CP Piston BRS Chevy BB 489Ci Bore 4.280 Ch 1.270 Stroke 4.250 Rod 6.385 Set Of 8 (MTO Non-Cancel)

Forged from high-strength aluminum alloy, these CP Pistons are built for serious performance in Chevy Big Block 489ci applications. The BRS series features a specific design that balances strength and weight, crucial for engines pushing beyond stock limits. With a bore of 4.280 inches, a stroke of 4.250 inches, and a rod length of 6.385 inches, these pistons are engineered to work with a specific combination of crankshaft and connecting rod dimensions, ensuring optimal geometry and reduced stress within the engine. The compression height is set at 1.270 inches, which plays a key role in determining the final compression ratio when paired with your chosen cylinder heads and gasket thickness.

This set includes eight pistons, designed to replace the factory units in your V8 engine. The forged construction means these pistons are significantly stronger and more durable than cast pistons, making them a solid choice for high-performance builds, forced induction, or nitrous applications where cylinder pressures are substantially higher. CP Pistons is a well-known name in racing circles for producing reliable, high-performance engine components. These pistons are made to tight tolerances, which helps ensure a good seal against the cylinder wall for improved power and efficiency.

When installing these pistons, it's important to follow the manufacturer's recommended clearances and lubrication procedures. Because these are a custom-sized part, they are made-to-order and cannot be canceled once the order is placed. Please verify all engine dimensions and specifications before ordering to ensure compatibility with your specific crankshaft, connecting rods, and cylinder heads. Note that these pistons are not CARB approved and cannot be shipped to California.