Supertech Honda K Series 86.50mm Bore -6cc Dome 9:1 CR Pistons - Set of 4 (Excl Rings)

If you're rebuilding the engine in your Honda K-series vehicle and aiming for a specific compression ratio, a solid set of forged pistons is where you start. These Supertech pistons are designed for an 86.50mm bore and feature a -6cc dome, which helps achieve a 9:1 compression ratio. This makes them a strong option for naturally aspirated builds or those looking for a reliable foundation for forced induction with a moderate boost level.

Forged pistons are built to handle more stress than cast pistons, making them a popular choice for performance engine builds. Supertech uses quality materials and manufacturing processes to create these pistons, ensuring they can withstand the demands of a performance engine. The 86.50mm bore size is a common upgrade for K-series engines, allowing for a slight increase in displacement over stock. Remember 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 procedures. Proper balancing of the rotating assembly, including these pistons, is also essential for engine longevity and smooth operation. Always refer to the detailed installation instructions provided by Supertech or your engine builder to ensure the best results for your K-series build.