Every Whipple Supercharger pulley is made of 6061-T6 billet aluminum and anodized for wear and environmental protection. Each pulley is engraved with the running diameter size and state-of-the-art light weight pockets to lower reciprocating mass 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.
Note: A general rule of thumb is every .125" of pulley change is 1psi of boost. There are no returns or exchanges for used pulleys.
These pulleys are for Whipple 4.5L LSX Superchargers only. (275ax)
Whipple 4.5L LSX Supercharger. (275ax)