JE Pistons Ultra Series Honda K20A 87mm Bore 10.0:1 CR - Single Piston

If you're building a high-performance Honda K20A engine, these Ultra Series pistons from JE Pistons are a solid option. They're forged from 2618 aluminum, which is a strong material well-suited for the extreme pressures found in boosted or high-RPM applications. This specific piston has an 87mm bore and a 10.0:1 compression ratio, designed to work with the K20A engine.

What sets these apart is the attention to detail for demanding builds. They feature JE's proprietary Aligned Grain Flow forging technology, which maximizes the material's tensile strength. You also get a thermal barrier crown coating that reflects heat back into the combustion chamber, helping to keep the piston crown cooler. The skirt coating is there to reduce friction and wear against the cylinder walls, which can also quiet things down a bit, especially on cold starts. Plus, they include lateral gas ports to help maintain a good seal on the top compression ring, even when you're running high boost.

These pistons come with strong, thick-wall wrist pins made by Trend Performance. Everything is made 100% in the USA. Keep in mind these are not CARB approved and cannot be shipped to California. You'll want to refer to JE Pistons' installation instructions for specific details on fitting these into your K20A build.