GM LS1/LS6 Harmonic Damper - Non-SFI

The Professional Products GM LS1/LS6 Harmonic Damper – Non-SFI is designed specifically for street and strip LS engine builders who require dependable crankshaft vibration control without the need for SFI certification. This damper is essential for maintaining harmonic balance in high-revving LS engines, where uncontrolled crankshaft oscillation can lead to significant engine damage.

Engineered with advanced elastomer technology, this harmonic damper effectively absorbs torsional vibrations throughout the engine's RPM range, safeguarding the crankshaft and other drivetrain components from resonance-induced wear. Its robust steel construction and precision-balanced rotating mass ensure reliable performance and minimal runout, making it a critical component for any LS engine setup.

Ideal for LS1 and LS6 engine builders, this damper is compatible with various applications, including Corvette, Camaro, GTO, and crate engine installations. Installation is straightforward, as it bolts directly to OEM-spec crankshaft bolt patterns on Gen III and Gen IV LS platforms, making it a practical choice for both street use and weekend track days.