ATI Performance 917010 Shell Assembly 7.074 in. Steel SBC 3-Ring Internal Balance

Shell Super Damper Harmonic Balancer - Internal Balance, For Chevy Small Block

ATI Super Damper harmonic balancer shells are specifically designed for high-rpm engines. Their proven elastomer is designed and tuned to eliminate harmful crankshaft harmonics that cause parasitic horsepower loss. These damper shells are engineered to all but eliminate worn parts and timing problems. These are the shells only and must be used with an ATI hub, which is sold separately.