Benefits:
- Pull ahead of the competition by freeing up some extra power on your M5/M6.
Features:
- Underdrives Each Of The Accessories By 13 Percent
- Retains The Factory Harmonic Crankshaft Damper
- Eliminates Vibration That Might Otherwise Damage The Crankshaft
- Includes Lightweight Pulley
Applications:
- 2006 - 2010 BMW E60 M5
- 2006 - 2010 BMW E63/E64 M6
Application Notes:
Description:
Dinan lightweight billet aluminum crankshaft pulley underdrives each of the accessories by 13%, reducing parasitic drag on the engine for a 6 horsepower and 4 lbs.-ft. torque gain. The Dinan underdrive pulley retains the factory harmonic crankshaft damper, eliminating vibration that might otherwise damage the crankshaft. The kit includes all of the necessary mounting hardware, lightweight pulley and shorter belts.