Oldsmobile 455 6.625" External Balanced Fluid Damper Harmonic Balancer SFI 18.1 Speedmaster axles are manufactured using

Speedmaster axles are manufactured using cutting-edge technology and techniques

All the factory flaws redesigned to be eliminated

Speedmaster belt drives represent the ultimate in cam timing systems

Engineered for accurate

Constructed from a composite material with a steel core

Oldsmobile 455 6.625" External Balanced Fluid Damper Harmonic Balancer SFI 18.1 Speedmaster axles are manufactured usingUsing 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.