JE Pistons Subaru EJ257 100mm Bore CR 8.5:1 Set of 4 Pistons Kit designed for racing application to provide the ultimate combination of durability and performance. From drift track to drag strip, JE Pistons’ performance is proven in victory lane time and time again.
 
Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
Skirt coating (depending on application) reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise
Accumulator groove (depending on application) helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power
Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
 
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