GFBV D560-0001 Dinan Underdrive Crankshaft Pulley Kit - BMW M5/M6 - Fits 2006-2010 BMW M5, M6

13 Percent Underdrive - Billet Aluminum - E60/E63/E64

Dinan'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.; The kit includes all of the necessary mounting hardware, lightweight pulley, and shorter belts. This product is backed by our industry-leading 4 year/50,000 mile warranty so you can rest assured that you are purchasing the best quality product for your BMW.

Features and Benefits: All accessories are underdriven by 13% to decrease drag on the engine.; Includes mounting hardware and shorter belts.; Lightweight billet aluminum crankshaft pulley, black anodized and engraved.

DIN ECP