ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black - Internal Balance - Small Block Chevy 917320 20194MLW Our steel retainers are precision

Our steel retainers are precision machined from 4140 chromemoly and finished in black oxide

Also available in a straight bore for street stocks

All are 30" long and available in a variety of rates

Pontiac: All 4-speed transmissions

Buick: Skylark 68 - 71 4

ATI Super Damper SFI 18.1 Harmonic Balancer - 6.325 in OD - Black - Internal Balance - Small Block Chevy 917320 20194MLW Our steel retainers are precisionATI Super Damper has become one of the industry's standards in harmonic vibration control, combining two dampening surfaces in one unit. At 6000 RPM, digital vibration tests proved the ATI Super Damper to be 30% more effective than original equipment style dampers. ATI Super Damper consists of an outer shell, inner shell, crankshaft hub, and eight individual elastomers. Reductions in torsional vibrations provide increased horsepower while improving