Dinan 06-10 BMW M5 Underdrive Pulley Kit M3 Carbon Fiber Fender Trim The item comes unpainted and

The item comes unpainted and professional paint and installation are recommended

check application

Our M5 downpipes will significantly increase horsepower and torque throughout the powerband

Installs effortlessly with pre-applied double-sided tape

Direct replacement for factory shift boot

Dinan 06-10 BMW M5 Underdrive Pulley Kit M3 Carbon Fiber Fender Trim The item comes unpainted andDinan's lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13 percent, reducing parasitic drag on the engine for a 6 HP @ 8000 RPM and 4 lb ft torque @ 8000 RPM gain on a stock vehicle. The Dinan underdrive pulley retains the factory harmonic crankshaft damper, eliminating vibration that might otherwise damage the crankshaft. Lightweight billet aluminum crankshaft pulley, black anodized and engraved. All accessories