Whipple 3.750 10-Rib SCP / Black SCP-103750-5

The Whipple 3.750" 10-Rib 5-Bolt Supercharger Pulley is a precision-engineered component designed for Whipple supercharger applications. It features a 3.750-inch running diameter and a 10-rib, 5-bolt design for dependable belt control. Constructed from 6061-T6 billet aluminum with a durable black anodized finish, this pulley is built for longevity and resistance to wear and environmental factors.

This pulley is a proven method for adjusting supercharger speed, which can influence boost levels and overall power output when properly matched with other components. Pulley changes can significantly impact performance, with a general guideline suggesting that every .125-inch change in diameter can affect boost by approximately 1 psi, though actual results vary.