GM LS Steel Harmonic Balancer SFI 25% U/D

The GM LS Steel Harmonic Balancer SFI 25% U/D from Power Bond Balancers is designed specifically for LS-platform engines, providing essential crankshaft vibration control for high-performance and racing applications. This balancer is crucial for dampening harmonic oscillations that can occur at high RPMs, especially in setups with forced induction where stock components may fail.

Constructed from durable steel, this harmonic balancer features a 25% under-drive ratio, which reduces accessory belt speed relative to crankshaft speed. This design minimizes parasitic drag and enhances horsepower delivery, making it particularly beneficial for turbocharged and supercharged LS builds. The SFI 25.1 certification ensures that this component meets rigorous safety and performance standards, providing peace of mind under extreme load conditions.

Engine builders, drag racers, and street performance enthusiasts will find significant advantages in using this balancer, especially when modifying fuel systems or ignition timing beyond stock capabilities. Its robust construction and effective vibration damping characteristics help protect the crankshaft and extend engine longevity, making it a vital upgrade for serious LS engine applications.