Chevy GM LS LS1 LS6 UnderDrive Fluid Damper Harmonic Balancer SFI 18.1 Crafted from durable materials

Crafted from durable materials

They accurately measure camshaft centerline

Speedmaster brackets are constructed from durable steel

Windsor and Big block applications feature cast construction

These Speedmaster TDS rear housing ends will get the job done

Chevy GM LS LS1 LS6 UnderDrive Fluid Damper Harmonic Balancer SFI 18.1 Crafted from durable materialsUsing only three parts a laser welded sealed housing, an internal inertia ring, and highly viscous silicone fluid between the two these SFI approved Fluid dampers can control all crankshaft vibration, not just a limited frequency range. As a result, you get reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure.