JE Pistons 2012+ Subaru FA20E/FA20F Bore 87, Size +1.00, Stroke 86, 10.6:1 C/R -10.8CC (Set of 4)

Using a 2618 aluminum alloy, these JE Pistons are forged in the USA to handle the demands of high-performance Subaru FA20E and FA20F engines. This specific set is designed for a 3.425-inch bore, which is 1.00mm over the stock size, and features a dome piston design that results in a 10.6:1 compression ratio. This updated compression ratio is ideal for builds looking for a noticeable increase in power and responsiveness.

JE Pistons incorporates several design elements to ensure durability and performance. The proprietary Forged Side Relief (FSR) forging design helps minimize friction and weight by reducing skirt width and utilizing a shorter wrist pin. Depending on the specific application, an accumulator groove may be included to help reduce combustion gas pressure, which can prevent ring flutter and improve ring seal for consistent power delivery. Additionally, a skirt coating, if included for this application, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

This kit includes everything needed to get your engine rebuilt: four forged pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings. These pistons are made 100% in the USA, reflecting JE Pistons' commitment to quality and performance honed over 75 years in the racing piston industry. Please note that this part is not CARB approved and cannot be shipped to California.