CP Piston BRS Bbf 521Cuin Head:460 Iron Bore :4.390 Set Of 8 (MTO Non-Cancel)

CP Pistons is well-known for making strong internal engine components, and this set of forged pistons for your 521 cubic inch Big Block Ford (BBF) engine is a prime example. These pistons are built to handle the demands of a high-performance build, whether you're racing or just want a serious street engine. They feature a 4.390 inch bore, which is 0.030 inch undersize, meaning they're intended for blocks that have been machined to that specific dimension.

Crafted from durable forged aluminum, these pistons offer a significant advantage over cast pistons. The forging process aligns the grain structure of the aluminum, making them much stronger and more resistant to detonation and fatigue under high cylinder pressures. This strength is crucial for engines that see heavy use or are pushed to their limits. The BRS series is designed for robust performance, ensuring reliability when you need it most. Because these are made to order, they are built specifically for your application, ensuring a precise fit and optimal performance once installed.

This set includes pistons for all 8 cylinders. Please note that these pistons are not CARB approved and cannot be shipped to California. It's always a good idea to confirm your engine block's bore size and condition before ordering, especially when dealing with specific undersizes like this 0.030 inch option.