JE Pistons SUB WRX EJ205 93mm Bore CR 8.5 KIT Set of 4 Pistons

This kit gives you four JE Pistons, specifically made for Subaru WRX EJ205 engines with a 93mm bore and a compression ratio of 8.5:1. You'll also get high-quality wrist pins, locks, and JE Pro Seal premium piston rings, all ready to go into your engine. These pistons are forged in the USA from 2618 aluminum, a material known for its strong tensile strength, which is crucial for engines pushed hard in performance applications.

JE Pistons uses their proprietary Forged Side Relief (FSR) design. This helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, which also saves weight. Depending on the specific application, these pistons might also feature an accumulator groove to help manage combustion gas pressure, leading to better ring seal and consistent power. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, while also helping to quiet down engine noise. These are designed specifically for each engine and its intended use, aiming for a balance of performance and durability.

Because these are performance-oriented forged pistons, they are intended for high-demand applications. 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.