Supertech Honda K 86.02mm Bore 1.181in Comp Height +11cc Dome 12:1 CR Pistons- Set of 4 (Excl Rings)

What you get in this box is a set of four Supertech forged pistons, each measuring 86.02mm in bore diameter. These pistons are designed for Honda K-series engines and feature a +11cc dome volume, which helps achieve a 12:1 compression ratio. Keep in mind that this set does not include piston rings, so you'll need to source those separately.

These pistons are forged from high-strength aluminum, a material chosen for its excellent strength-to-weight ratio, which is crucial for high-performance engine components. The 86.02mm bore size is a common upgrade for K-series engines, often used when rebuilding or modifying for increased displacement. The +11cc dome shape is specifically engineered to work with certain cylinder head combustion chamber designs to achieve the target 12:1 compression ratio, offering a noticeable bump in power and throttle response compared to stock. The compression height of 1.181 inches is also a critical dimension that ensures proper piston-to-valve clearance and deck height when used with the correct connecting rods.

When installing these pistons, it's important to follow the manufacturer's recommended clearances and procedures. Because these are forged pistons, they are built to withstand the higher cylinder pressures and temperatures associated with performance engine builds. If you're looking to increase the performance of your Honda K-series engine, these pistons are a solid foundation for a more powerful build.