ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black Oxide - Internal Balance - Small Block Ford 918920 Floor Jack Handle 568" outer diameter springs

568" outer diameter springs

High Strength Aluminum Alloy ComponentsVehicle Applications: 2021-2023 Ford F-150

1985-1985 Chevrolet K20 Suburban

1988-1991 Pontiac Grand Am

Designed for use on Drag race

ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black Oxide - Internal Balance - Small Block Ford 918920 Floor Jack Handle 568" outer diameter springsThe patented ATI Super Damper is the only damper designed exclusively for high performance engines. Eliminates torsional crankshaft vibrations Exceeds SFI 18. 1 specs Laser engraved 360 timing marks Black zinc chromate finished Inner and outer shells are available in aluminum or steel contain the steel inertia weight. The inertia weight has six (2 ring design) or eight (3 ring design) computer machined grooves to retain the proper durometer O rings