CP Piston BRS Chevy LS2 4.005 Bore 3.622 Stroke 6.098 Rod 9.1 Set Of 8 (MTO Non-Cancel)

This is a set of eight forged pistons from CP Pistons, specifically designed for Chevy LS2 engines. These pistons are built for a 4.005 inch bore, a 3.622 inch stroke, and use a 6.098 inch connecting rod with a 9.1 compression ratio. Because these are made to order, they are non-cancelable, so be sure this is exactly what you need for your build. CP Pistons are well-known in performance circles for their robust construction and attention to detail, making them a solid choice for serious engine work.

The BRS series pistons are forged from a strong aluminum alloy, which offers a good balance of strength and light weight. This is crucial for high-performance applications where the pistons experience extreme forces. The 4.005 inch bore size is a common upgrade for LS2 engines, allowing for increased displacement when paired with the correct crankshaft and connecting rods. The 6.098 inch rod length is also a key dimension that affects the piston's position in the cylinder at top dead center and bottom dead center, influencing compression and valve-to-piston clearance. The 9.1 compression ratio is a moderate figure, suitable for naturally aspirated or forced induction setups where pump gas is a consideration, offering a good compromise between power and reliability.

When installing these pistons, it's important to follow the manufacturer's detailed specifications for ring gap, piston-to-wall clearance, and rod bearing clearance. These are critical for engine longevity and performance. Because these are custom-made, they are non-returnable, so double-checking your engine specifications and build plan before ordering is essential. This set includes all eight pistons needed for a complete engine rebuild.