Chevy GM LS 010 Main Bearings [4.8 5.3 5.7 6.0 6.2] from performance street to competition

from performance street to competition use

Our rear-ends have a reputation for being tough to handle the abuse of Circle Track

with the performance and durability required to reach the winner's circle

stable air flow at any rpm

These Speedmaster supercharger manifolds are aluminum constructed and suitable for competition or street use

Chevy GM LS 010 Main Bearings [4.8 5.3 5.7 6.0 6.2] from performance street to competitionThese Speedmaster main bearings are just what you need to freshen up your engine. Why? They use silicon aluminum bi metal construction. Silicon aluminum is the choice for many of today's engine manufacturers because of its high fatigue strength and superior temperature threshold. Bearing wear is dramatically reduced and the fatigue strength is greatly improved.