ATI Super Damper SFI 18.1 Harmonic Balancer - 7.425 in OD - Black Oxide - External Balance - Big Block Chevy Chassis & Frame Deals Deep and Powerful Sound

Deep and Powerful Sound

double-thick for the larger 12-Series Mechanical Fuel Pump

Direct / Remote Reservoir

1955-1955 GMC 280-22

ATI Super Damper SFI 18.1 Harmonic Balancer - 7.425 in OD - Black Oxide - External Balance - Big Block Chevy Chassis & Frame Deals Deep and Powerful SoundProduct Description: Harmonic Balancer Super Damper 7. 425 in OD SFI 18. 1 Steel Black Oxide External Balance Big Block Chevy Sold Individually ATI Performance Products is a company founded on innovation, precision and service. ATI harmonic Super Dampers add horsepower and torque to race, street and truck engines. ATI Performance Products is the creation of over 40 years of Transmission and performance component manufacturing and racing experience.