CP Piston BRS Big Block 4.625 Bore 4.250 Stroke 6.385 Rod 1.275 Set Of 8 (MTO Non-Cancel)

Forged from 2618-T61 aluminum, these CP-Carrillo Billet Race Series (BRS) pistons are built for serious big block performance builds. The 2618-T61 alloy is known for its strength and ability to withstand high temperatures and pressures, making it a solid choice for engines pushed to their limits. This set is specifically designed for a 4.625 inch bore with a 4.250 inch stroke, and utilizes a 6.385 inch rod length, ensuring precise fitment for your custom engine assembly.

Each piston in this set of eight features a deep dish design, engineered to provide a specific compression ratio when paired with the correct cylinder heads and crankshaft. The skirt design incorporates lateral gas ports, which help to transfer combustion pressure to the back of the piston ring, improving ring seal and reducing blow-by. This advanced design contributes to a more efficient burn and can help maintain oil control under demanding conditions. The wrist pin diameter is 1.275 inches, a common size for high-performance applications, and the pistons are ready to accept your chosen wrist pins and locks.

These pistons are a made-to-order item and cannot be canceled once production begins, so please confirm your specifications carefully before ordering. They are not CARB approved and cannot be shipped to California. For builders looking for a well-built, high-performance piston set for their big block engine, this CP-Carrillo offering provides the strength and design features needed for competitive racing or extreme street use.