Supertech Honda B16 85mm 1.181in CH -2.5cc Flat 9.7:1 CR Piston - Set of 4 (Excl Rings)

This Supertech piston set includes four forged pistons designed for Honda B16 engines. Each piston measures 85mm in bore size and features a flat top with a -2.5cc dish, resulting in a 9.7:1 compression ratio when installed. These pistons are built for performance applications, offering a well-built alternative to stock components for engine rebuilds or upgrades. They are sold as a set of four, but please note that piston rings are not included and must be purchased separately.

Crafted from forged aluminum, these pistons are considerably stronger and more durable than cast pistons, making them suitable for higher performance demands and increased cylinder pressures. The 85mm bore size is a common upgrade for B16 engines, allowing for increased displacement and potential power gains when paired with other modifications. The specific compression ratio of 9.7:1 is a balanced choice, providing improved performance over stock while still allowing for safe operation on pump gas in many setups. The 1.181-inch compression height is also a critical measurement for ensuring proper piston-to-valve clearance and deck height, which is crucial for engine longevity and performance.

When undertaking an engine rebuild with these pistons, it's important to ensure all related components are in good condition. This includes checking cylinder walls for straightness, ensuring proper bearing clearances, and verifying valve-to-piston clearance with the chosen camshafts and cylinder head. Because piston rings are not included, you'll need to select a compatible set that matches the 85mm bore size and the specific ring land dimensions of these pistons. Always refer to the manufacturer's installation instructions for detailed specifications and recommended procedures.