CP Piston BRS Chevy LS3 4.065 Bore 4.125 Stroke 6.125 Rod Set Of 8 (MTO Non-Cancel)

This is a set of eight forged pistons from CP Pistons, specifically designed for Chevy LS3 engines. These pistons feature a 4.065-inch bore and are intended to work with a 4.125-inch stroke crankshaft and 6.125-inch connecting rods. CP Pistons are known for their robust construction, making them a solid choice for high-performance engine builds where durability and reliability under stress are critical.

The BRS series pistons are forged from high-strength aluminum alloy, which offers a good balance of light weight and toughness. This material choice helps reduce reciprocating mass, allowing the engine to rev more freely while also withstanding the high cylinder pressures and temperatures common in performance applications. The 4.065-inch bore size is standard for the LS3 engine, and these pistons are designed to be a direct replacement for stock, assuming the correct crankshaft and rod combination is used. Each piston is precision-machined to ensure consistent dimensions and proper sealing with the cylinder walls and rings.

Because these pistons are made-to-order, they are non-cancelable once production begins. This means you'll want to be sure of your engine specifications before placing your order. They are not CARB approved and cannot be shipped to California. If you're building a performance LS3 engine and need a well-built set of pistons that can handle the demands of racing or serious street use, this set from CP Pistons is a strong option.