SBF 6.375 in Steel Harmonic Balancer - SFI

The SBF 6.375 in Steel Harmonic Balancer - SFI from Power Bond Balancers is a race-grade crankshaft damper engineered for high-performance Small Block Ford engines. Designed for competitors and enthusiasts who demand reliable harmonic control without excess weight, this lightweight balancer reduces vibration and protects critical engine components during sustained high-RPM operation. The SFI 18.1 certification ensures compliance with sanctioning body standards for drag racing, circle track, and street performance applications.

This balancer features a steel construction with black powder-coat finish, combining durability with a professional appearance in the engine bay. The 6.375-inch outer diameter and internal balance design integrate seamlessly with Small Block Ford crankshafts, absorbing torsional vibration that can otherwise fatigue engine internals and compromise longevity. At 7.09 lbs, the lightweight construction minimizes parasitic loss while the harmonic damping technology maintains precise crankshaft dynamics across the RPM band. The SFI certification confirms this unit meets safety and performance standards for organized motorsports competition.

Engine builders and racers targeting Small Block Ford platforms—from oval track to bracket racing—will benefit from this balancer's race-proven design and compliance credentials. Installation requires proper alignment with the crankshaft centerline; correct fitment ensures optimal damping performance and prevents vibration-related failures during peak acceleration. Whether you're building a competition engine or restoring a classic with modern performance demands, this SFI-certified balancer delivers the harmonic control necessary for reliable, sustained high-output operation.