Supertech Honda B16A 81.02mm 1.181in CH -2.5cc Flat Top 9:1 CR Piston - Set of 4 (Excl Rings)

If you're rebuilding the engine in your Honda B16A, a solid set of pistons is crucial for performance and reliability. This set from Supertech is built for those looking to get the most out of their engine, offering a 9:1 compression ratio with a flat-top design. These pistons are designed to fit an 81.02mm bore, which is a common size for B16A engines, and they come in a set of four, excluding piston rings, so you can choose the exact ring set you prefer.

Supertech uses a forged aluminum construction for these pistons, which is significantly stronger and more durable than cast aluminum. This makes them well-suited for higher performance applications where increased cylinder pressures are expected. The flat-top design with a -2.5cc dish is specifically calculated to achieve a 9:1 compression ratio when paired with the stock B16A cylinder head. This compression ratio is a good balance for many street and track setups, offering improved power without being overly sensitive to fuel quality.

When installing these pistons, remember that they are designed for a specific bore size and require proper ring gap setting according to the manufacturer's specifications. It's also important to ensure your cylinder head and block surfaces are perfectly clean and prepared for reassembly. Because these are forged pistons, they are built to handle the demands of a performance engine build, providing a strong foundation for your B16A.