JE Pistons Acura K24/K20 87mm Bore 9cc Dome (Set of 4 Pistons)

If you're building a high-performance K-series engine for your Acura, these JE Pistons are a solid choice. This set includes four forged pistons designed specifically for K24 and K20 engines with an 87mm bore. They feature a 9cc dome, which is crucial for achieving specific compression ratios when paired with the right cylinder head and gasket combination. JE Pistons has been making performance pistons for over 75 years, and these are engineered to handle the demands of racing and serious street performance.

These pistons are forged in the USA from 2618 aluminum, a material known for its high tensile strength, making it well-suited for high-stress engine applications. JE incorporates a proprietary Forged Side Relief (FSR) design, which helps reduce friction and weight by using a narrower skirt and a shorter wrist pin. Depending on the specific application, you might also find an accumulator groove to help reduce combustion gas pressure, leading to better ring seal and consistent power. Some applications also include a skirt coating to further reduce friction and wear on the cylinder walls, which can also help quiet down engine noise.

This kit comes complete with high-quality wrist pins, locks, and JE's Pro Seal premium piston rings, so you have everything you need to get these pistons installed. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.