ATI Super Damper Harmonic Balancer Steel Shell 3 Ring 6.325 inch Chevy 918940

CHEVROLET FRONT. This is the damper shell assemblies only without a hub.
Steel Shell 
6.325" O.D.

3 RING

Total weight 8.3 lbs
Inertia weight 2.4 lbs

Super Damper Harmonic Dampers

• 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 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).