DBA® 42663XS-10 - HD 4000XS Series™ Drilled and Slotted 1-Piece Rear Brake Rotor

Benefits:

• Slots and drilled holes provide dust and water dissipation
• Slots help to increase pad bite and improve air circulation
• Cross-drilled holes provide increased cooling
• Reduce stopping distances in wet weather

If you're looking for stylish looking brake rotors that deliver a crisper level of stopping power on performance-oriented cars or 4x4s, the 4000XS series rotors are packed with most of DBA's performance series features at a mid-range value price that can't be beat. First, more slotted grooves and cross-drilled holes provide even more effective management of heat, dust, and gasses that build up during aggressive driving. You will also find those performance benefits continue in the rain and at racetrack speeds as temperatures get even higher. Because of the evenly spaced slots across the entire rotor surface, any pads will wear more consistently and eliminate "lip" formation along the outside edge of the rotor. If you're installing 4000XS rotors with new pads, the rotors will still be usable with a second set of pads when the first wear out. Stylish gold paint is applied to all non-contact areas to ensure these rotors continue to look good and resist corrosion during their extended lifespans.

For the serious performance driver that's mindful of avoiding high rotor temperatures that cause brake fluid boiling and pedal fade, DBA equips each 4000XS rotor with three paint marks that monitor brake rotor temperature and change color as different points are reached. A green line becomes white at 856 degrees Fahrenheit, an orange line changes to yellow at 1,022 degrees Fahrenheit, and a pink line also changes to white when temperatures exceed 1,166 degrees Fahrenheit. While these brake rotors will reach high temperatures eventually after heavy sustained use, they will take longer than others to reach those temperatures. They'll maintain their cool under most conditions thanks to high-carbon iron construction which resists temperature buildup better initially, and because of vented centers with 144 tear-drop shaped pillars which result in more metal contact and better cooling than traditional fins.

Like all high-performance DBA rotors, 4000XSs are cured during production and heat-treated with a patented Thermal Stability Process - reducing metal stress and preventing iron from weakening internally over many heating and cooling cycles. Combined with lower overall operating temperatures, these rotors are much more resistant to the warping and hotspotting which typically shorten both pad and rotor lifespan. DBA matches or exceeds vehicle manufacturer rotor warranties by ensuring that these brake discs will remain usable and free from defects in materials and workmanship for a period of 1 year or 12,000 miles.