Dinan Underdrive Pulley Kit | BMW M5 (06-10) (D560-0001)

The Dinan 06-10 BMW M5 Underdrive Pulley Kit is a performance upgrade designed to enhance engine efficiency and power output. Crafted from lightweight billet aluminum, this pulley underdrives each accessory by 13 percent, reducing parasitic drag and improving overall engine responsiveness. By decreasing the load on the crankshaft, it delivers an estimated 6 horsepower and 4 lb-ft of torque gains at 8000 RPM on a stock vehicle. The kit retains the factory harmonic crankshaft damper, ensuring vibration is minimized and crankshaft integrity is maintained, which contributes to the durability and longevity of the engine components.

This underdrive pulley kit is specifically engineered for 2006 to 2010 BMW M5 models. It is a direct bolt-on replacement that does not require additional modifications, making it suitable for both street and track use. The kit includes the lightweight billet aluminum crankshaft pulley and the necessary hardware for installation. Designed for enthusiasts seeking improved performance and reliability, this upgrade is ideal for those looking to optimize their M5’s power delivery without compromising engine stability.