JE Pistons SUB WRX EJ205 92.5mm Bore CR 9.5 KIT Set of 4 Pistons

This kit from JE Pistons gets you everything you need to rebuild your Subaru WRX EJ205 engine with a set of four forged pistons. You'll receive the pistons themselves, along with high-quality wrist pins, locks, and JE's Pro Seal premium piston rings. These pistons are forged in the USA from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines pushed hard in racing or performance applications.

JE Pistons has been making performance pistons for over 75 years, and they've applied that experience to this specific kit for the EJ205. They use 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, these pistons might also feature an accumulator groove to help manage combustion gas pressure, improving ring seal and preventing flutter. Some applications also include a skirt coating to further reduce friction and wear on the cylinder walls, which also helps quiet down the engine operation. Every part of this kit is made 100% in the USA, ensuring you're getting a well-built component designed for serious performance.

This kit is designed for a 92.5mm bore and a 9.5:1 compression ratio, making it a solid choice for many EJ205 engine builds. Please note that this kit is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.