ATI Performance Products ATI916159 Supercharger Pulley 9.77" 10-Rib Steel

The ATI Performance Products 916159 is a high-performance serpentine supercharger pulley designed to increase boost and power output in supercharged GM applications. This precision-engineered pulley features a 9.770-inch outer diameter with 10 grooves, constructed from heat-treated steel for maximum durability under extreme operating conditions.

Key Features:

• 9.770-inch outer diameter for increased supercharger speed
• 10-rib serpentine design for positive belt engagement
• Heat-treated steel construction for strength and longevity
• 24-25% overdrive for LSA 6.2L supercharged engines
• 21.5% overdrive for LT4 supercharged engines
• Designed to work with ATI918854 Super Damper
• Direct replacement for factory supercharger pulley

This pulley spins the supercharger faster than the stock unit, creating additional boost pressure and horsepower gains. The smaller diameter overdrive design is ideal for street performance builds, track applications, and high-boost setups. ATI's precision manufacturing ensures proper belt alignment and smooth operation, making this an excellent upgrade for enthusiasts seeking more power from their supercharged GM engine.