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Speedmaster Stainless steel rollers are manufactured from heat-treated stainless steel and alloy steel tip rollers
solid steel construction
An engine with a 4340 billet steel crankshaft will rev faster and cleaner due to the different harmonics produced from the high grade material
They're 40 percent lighter
Chevy SBC 350 6.250" Internal SFI-Rated Fluid Damper Harmonic Balancer Speedmaster Stainless steel rollers areSpeedmaster harmonic balancers are crafted from high quality steel and feature a tuned elastomer for optimal engine performance. They include a strong bonding process, easy to read timing marks, and an advanced design to absorb engine vibrations, extending the life of the crankshaft and bearings for enhanced power and torque.
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