you’ll ever need.
• Includes our latest integrated raised track-bar and ram-assist steering mounting package. Dynatrac now offers the very best high-strength steering linkage and integrated ram-assist bracket in the industry.
• Dynatrac precision-aligned, alloy-steel end forgings, 100% made in the USA.
• ProRock 44™ Unlimited housing geometry for superior handling and optimal pinion and driveshaft angle for lifted JKs.
• Rock-proof nodular-iron Dynatrac diff cover.
• All HD suspension brackets are CNC laser-cut and professionally welded and installed, including high-mount track-bar bracket setup for lifted JKs with top-down mounted drag links and high-steering packages.
• Axle includes your choice of available selectable lockers and 4.88, 5.13 or 5.38 gear sets.

NOTE:This ProRock 44™ assembly does not include spindles, hubs or brakes - customer is to reuse the spindles, hubs and brakes from their Jeep.

ProRock 60® Semi-Float Rear Axle

• Dynatrac-exclusive patented ProRock® nodular-iron, high-pinion ProRock 60® centersection.
• Best-in-class ground clearance with more ground clearance than a factory Dana 44.
• 3.125-inch-diameter by 0.313-inch-thick wall tubing that’s 2.5 times stronger than any stock JK Dana 44 rear housing.
• Dynatrac exclusive Dual-Sump High Volume™ (DSHV) oiling system to ensure the outer pinion bearing is never without lubrication.
• Dynatrac U.S.-made forged, heat-treated, 35-spline alloy-steel shafts.
• ProRock 60® high-pinion housing geometry for long suspension travel, and a 2.75-inch raised driveshaft height to protect driveshaft and U-joint from impact with rocks and trail obstacles.
• Rock-proof nodular-iron Dynatrac diff cover included.
• All HD suspension brackets are CNC laser-cut and professionally welded and installed, including a multiple-position track-bar bracket for long-travel suspension tuning.
• Axle includes your choice of available selectable lockers and 4.88, 5.13 or 5.38 gear sets.

NOTE: The new ram assist/steering stabilizer bracket for the ProRock44 is not compatible with Reid Racing knuckles.

The Hard Core ProRock 60/60 Axle Set™ is ideal for Jeep Wrangler JK owners who need reliable drivetrain durability after upgrading to large tires, up to 40 inches diameter.

You can’t buy a lower priced, stronger, better quality nor more dependable U.S.-made bolt-in JK axle solution than the Dynatrac Hard Core Axle-Set™, which also has better braking and more ground clearance than its competitors.

The Hard Core ProRock 60/60 Axle Set™ is ideal for Jeep Wrangler JK owners who need reliable drivetrain durability after upgrading to large tires, up to 40 inches in diameter. If you're considering a pair of Ultimate Dana 60 axles (also called UD60), you owe it to yourself to look closely at our Hard Core 60/60 Axle Set™!

What You Get:

ProRock 60® Front Axle

• Dynatrac exclusive patented ProRock® nodular-iron, high-pinion ProRock 60 centersection.
• Best-in-class ground clearance and more ground clearance than a factory Dana 44.
• 3.12 x .50-inch-thick wall tubing that is over 3 times stronger than any stock JK Dana 44 housing.
• Dynatrac U.S.-made forged, double heat-treated 1480 35-spline, 1-ton axleshaft assemblies. Comes with our latest inner and outer 4340 shafts with new 1480 U-joints installed.
• Dynatrac HD BallJoints™ already installed; the last balljoints you’ll ever need.
• Dynatrac exclusive Pro 60™ HD wheel ends with our exclusive Stub Hub™, with fixed-spindle and serviceable wheel bearings. A major improvement over the factory unitized wheel bearings assemblies.
• Includes Dynatrac high capacity 13.25-inch brake upgrade with new dual-piston front calipers and vented rotors.
• Includes our latest integrated track bar and ram-assist steering mounting package. Dynatrac now offers the best high-strength steering linkage and integrated ram-assist package in the industry.
• Includes new Dynatrac HD tie rod, 4140 heat-treated steering arm, new Dynatrac DHD™ drag-link sleeve, control arm bushings and CNC laser-cut HD suspension brackets, all professionally welded and installed.
• ProRock housing geometry set up for superior handling with optimal pinion and driveshaft angle for lifted JKs.
• Rock-proof nodular-iron Dynatrac diff cover included.
• Includes Warn premium locking hubs.
• Axle includes your choice of available selectable lockers and 4.88, 5.13 or 5.38 gear sets.

Pro 60™ Full-Float Rear Axle

• Dynatrac Pro 60™ nodular-iron, standard-cut, high-rigidity housing promotes ring-and-pinion gear durability for bigger JK builds.
• 3.5 x .50-inch-thick wall tubing that is 3.5 times stronger than any stock JK Dana 44 rear housing.
• Dynatrac full-floating wheel ends with 1-ton heat-treated fixed spindles, 1-ton wheel bearings and Dynatrac-exclusive 10-bolt flanged floater wheel hubs.
• Equipped with Dynatrac U.S.-made forged, heat-treated, 35-spline, full-floating 4140 alloy-steel shafts.
• Includes Dynatrac 14-inch brake upgrade with single-piston calipers.
• Includes Dynatrac HD mechanical parking brake with adapters for stock JK parking-brake cable attachment.
• Rock-proof nodular-iron Dynatrac diff cover included.
• All HD suspension brackets are CNC laser-cut and professionally welded and installed, including a multiple-position track-bar bracket for long-travel suspension tuning.
• Axle includes your choice of available selectable lockers and 4.88, 5.13 or 5.38 gear sets.

NOTE: Both front and rear axles are 68.5 inches wide and have 8 on 6.5 wheel bolt pattern.

Wheel More, Worry Less™ with the Strongest 60-Class Axles!

The Hard Core Plus ProRock XD60/XD60 Axle Set™ is for Jeep Wrangler JK owners who want more than just “one-ton” axles. This axle set delivers Dynatrac ProRock XD60® technology front and rear. Unbeatable durability with more axle rigidity to better hold proper gear mesh under extreme loads. The exclusive Dynatrac 1550LT® wheel ends provide tighter turning, less locker bind when turning, reduced steering effort and less wear-and-tear on steering components. And both axles offer best-in-class ground clearance.

What You Get:

ProRock XD60® Front Axle

• Dynatrac exclusive patented ProRock® nodular-iron, high-pinion ProRock XD60® centersection with bearing bores to handle oversize pinion and carrier bearings for elite housing rigidity.
• More ground clearance than any other axle housing in its class.
• 3.75-inch diameter, variable wall thickness, lightweight, chromoly tubing has the highest strength-to-weight ratio compared to any other light-truck axle on the market.
• Dynatrac exclusive Dual-Sump High Volume™ (DSHV) oiling system to ensure the outer pinion bearing is never without lubrication.
• Dynatrac-exclusive U.S.-made forged, double-heat-treated 1550 35-spline axleshaft assemblies. These are the best shafts in the industry and are capable of up to 50-degree turning angles.
• New 1550 LT® high-strength, lightweight, military-grade, aluminum knuckles are loaded with our best set of Dynatrac HD BallJoints™ yet. These are the last balljoints you’ll ever need, and are designed with larger stems and bodies for long life and high durability with big tires.
• Forged 4140, heat-treated, fixed spindles and serviceable wheel bearings support tires up to 44 inches.
• No other 4x4 front axle offers the ease of steering, lowscrub radius, effective Ackermann angle and high steering linkage positioning.
• Includes Dynatrac high capacity 13.25-inch brake upgrade with new dual-piston front calipers and vented rotors.
• Includes our latest integrated track bar and ram-assist steering mounting package.
• Includes new HD tie rod, integral steering arm, new Dynatrac DHD™ drag-link sleeve, control arm bushings, CNC laser-cut HD suspension brackets, all professionally welded and installed.
• Includes DynaLoc™ locking hubs. DynaLoc hubs are over 3 times stronger than all other locking hubs on the market.
• Comes with an ARB Air Locker and your choice of 4.88, 5,13 or 5.38 gears.

NOTE: Comes with 35-spline shafts, hubs, locker.

ProRock XD60® Standard-Cut Full-Float Rear Axle

• The strongest 60-series rear axle available – PERIOD!
• Exclusive XD60 rear housing with ProRock ground clearance.
• Low-pinion, standard-cut gearing for ideal rear-axle application.
• Increased pumpkin rigidity – better stability in gear mesh for higher durability under extreme loads.
• Better strength, better gear stability.
• High-capacity carrier-bearing saddle structure.
• 7/16-inch cover bolts – cover now adds additional structure to the housing.
• O-ring cover seal and hard contact mating surfaces.
• Best ground clearance – No ribs underneath.
• Industry leading 4-inch axle tubes.
• Best strength-to-weight ratio.
• Comes with an ARB Air Locker and your choice of 4.88, 5,13 or 5.38 gears.

The Dynatrac Elite ProRock XD60/80 Axle-Set™ stands alone among all other 4x4 drivetrain options. It is the very best 4WD drivetrain technology that money can buy. You simply cannot find a stronger axle solution than the ProRock Elite Axle-Set™. The U.S.-made bolt-in unit is lightweight and has higher ground clearance than its competitors.

The ProRock XD60/80 Axle Set™ is for Jeep Wrangler JK owners who will not settle for anything less than the very best drivetrain durability, quality and extreme performance for running tires in diameters from 37- to 44-inches. If you are a highly experienced and skilled off-road driver who regularly engages in very technical off-roading with their friends and family, you enjoy taking on the hardest trails and the most difficult and challenging obstacles, this is the Axle Set for you.

The ProRock XD60/80 Axle Set is designed specifically for large JK builds with very large tires, high-performance engine swaps, superchargers, high-torque diesel engine swaps, deep gear reduction and transfer case ratios numerically higher than 4:1.

What You Get:

ProRock XD60® Front Axle

• Dynatrac exclusive patented ProRock® nodular-iron, high-pinion ProRock XD60® centersection with bearing bores to handle oversize pinion and carrier bearings for elite housing rigidity.
• More ground clearance than any other axle housing in its class.
• 3.75-inch diameter, variable wall thickness, lightweight, chromoly tubing has the highest strength-to-weight ratio compared to any other light-truck axle on the market.
• Dynatrac exclusive Dual-Sump High Volume™ (DSHV) oiling system to ensure the outer pinion bearing is never without lubrication.
• Dynatrac-exclusive U.S.-made forged, double-heat-treated 1550 35-spline axleshaft assemblies. These are the best shafts in the industry and are capable of up to 50-degree turning angles.
• New 1550 LT® high-strength, lightweight, military-grade, aluminum knuckles are loaded with our best set of Dynatrac HD BallJoints™ yet. These are the last balljoints you’ll ever need, and are designed with larger stems and bodies for long life and high durability with big tires.
• Forged 4140, heat-treated, fixed spindles and serviceable wheel bearings support tires up to 44 inches.
• No other 4x4 front axle offers the ease of steering, lowscrub radius, effective Ackermann angle and high steering linkage positioning.
• Includes Dynatrac high capacity 13.25-inch brake upgrade with new dual-piston front calipers and vented rotors.
• Includes our latest integrated track bar and ram-assist steering mounting package.
• Includes new HD tie rod, integral steering arm, new Dynatrac DHD™ drag-link sleeve, control arm bushings, CNC laser-cut HD suspension brackets, all professionally welded and installed.
• Includes DynaLoc™ locking hubs. DynaLoc hubs are over 3 times stronger than all other locking hubs on the market.
• Comes with an ARB Air Locker and 5.38 gears.

NOTE: Comes with 35-spline shafts, hubs, locker.

ProRock 80™ Full-Float Rear Axle

• Dynatrac ProRock 80™ nodular-iron, standard-cut, high-rigidity housing promotes ring-and-pinion gear durability for the biggest JK and 4x4 builds.
• Dynatrac patented best-in-class ProRock® ground clearance. The ProRock 80™ has better ground clearance than any other axle housing made for 10.25-inch-and-larger ring-gear diameters.
• Industry-leading 4-inch-diameter, variable wall thickness, lightweight, chromoly tubing that has the highest strength-to-weight ratio when compared to any other light-truck axle on the market.
• Dynatrac 40-spline, full-floating wheel ends with heat-treated 4140 fixed spindles, high-capacity wheel bearings and Dynatrac’s exclusive 12-bolt flanged floater wheel hubs with O-ring seals.
• All ProRock 80s are equipped with Dynatrac U.S.-made forged, heat-treated, 40-spline, full-floating 4340 alloy-steel shafts.
• Includes Dynatrac 13.88-inch brake upgrade with single-piston calipers and 8-on-6.5 wheel bolt pattern.
• Includes HD mechanical parking brake with adapters for stock JK parking-brake cable attachment.
• Rock-proof nodular-iron Dynatrac diff cover included.
• All HD suspension brackets are CNC laser-cut and professionally welded and installed, including a multiple-position track-bar bracket for long-travel suspension tuning.
• Comes with an ARB Air Locker and 5.38 gears.

The Dynatrac ProRock44/60 Hybrid™ offers all of the advantages of the ProRock 44™ plus the advantage of Dynatrac Pro60® axleshafts, knuckles, fixed spindles, 1480 steering joints and hubs. This provides the unbeatable ground clearance of a Dynatrac ProRock 44 and the axleshaft and outer-end strength of a ProRock 60! Add the strength of a Dynatrac Pro 60 at the ends of an ultra-high ground clearance ProRock 44. Dynatrac JK axles include exclusively designed ABS and stability control sensor mounts to maintain all factory function of these systems.

ProRock 44/60 axles are available with either Warn or optional Dynatrac DynaLoc™ locking hubs. When you use the Dynaloc locking hubs with our exclusive Stub Hub kit, the overall package is 4.75-inches narrower. That means that the hubs tuck into the wheels better with 2.388-inches per side.

Check out these standard features:

• The most ground clearance of any 44-based axle.
• 35-spline, 1 ½-inch induction-hardened axleshafts with 1480 steering joints.
• Patented ProRock44™ design.
• Dynatrac Pro Series 60 heavy duty ends package (Larger knuckle, shaft, spindle, brakes, and internal hub).
• ABS retrofit wheel ends.
• Rock-proof nodular-iron Dynatrac™ diff cover included.
• Alloy-steel end forgings with Dynatrac HD BallJoints™ installed in front axle assemblies.
• Available in standard and custom widths, caster and pinion angles.
• Made in the USA.
• Exclusive Dynatrac 1-year no-fault, unlimited-mileage warranty.
• 8.8-inch ring gear diameter.
• Choice of ring and pinion ratio.
• ARB locking differential.
• Input yoke - 1310 (U-bolt style).
• Dynatrac JK heavy duty coil spring suspension bracket set (Includes heavy duty brackets and installation.)
• Upgraded disc brake assemblies.
• Wheel bolt pattern - 5x5.5, 6x5.5 or 8x6.5 available.
• Warn Premium heavy duty 35-spline manual locking hub assemblies.

Dynatrac™ introduces the next step in its revolutionary, patented ProRock™ series of off-road axles with the all-new ProRock XD60™. The Dynatrac engineering team went back to the drawing board to find ways to increase the strength and durability beyond the patented ProRock 60® which is already the industry standard for upgrades beyond the Dana 60.

The all-new ProRock XD60 axle is now available in both front and rear applications for the 2007 to current Jeep Wrangler (JK).

The new Dynatrac ProRock XD60 starts with a center section cast from high-strength nodular iron. The patented design provides the best ground clearance in the industry. The axle was designed to hold a larger differential and 10.1-inch ring gear, providing a 16 percent strength increase over 9.75-inch Dana 60 gears. Using CAD/FEA and advanced engineering tools, Dynatrac designed the new center section for increased rigidity, increasing the stability of critical tolerances during high stress for better durability. It is also available with larger carrier and pinion bearings for even more strength. The internal Dynatrac Dual Sump High Volume (DSHV) lubrication system provides optimal oiling. All of these improvements were achieved while also making the center section 15 percent lighter. The ProRock XD60 also has optimal cast-in features for air locker and electric locker connections..

In addition to these engineering advancements in the center section and wheel ends, the Dynatrac XD60 also features an all-new differential cover designed to withstand brutal beatings in demanding off-road and racing conditions. The lower bolt heads are deeply embedded in the cover for skid protection, and the fasteners are the largest in the industry: 7/16 inch compared to conventional 3/8 inch. The rock ribs have been placed for optimal protection..

The Dynatrac ProRock XD60 is designed for 3 3/4-inch outside-diameter axle tubes with either 1/4-inch or 5/16-inch wall thickness. The 1/4-inch-thick axle tubes are 22 percent stronger than a 3 1/8-inch-diameter tube with 5/16-inch wall thickness, and they weigh the same. The 5/16-inch-thick tubes are 12 percent stronger and 18 percent lighter than 3 1/8-inch-diameter tubes with 1/2-inch wall thickness. The Dynatrac ProRock XD60 accepts a full range of differentials, including air lockers, electric lockers and limited slips. Gear ratios are available from 3.54:1 to 5.38:1..

The ProRock 60 Builder’s Kit for Tacomas includes a high-pinion ProRock 60 housing, high-strength 35-spline axleshafts and Pro Series™ differential cover. This new axle includes the vital components and features that have made the ProRock 60 an icon in the industry:

• Nodular iron center section engineered, cast and machined in the U.S.
• Patented ProRock™ design that provides best-in-class ground clearance.
• Proprietary oiling system.
• Nodular iron diff cover with strategically-located rock ribs.

The ProRock 60 Builder’s Kit is a significant improvement in rear-axle strength for Tacomas. It uses a 9.75-inch ring gear, compared to the stock 8.0-inch ring gear that comes in these trucks. The Dynatrac axleshafts are 35-spline, compared to the stock 30-spline shafts, and the Dynatrac shafts feature a unique heat-treat process for additional strength. The ProRock center section has Dynatrac legendary strength engineered into it, and the axle tubes have 0.3125-inch wall thickness, compared to 0.200-inch from the factory. The customer re-uses the brakes and ABS sensors, and he can either can supply the differential and ring-and-pinion gear of his choice to complete the axle assembly or order them separately from Dynatrac.

The Dynatrac ProRock 44™ front axle offers incredible strength and unmatched ground clearance in a small package. The ProRock 44 is full of uncompromised standard features like huge 3-inch-diameter, thick-wall axle tubes, unique US-made heavy-duty Pro44™ end forgings, thicker suspension brackets than stock and more.

ProRock 44 assemblies are available as direct replacements for Dana 30 and Dana 44 front axles in the Jeep JK, TJ and XJ.

Every Dynatrac ProRock 44 features:

• The most ground clearance of any 44-based axle.
• Patented ProRock44™ design.
• Rock-proof nodular-iron Dynatrac™ diff cover included.
• The strongest end forgings, made by Dynatrac™ in the USA.
• Available in standard and custom widths, caster and pinion angles.
• Made in the USA.
• Exclusive Dynatrac 1-year no-fault, unlimited-mileage warranty.

The Dynatrac Trail Series 60™ provides more bolt-in beef for your Jeep JK without breaking the bank. The Trail Series 60 features big 1 1/2-inch, 35-spline, 1-ton semi-float axleshafts stuffed inside of 3 1/8-inch diameter, 5/16-wall axle tubes. This rear axle features the same made-in-USA Dynatrac™ quality, materials and craftsmanship, but by offering the Dynatrac Trail Series 60 in just a few configurations, we can build more of them and keep the costs down. Then we pass the savings on to you!

• 100% new components.
• Fully assembled and ready to bolt-in.
• Thick nodular-iron Dynatrac™ diff cover included.
• Thicker suspension brackets than stock.
• High-pinion rear axle.
• Affordable legendary Dynatrac™ quality.
• Made in the USA.
• Exclusive Dynatrac 1-year no-fault, unlimited-mileage warranty.

Standard Equipment:

• Complete, custom, Model 60 semi-float, rear axle assembly with 12 month limited warranty.
• Custom machined, Pro-Series, reverse-cut, heavy-duty, nodular iron housing.
• Dual-sump / High-Volume™, High-pinion Angle Oil Mod (18 degree max pinion angle).
• Heavy Duty 3-1/8” x 5/16” wall DOM housing tube assemblies.
• Stock track width (Jeep JK = 65.5") and offset.
• Stock pinion angle.
• 35-spline, 1-1/2 ” diameter, 1-ton, heavy-duty, semi-float axle-shaft assemblies.
• 9-3/4” Ring Gear Diameter.
• Choice of ring and pinion ratio.
• Open differential.
• Steel heavy-duty differential cover.
• Input yoke-1310 (U-bolt style).
• Brake tabs welded in place.
• Wheel bolt pattern- 5x5”, 5x5-1/2”.
• Billet steel housing ends.
• Large tapered roller axle bearings.
• Clean tubes.
• Heavy-duty steel axle retainers.
• Customer to reuse stock JK disc brake assemblies.

Optional Equipment:

• Braided Stainless-Steel Brake Hose Kit.
• ARB Air Compressor Kit.
• Pro-Series Differential Cover.
• 3-Link Suspension Mount (bridge).
• Alternate Width (68.5”).
• Axle Installation (labor).
• 1350 Pinion Yoke (U-bolt style).
• Jeep JK Backing Plate and Parking Brake Assembly (Jeep JK only, customer still to reuse stock rotors & calipers).
• Complete Jeep JK Disc Brake Assembly (Jeep JK only).
• ProRock 60® High Clearance Housing.
• ARB Air-Locker.
• Detroit SofLocker Differential.

The Dynatrac ProRock 60® was the first of its kind when it was unveiled in 2002. Today, it’s an off-road performance standard to which all other Dana 60 based axles are compared.

And now, you can have a ProRock 60 front and rear axle for your 2006-2017 Jeep JK at the lowest price ever offered! Front and rear ProRock 60 packages for the Jeep JK that come complete with ARB Air Lockers and 5.38:1 gears, ready to bolt in.

Custom ProRock 60 axles can be built for the Jeep TJ, XJ, CJ, WJ and just about any other type of 4x4. They are available in standard and custom applications with 35- and optional 40-spline shafts. The nodular-iron ProRock 60 housing combined with the 9¾-inch high-pinion gearset supplies “1-ton” strength and durability as well as improved driveshaft angles and driveshaft ground clearance, especially on short wheelbase 4x4s and front-axle applications. Dynatrac ProRock 60 front axles include massive steering joints, end forgings and wheel ends to provide the ultimate confidence. Dynatrac JK axles include exclusively designed ABS and stability control sensor mounts to maintain all factory function of these systems.

ProRock 60 axles are available with either Warn or optional Dynatrac DynaLoc™ locking hubs. When you use the DynaLoc locking hubs with our exclusive Stub Hub kit, the overall package is 4.75-inches narrower. That means that the hubs tuck into the wheels better with 2.388-inches per side.

Standard Features:

• 100% designed, manufactured and assembled in the USA.
• Most ground clearance of any housing that uses an 8.5” diameter or larger ring gear.
• More ground clearance than a Dana 44.
• Unmatched housing rigidity to keep gears in proper mesh under extreme loads and big tires.
• Best pinion angle and wheel alignment for most lifts.
• Proprietary, in-house developed forgings, housings, spindles, knuckles, etc.
• CAD designed and CNC cut brackets expertly welded for precise fit every time.
• The ProRock 60® platform that is still the benchmark for all other Hi-Pinion Dana 60.
• ABS sensors at the wheel ends for ESP and ABS compatibility for most vehicles.
• Quality installed components from Timken, Warn, ARB, Auburn Gear, Ox Locker and Eaton.
• 1-Year, unlimited mileage, “no fault”, written warranty – Real warranty not empty promises.

Standard Front-Axle Equipment:

• Complete Custom Dynatrac ProRock 60® front axle assembly with 12 month limited warranty.
• Custom machined Dynatrac ProRock 60® high-pinion (reverse-cut) heavy duty nodular iron housing and nodular diff cover.
• Any axle width or offset (68.5” minimum).
• Heavy Duty 3-1/8” x 1/2” wall DOM housing tube assemblies.
• Matched housing geometry, pinion angle, and wheel alignment for vehicle’s suspension.
• 35 spline, 1½” diameter heavy duty front inner axle shaft assemblies with 1480 Spicer axle joints (Uses 30 spline alloy outer axle shafts).
• 9¾” Ring gear diameter.
• Choice of ring and pinion ratio.
• Heavy duty open differential.
• Steel heavy duty differential cover.
• Input yoke - 1310 (U-bolt style).
• Dynatrac JK heavy duty coil spring suspension bracket set (Includes heavy duty brackets and installation).
• Upgraded disc brake assemblies.
• Wheel bolt pattern - 5x5.5”, 6x5.5” or 8x6.5”.
• Warn Premium heavy-duty manual locking hub assemblies.
• Dynatrac Pro Series 60 heavy duty ends package (Larger knuckle, shaft, spindle, brakes, and internal hub).

Optional Front-Axle Equipment:

• Eaton Truetrac heavy duty limited-slip differential.
• Eaton Detroit SofLocker differential (Not recommended for ESP equipped JK's).
• Eaton E-Locker differentia.
• ARB Air Locker differentia.l
• OX Locker differential.
• Auburn Gear Differential.
• ARB air compressor kit.
• 35 spline, 1½”diameter alloy outer axle shaft assemblies w/Warn Premium 35 spline locking hubs upgrade.
• Competition 4340 Chromoly 35 spline axle shaft upgrade (Includes 4340 inners & outers + 2 CTM joints).
• Pro-Max Competition 40 spline axle shaft upgrade (Includes 4340 chromoly inners & outers + 2 CTM joints) – Note: Drive flanges only w/40 spline outer shaft.
• Dynatrac Dual Sump/High Volume™High-Pinion Seal (Recommended when pinion angle exceeds 12°).
• 5x5.5” Dual Piston 13.25” Vented Rotor “Big Disc” Brake upgrade - *Min. 17” wheel required.
• 5x5.5” Wilwood 6 Piston 14” Rotor Disc Brake Pkg. - *Min. 17” wheel required.
• 8x6.5” Dual Piston, 13.10” Vented Rotor “Big Disc” Brake Upgrade - *Min. 16” wheel required.
• 8x6.5” Dual Piston, 14.50” Vented Rotor “Big Disc” Brake Upgrade - *Min. 17” wheel required.
• 1350 or 1410 Yoke (U-bolt style).
• Braided stainless steel brake hose kit (To be sent after axle is installed due to length requirement).
• Reid Racing King Pin End-Forging & Knuckle Substitute Assy. - 5, 6 and 8 lug.
• Dynatrac 30 or 35 spline full-time 4WD drive gears.
• Dynatrac DynaLoc™ Heavy Duty Manual Locking Hubs - Upgrade.
• Dynatrac Stub-Hub Upgrade.
• NEW! – Dynatrac Heavy Duty Ball Joint Upgrade (Uppers & Lowers).
• Dynatrac Heavy Duty Cross-Over Steering Assembly (Tie Rod & RH Steering Arm – Drag Link optional).
• Powder coat finish (Color TBD by customer).
• Axle installation (Estimated Labor).

Standard Rear-Axle Equipment:

• Complete custom Dynatrac ProRock 60® semi-float rear axle assembly with 12 month limited warranty.
• Custom machined Dynatrac ProRock 60® High Pinion (reverse-cut) heavy duty nodular iron housing and nodular diff cover.
• Dynatrac Dual Sump/ High Volume™ High-Pinion Angle Oil Modification.
• Heavy Duty 3-1/8” x 5/16” wall DOM housing tube assemblies.
• Any track width or offset (65.5” minimum).
• Matched housing geometry and pinion angle for vehicle’s suspension.
• 35 spline, 1½” Diameter, heavy duty semi-float axle shaft assemblies.
• 9¾” Ring Gear Diameter.
• Choice of ring and pinion ratio.
• Trac-Lok standard duty limited-slip differential.
• Steel heavy duty differential cover.
• Input yoke - 1310 (U-bolt style).
• Dynatrac Jeep JK coil spring bracket set (Includes heavy duty 3/16” brackets and mounting).
• Wheel bolt pattern - 5x5” or 5x5½” (8x6.5” available w/Full Float Upgrade).
• Billet steel housing ends.
• Large tapered roller axle bearings.
• Heavy duty steel axle retainers.
• ABS/Traction Control retrofit.
• Customer to use factory disc brakes.
• Axle is finely detailed and painted Dynatrac’s signature gloss black.

Optional Rear-Axle Equipment:

• Standard-Cut Heavy Duty Nodular Iron Housing.
• Eaton Detroit SofLocker differential (Not recommended for ESP equipped JK's).
• Eaton E-Locker differential.
• ARB Air Locker differential.
• OX Locker differentia.l
• Auburn Gear Differential.
• High Output ARB air compressor kit.
• Pro-Max 40 spline semi-float axle shaft upgrade with large bearing.
• Competition 4340 chromoly 35 spline semi-float axle shaft upgrade.
• 1350 Yoke (U-bolt style).
• 1410 Yoke (Strap style).
• Complete Stock JK 12.5” Disc Brake Assemblies, Installed.
• JK Backing Plate/Parking Brake Assembly Installed (Customer still to reuse stock rotor & caliper).
• Re-drill customer supplied rear disc brake rotors to 5x5.5”.
• Dynatrac Custom Housing Bridge – 3-Link.
• Dynatrac 5x5.5” Full Float Axle Upgrade Pkg w/13.9” Vented Rotor Disc Brake Assemblies - (17” Rim Required).
• Dynatrac 5x5.5” Stub Hub Full Float Pkg. Upgrade.
• Dynatrac 8x6.5” 7500 GAWR Full Float Axle Upgrade Pkg w/13.9” Vented Rotor Disc Brake Assemblies - (17” Rim Required) ---- Upgrade to Severe Duty 10,000 GAWR Pkg.
• Dynatrac Severe-Duty Full Float Spindle Upgrade (Full Float Upgrade Required, Included w/10K Pkg).
• Competition 4340 chromoly 35 spline full-float axle shafts w/Dynatrac Full Time 4WD Gears upgrade - (Full float upgrade required).
• Pro-Series Nodular Iron Differential Cover.
• Powder coat finish (Color TBD by customer).
• Axle installation (Estimated Labor).
• GL-5 gear oil, installed (Full float, complete semi-float disc brake or backing plate/parking brake assembly required).

The Dynatrac ProRock 80™ is the ultimate rear axle upgrade. Big tires? Big power? No problem! No other axle in existence handles this much torque, has this much ground clearance and is this lightweight. Do your worst. The massive 11.25-inch ring gear, giant 2-inch diameter pinion and 40-spline 4340 axleshafts give the ProRock 80 the ability to handle huge tires, a massive rig and a heavy right foot.

The lightest axle in its class, the ProRock80 has all the beef you’ll need in your JK to handle the largest tires with the hottest motor. Designed to handle just about anything you can throw at it, the ProRock80 has the strength to get you there and back. The ProRock80 is based off of the massive Dana 80. We took the best features of the Dana 80, added in the best features of our ProRock design and ended up with an axle that can handle the toughest terrain.

No other axle in existence can handle this much torque, have this much ground clearance, and be this lightweight.....PERIOD!

Features and Standard Equipment:

• 100% designed, manufactured and assembled in the USA.
• Lightest axle assembly in its class.
• Full floating axle design eliminates weight load on axle shafts.
• Unmatched housing rigidity to keep gears in proper mesh.
• 11.25" ring gear and 40 spline axle shafts can handle heavy weight, big horsepower and an aggressive driver.
• Sleek ProRock® housing keeps you sliding over the obstacles, not grinding to a halt.
• Most ground clearance of any axle using a 10.5" gear or larger.
• Integrated upper suspension mounting points.
• Proprietary, in-house developed forgings, housings, spindles, etc.
• CAD designed CNC cut brackets expertly welded for precise fit every time.
• Exclusive Dynatrac JK ABS and Stability Control compatibility.
• 1 year, unlimited mileage, "No-Fault", written warranty- real warranty- not empty promises.
• Exclusive high clearance custom machined Dynatrac ProRock80® standard cut heavy duty nodular iron housing.
• Heavy duty 4" diameter, 1/4" wall lightweight high rigidity Chromoly axle tubes.
• Axle width- 68.5".
• Matched housing geometry and pinion angle for vehicle's suspension.
• Dynatrac Jeep JK heavy duty 3/16" rear coil spring brackets installed.
• Integrated upper mounting points for flexible link suspension.
• ARB Air Locker differential- 40 spline.
• Massive 11.25" ring gear with 37 spline pinion input shaft.
• Choice of USA-made Dana 80 standard-cut ring and pinion ratio 3.54-5.38.
• Dynatrac Dual Sump/High volume/High Pinion Angle Oil Modification (recommended for 11 degrees or more pinion angle).
• 1410 input yoke.
• 8 lug (8 on 6.5") wheel pattern.
• Dynatrac ProRock80 heavy duty full float nodular iron wheel hubs, chromoly heat treated spindles and serviceable bearings.
• Heavy Duty J8 Military 13.9" vented rotor disc brake assemblies.
• Dynatrac JK ABS/ESP retrofit.
• Dynatrac ProMax 40 spline 4340 chromoly full floating axle shafts.

Optional Equipment:

• 3/8" or 1/2" wall axle tubing.
• ARB high output compressor kit (CKMA12).
• 1480 pinion yoke.
• GL-5 gear oil installed.

For the most extreme ground clearance available, the Dynatrac Portal Axle™ is fitted with AxleTech International Motorsports (AIM) portal axle ends. The advantage of this Dynatrac Portal Axle is that the gear reduction at the hub moves the axle centerline up five inches. This is a dramatic change in ground clearance; more ground clearance than switching from 35-inch to 44-inch tires on your vehicle!

So what is the advantage of a portal axle? The gear reduction at the hub moves the axle center line up five inches for increased ground clearance. This is a dramatic change; the equivalent of switching from 35” to 44” tires on your vehicle. Additionally, the geared hub design provides a 1.5:1 gearing reduction through a massive 41 spline axle shaft designed specifically to account for increased torque loads. The nodular iron AIM portal gear boxes contain four 2.25 inch wide 8620 heat treated steel gears: a drive gear, two idler gears, and a gigantic driven gear that keeps the drive direction constant, making them a practical retrofit to traditional axle housings. By multiplying torque at the wheel, less torque is transferred through the driveshafts, transfer case, and other upstream drivetrain components. And a numerically higher gear ratio can also now be used, which results in a larger, stronger pinion gear.

The idea of using portal axles for more ground clearance is not new, however there have been a number of factors that have made them unfeasible… until now. In the past you had to overcome poorly functioning drum brakes, long pinions that result in short driveline lengths, excessive weight, and difficult to source foreign parts when trying to retrofit portal axles to your Jeep or 4x4. Dynatrac has worked closely with AIM and Mopar to address all of these issues (and more) with the introduction of their innovative new portal complete axle assemblies and sub-assembly components.

Realistically these new portal axles aren’t for everyone. They are not recommended for highway use, and the leverage of the portal design places additional stress on suspension mounting points and control arms. Electronic controls such as ESP and ABS cannot be retained with the portal boxes, as they can with Dynatrac’s traditional ProRock, Pro, and Trail Series axles. There is no provision for a standard parking brake; however a driveline brake at the transfer case can easily be added to address this issue. Final suspension design will be determined by many factors and it is crucial that the suspension design address the added torque and leverage of the portal system. The end user will need to design proper steering and a strong 4-link suspension. Therefore, it’s important that a qualified specialist with fabrication skills and a thorough knowledge of suspensions install it. In short, this isn’t a ‘turn-key’ assembly that fits any application. With the caveats out of the way, it becomes clear that if you require the absolute greatest ground clearance, with gear reduction to overcome the most severe, boulder-strewn trails and obstacles, there is no substitute for Dynatrac and Mopar axles equipped with AIM portal housings.

The portal wheel ends are currently available for king pin steering knuckles and full floating rear Dana 60, Dana 70, and AAM 14-Bolt applications. Dynatrac can provide the AIM portal housings on their proprietary ProRock and Pro-series axle assemblies with suspension brackets for a wide variety of vehicle applications.

Dynatrac are still very early in the evolution of portal axle systems. As more of these units are tested we’ll have more information regarding suspension and steering design to pass on to the installers. Company are continuing work with Mopar and AIM on Jeep Wrangler JKs to refine the system to create a more ‘turn-key’ package. Mopar Performance part numbers P5155670 and P5155671 are available from Dynatrac and your local Dodge/Chrysler/Jeep Dealer. They are specifically designed to fit 2007 and newer Wrangler JK vehicle if used for off-road only purposes. Dynatrac is not only a dealer for Mopar parts and accessories, they are also a supplier of new and unique products to Chrysler and Mopar, with their axle assemblies being prominently featured on popular Mopar Underground vehicles such as the Lower 40, NUKIZER M715, The ImMortal, and the 1320 Dodge Challenger.

In addition to making the made-to-order custom axle assemblies that Dynatrac is famous for, AIM portal boxes and related components will also be available individually from Dynatrac for those who wish to retrofit the portal boxes to their existing axles. “People best know Dynatrac for providing high quality, US-made axle solutions,” explained Dynatrac founder Jim McGean. “The evolution of off road vehicles continues and once again, Dynatrac is in the forefront with the help of industry leaders like AIM and Mopar Performance”.

Dynatrac ProRock Portal Axle Features:

• Four gear design – no reverse rotation or flipped differentials required.
• 4.9” lift for greater ground clearance.
• 1.5:1 reduction ratio for increased wheel torque without increased stress on the ring and pinion.
• 1.5 inch diameter/35 spline input shafts.
• 2 inch diameter/41 spline output shafts.
• Heavy duty vented rotor with Wilwood four piston caliper.
• Adds approximately 4 inches of axle width per side, when compared to standard Dana 60 King pin wheel ends. This width can be compensated for when the axle housings are assembled, or with offset wheels when the portal housings are added to existing axles.
• Made in the USA.

Dynatrac Portal Axles are available as bolt-in assemblies for the Jeep Wrangler JK (for off-road use only).

Dynatrac™ introduces the missing link in GM IFS truck drivetrain: the ProRock XD60-GM-IFS™ for the ultimate upgrade in front axle strength and durability. Developed for military applications, the ProRock XD60-GM-IFS provides unmatched strength and durability for 2007 and newer GM 2500 HD 4x4 trucks with Duramax and Allison transmission.

The core of the new Dynatrac ProRock XD60-GM-IFS™ is high-strength nodular iron center section. The ProRock XD60-GM-IFS™ features exclusive larger carrier and pinion bearings for even more strength. It uses a massive 10.1-inch ring gear compared to the factory 9.25-inch gear. Even more significant to durability, though, Dynatrac designed the new center section for world-class rigidity, increasing the stability of critical tolerances during high stress. This nearly eliminates the chance of gear failure caused by axle housing deflection.

The ProRock XD60-GM-IFS™ features optimal cast-in bosses for air locker and electric locker connections, and the mounting points for the housing are an integral part of the casting.

In addition to these engineering advancements in the center section, the Dynatrac ProRock XD60-GM-IFS™ features an all-new structurally-integrated differential cover designed to add strength to the overall housing. The cover is made from nodular iron, attaches with 7/16-inch Grade 9 fasteners and a captured O-ring seal.

The Dynatrac ProRock XD60-GM-IFS comes with 35-spline or 40-spline 4340 inner axleshafts and supports stock, 934 or Series-30 CV flanges. The ProRock XD60-GM-IFS™ accepts a full range of differentials, including air lockers and electric lockers. Gear ratios are available from 3.54:1 to 5.38:1.

• High-Strength Nodular Iron Center Section.
• 10.1-inch Diameter Ring Gear vs Factory 9.25-inch Diameter Ring Gear.
• Center Section Rigidity Drastically Increases Stability of Internal Components.
• Structurally-integrated Differential Cover Designed to Add Strength to the Overall Housing.
• Available with 35-spline or 40-spline 4340 Inner Axles hafts, and Supports Stock 934 or Series-30 CV Flanges.
• Gear ratios are available from 3.54:1 to 5.38:1.
• Features Cast-in Bosses for Air Locker and Electric Locker Connections.
• Nodular Iron Cover Attaches with 7/16-inch Grade 9 Fasteners and a Captured O-Ring Seal.

The Dynatrac Pro 60-IRS™ is the strongest rear axle you can buy for your 2005-2014 Dodge Challenger, Charger, Magnum and Chrysler 300 (LX series of cars). We engineered this IRS axle to eliminate issues with rear axle performance and durability. It will handle just about any level of power and the abuse and stress of drag racing, road racing and just plain everyday driving. In addition to strength and durability, the Dynatrac Pro 60-IRS with more than a dozen gear ratios; from 3:54:1 all the way up to 7:17:1! If you’ve made upgrades under the hood, you’ll want to upgrade your rear too. You can do it before you break the stock unit or wait. Either way, we’ll be ready to build your Pro60-IRS!

Available exclusively from Mopar Performance - Jeep Wrangler military-grade front and rear axle assemblies for Jeep Wranglers. These tough, genuine Jeep assemblies are designed for the military Wrangler J8 and provide the next level of off-road performance for Wranglers. They come fully assembled and well equipped with 4.10 gears, JK wheel speed sensors, and massive, heavy-duty disc brake calipers and rotors. The high-pinion Dana 44 front axle is ready a bolt-in for the 2007 & newer Wrangler. The Dana 60 rear axle is configured for leafspring mounts. Adaptation of the rear axle to fit the suspension of any Jeep vehicle is the responsibility of the purchaser. Made-in-USA.

Mopar Performance Jeep Wrangler Rubicon front and rear Dana 44 axle assemblies provide the next level of off-road performance for your Jeep JK. These axles are shipped with the current Jeep Wrangler Rubicon factory suspension mounting brackets installed. They are completely assembled, with a 4.10 gear, disc brakes, and locking differential with locking sensor.

The new Mopar Dana 60™ axles are bolt-in replacement upgrades for front and rear axles on the Jeep Wrangler JK. Some of the improvements in these Dana axles are are 35-spline chromoly axleshafts, Spicer® ring and pinion gear, selectable electric lockers, SPL® 70 U-joints and full-float design. These axles have an 8 x 6.5-inch wheel bolt pattern, heavy-duty brakes with plug-and-play ABS. Axles are available with 4.88:1 or 5.38:1 gear ratios.