JE Pistons SUB EJ25 DOHC 8.5:1 KIT Set of 4 Pistons

If you're rebuilding the engine in your Subaru EJ25 DOHC, these JE Pistons are a solid choice for a high-performance build. JE Pistons has been making forged pistons for over 75 years, and they engineer these specifically for your engine to give you the best combination of durability and performance. They're made in the USA from 2618 aluminum, which is strong enough for demanding applications.

These pistons feature JE's 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, they may also include an accumulator groove to help manage combustion gas pressure, leading to better ring seal and consistent power. A skirt coating can also be included to further reduce friction and wear on the piston skirts and cylinder walls, which also helps quiet down engine noise. This kit includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings, so you have most of what you need to get them installed.

This kit is designed for a 3.917-inch bore and offers an 8.5:1 compression ratio, making it suitable for boosted applications where you need to manage cylinder pressures. Remember, these pistons are not CARB approved and cannot be shipped to California.