CP Piston & Ring Set for Subaru BRZ FA20 - Bore (86.5mm) - Size (+.5mm) - CR (10.0) - Set of 4

CP Pistons is well-known for making strong internal engine components, and this piston and ring set for the Subaru BRZ FA20 is a prime example of their work. If you're rebuilding the engine in your BRZ, especially if you're looking to handle more power or refresh a worn-out engine, this set is built to perform. It's designed to fit the FA20 engine, which is common in the BRZ, and comes with everything you need for a set of four cylinders.

This set features pistons with a bore size of 86.5mm, which is a +0.5mm oversize. This is useful if your engine cylinders have been bored out during a rebuild to clean up any imperfections or to achieve a specific clearance. The compression ratio is set at 10.0:1, a solid figure that balances power output with pump gas compatibility for many applications. These are forged pistons, meaning they start as a solid block of aluminum that's heated and hammered into shape. This process creates a much stronger and more durable piston than cast ones, making them a popular choice for performance builds or engines that see hard use.

When you're putting these pistons in, remember they are a +0.5mm oversize. Make sure your engine block has been machined to this specific size. This set includes the pistons and the necessary rings to go with them, simplifying your parts list for the rebuild. It's important to note that this kit is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for specific details on fitting and break-in procedures.