WHIPPLE: 4.000″ 8-Rib Pulley / HEMI

Every Whipple Supercharger pulley is made of 6061-T6 billet aluminum and anodizedfor wear and environmentalprotection. Each pulley is engraved with the running diameter size and state-of-the-art light weight pockets to lower reciprocatingmass as well as a guard feature to help unwanted belt wandering during hard running. Standard finish is hard coated black anodized. Dimension of each supercharger pulley is based off of the running diameter.

* A general rule of thumb is every .125″ of pulley change is 1psi of boost. There are NO returns or exchanges for used pulleys.

** Whipple Supercharger pulleys are specific to the application. Do NOT order this pulley for a different application.

Proposition 65

WARNING:Cancer and Reproductive Harm

https://www.P65Warnings.ca.gov