Chevy GM LS LS1 LS6 UnderDrive Fluid Damper Harmonic Balancer SFI 18.1 Speedmaster LS dual 4-barrel

Speedmaster LS dual 4-barrel

short block engines are the solution to a hassle-free power build

acceleration is more responsive

The internal components are made from EN36 Material as used in racing

Chevy GM LS LS1 LS6 UnderDrive Fluid Damper Harmonic Balancer SFI 18.1 Speedmaster LS dual 4-barrelUsing 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.