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an internal inertia ring
Whether it's a new build or just general maintenance Speedmaster has what you need to get out on the road
These replacement valve seats are just like the originals
then highly polished and chrome plated for lasting beauty
Chevy LS1 3.905" Bore 1.115" .927" Flat Top Forged Pistons an internal inertia ringSpeedmaster Forged pistons are made from 4032 aluminum alloy for quieter operation and reduced piston to wall clearance. Up to 20% lighter than traditional forged pistons that eliminate harmful stress concentrations for superior strength. Specifically designed for naturally aspirated or moderate nitrous applications.
