CP Piston Bullet Race Series Small Block Chevy 4.125 Bore 3.750 Stroke 6.000 Rod Set Of 8

These pistons are constructed from high-strength aluminum alloy, offering excellent resistance to detonation and fatigue. They feature a skirt profile optimized for reduced friction and improved piston-to-wall contact, which helps maintain consistent performance and durability. This specific set is for a 4.125-inch bore, a 3.750-inch stroke, and is intended for use with a 6.000-inch connecting rod. The 0.030-inch undersize indicates these pistons are for blocks that have been bored out by 0.030 inches to ensure a precise fit and proper clearance. The pistons are proudly made in the USA from 2618 forgings, featuring symmetrical valve pockets, .310 deep intake pockets, 1.5 mm steel gas nitride top ring, 1.5 mm Napier second ring, 3.0mm oil ring, and include .927 x 2.500 pins with a .150 wall standard. They are designed to fit all 23° cylinder heads.