Supertech Honda K20 Series 87.0mm Bore +8cc Dome 11.5:1 CR Pistons - Set of 4 (Excl Rings)

These Supertech pistons feature an 87.0mm bore and a +8cc dome volume, designed to achieve an 11.5:1 compression ratio for your Honda K20 series engine. Forged from high-strength aluminum, they are built to handle the demands of performance builds where increased compression is desired. The dome shape is specifically engineered to work with the K20 cylinder head's combustion chamber, optimizing airflow and combustion efficiency for improved power output. This set includes four pistons, but please note that piston rings are sold separately and will need to be sourced to complete the installation.

The choice of forged aluminum over cast aluminum means these pistons offer superior strength and durability, making them a solid option for engines that will see spirited driving or track use. The 87.0mm bore size is a common upgrade for K20 engines, allowing for a slight increase in displacement over the stock bore. When rebuilding your K20, using pistons with a specific dome volume like this +8cc design helps you precisely control the final compression ratio, which is crucial for tuning and achieving your desired performance goals. It's important to ensure your engine's cylinder head and block are in good condition and properly machined to accept these pistons for a reliable rebuild.

Before ordering, please be aware that these pistons are not CARB approved and cannot be shipped to California. It is recommended to consult with your engine builder or a qualified mechanic to confirm compatibility with your specific engine build and to ensure all necessary components, including piston rings and bearings, are accounted for. Proper installation according to manufacturer guidelines is essential for the longevity and performance of these pistons.