Fleece Performance Engineering Semi-Truck Performance Chips
- Fleece Performance Engineering®TapShifter (FPE-TAPSHIFTER-KDTK)TapShifter by Fleece Performance Engineering®. The Fleece Performance TapShifter allows you to shift your Allison Transmission with the touch of a button just like the 2006 and newer trucks. Perfect for towing, drag racing, daily...Easy Plug & Play InstallationLimits Up-Shifts$387.38