ATI SR20 FWD Street Damper

Does not fit when using a 54C oil pump

– 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 (dyno tested for each application).