Summit Racing™ Bracket Racer SFI Harmonic Dampers for 1997-2013 CORVETTE, 2004-2007 CTS, 2008-2009 G8

Summit Racing™ Bracket Racer SFI Harmonic Damper

Fitment / Compatibility

• These dampers are designed for bracket racing, high-RPM, high-stress environments.

• They meet SFI-18.1 certification standards.

• Spin-tested to 12,500 RPM to verify durability under high rotational speeds.

• They are carbon steel dampers with bonded elastomer inserts, used in applications that require both vibration absorption and high strength.

• Because there are multiple configurations, match bore size, belt spacing, and pulley requirements to your engine setup.

Key Features & Highlights

• Certified SFI-18.1, making them suitable for many racing sanctioning bodies.

• Spin-tested to 12,500 RPM to confirm safe operation at high engine speeds.

• Constructed from carbon steel with injection-molded and bonded elastomer elements to damp torsional vibrations.

• Engraved timing marks are easy to read for tuning and adjustments.

• Some versions come with removable counterweights to allow balancing or tuning for specific engine setups.

• Elegant finish: highly polished and baked-enamel coating to resist corrosion and provide a clean look.

• Integrated design: the damper includes both harmonic absorption and crank pulley function in one unit (on compatible versions).