Blower Super Damper Harmonic Balancer SFI Approved - Steel Suit BB Chev 7" O.D, Dual Keyway 3/16" & 1/4", 6-Bolt

The patented ATI Super Damper is the only damper designed exclusively for high performance engines.

• Eliminates torsional crankshaft vibrations
• Exceeds SFI 18.1 specs
• Black zinc chromate finished
• Tunable, rebuildable, and extremely efficient at ALL RPM
• Laser engraved 360° timing marks