SBC/Pont 6.325 Damper SFI-ASA Spec

The SBC/Pont 6.325 Damper SFI-ASA Spec by ATI Performance is an essential harmonic balancer for serious small-block builders and engine rebuilders who require reliability under high RPM and boost conditions. This damper is specifically engineered for small-block Chevrolet and Pontiac platforms, providing the precision tuning and safety certification necessary for both street and competition applications.

Designed to isolate crankshaft vibration, this damper protects the entire drivetrain from harmonically-induced failures. Built to SFI-ASA specification, the 6.325-inch outer diameter features a dual-elastomer internal construction that absorbs torsional vibration across the full RPM band while maintaining accurate ignition timing reference marks for tuning. The robust steel hub and premium rubber compound work together to prevent crankshaft fatigue cracks and bearing wear, which is critical when operating under extreme conditions.

This damper is ideal for engine builders, hot rodders, and performance enthusiasts looking to upgrade from worn or undersized balancers on existing small-block engines. Weighing 7.8 pounds, it is compact enough for tight engine bay configurations while delivering the damping capacity necessary for long-term reliability.