The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.
Eliminates torsional crankshaft vibrations
Exceeds SFI 18.1 Certified 18.1 specs
Black zinc chromate finished
OEM equipment on ZZ572 GM Crate Engines
Tunable, rebuildable, and extremely efficient at ALL RPM
Laser engraved 360 timing marks
Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. This 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).Features: ATI GM LS1 7.074 Harmonic Damper - SFI 18.1 Certified 917211GM LS1 7.074 Harmonic Damper - SFI 18.1 CertifiedPit Stop USA offers ATI GM LS1 7.074 Harmonic Damper - SFI 18.1 Certified 917211 at low everyday prices. Be sure to check out all of our products from ATI Performance Products including ATI Performance Products Harmonic Balancers - SB Chevy.