Supertech Honda B20 Block B16 Head 84.5mm Bore +5.5cc Dome 9.6:1 CR Pistons - Set of 4 (Excl Rings)

If you're building a high-performance Honda engine, especially one that combines a B20 block with a B16 cylinder head, these Supertech pistons are a key component to consider. They are specifically designed to work in this popular hybrid setup, aiming for a 9.6:1 compression ratio with their 5.5cc dome volume and 84.5mm bore size. This setup is often chosen for its balance of power and drivability, making it suitable for a wide range of performance applications.

These pistons are forged from high-strength aluminum, a material chosen for its ability to withstand the high pressures and temperatures found in a performance engine. The forging process creates a denser, more durable grain structure compared to cast pistons, which is essential for reliability under demanding conditions. The 84.5mm bore size is a common upgrade for B20 blocks, allowing for increased displacement when paired with the B16 head. The 5.5cc dome is precisely shaped to achieve the target 9.6:1 compression ratio, which is a good middle ground for naturally aspirated builds or those running moderate boost. Keep in mind that these pistons are sold as a set of four and do not include piston rings, so you'll need to source those separately to complete the installation.

When installing these pistons, it's crucial to follow the manufacturer's recommended clearances and lubrication procedures. Proper ring installation and cylinder wall preparation are vital for ensuring the longevity and performance of your engine build. Because these are performance-oriented components, they are not CARB approved and cannot be shipped to California. Always consult your engine builder or the manufacturer's detailed installation guide for specific requirements.