Supertech Honda K Series 86.02mm 1.181in CH -6cc Dome 9:1 CR Piston - Set of 4 (Excl Rings)

This is a set of four Supertech forged pistons designed for Honda K-series engines. Each piston measures 86.02mm in bore diameter and features a -6cc dome volume, resulting in a 9:1 compression ratio when installed. Please note that this set does not include piston rings; they must be purchased separately. These pistons are a solid option for rebuilding or upgrading your K-series engine, offering a robust foundation for enhanced performance.

Forged pistons like these are built from a single block of aluminum that is heated and hammered into shape under extreme pressure. This process creates a much stronger and more durable piston compared to cast pistons, making them better suited for higher performance applications where increased cylinder pressures and temperatures are common. The 9:1 compression ratio is a moderate increase over stock, suitable for naturally aspirated builds or those using mild forced induction setups. The -6cc dome design is specific to achieving this compression ratio with the K-series cylinder head volume. Proper installation is crucial, and it's recommended to consult your engine builder or a service manual for precise clearance and assembly procedures.

When considering a piston upgrade, it's important to ensure all supporting components are up to the task. This includes the crankshaft, connecting rods, bearings, and the engine management system. These Supertech pistons are a significant part of an engine build, and their performance will be realized when paired with other quality engine components. Remember that this product cannot be shipped to California due to CARB regulations.