JE Pistons FA20 - 4UGSE 9.5:1 KIT Set of 4 Pistons

JE Pistons is known for making well-built forged pistons with over 75 years of experience, and this 4-cylinder piston kit for the Subaru FA20 engine is no exception. If you're rebuilding the heart of your performance vehicle, these pistons are built to handle the stress of demanding applications. They are forged in the USA using 2618 aluminum, which gives them the high tensile strength needed for serious performance work.

This kit includes a set of four pistons, each featuring JE's proprietary Forged Side Relief (FSR) design. This design helps minimize friction and power loss by using a reduced skirt width and a shorter wrist pin, which also saves weight. Depending on the specific application, you might also find an accumulator groove to help manage combustion gas pressure, improving ring seal and keeping power consistent. Some applications also include a skirt coating to further reduce friction and wear on the piston skirts and cylinder walls, which can also help quiet down engine noise. These pistons are designed specifically for the FA20 engine to optimize performance and durability.

When you open the box, you'll find everything you need to get these pistons installed: high-quality wrist pins, locks, and JE's Pro Seal premium piston rings. Remember, 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 details.