JE Pistons Subaru EJ20 Head/EJ25 Block Ultra Series 3.927 in. - 367904

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Ultra Series forged pistons from JE are the industry?s strongest, most fully featured pistons available off the shelf. Offered for a wide range of import and sport compact applications from 2JZ to 4G63 and Audi to BMW, Ultra Series pistons feature JE?s proprietary Aligned Grain Flow forging technology providing next-level tensile strength ideal for the extreme cylinder pressures of power adder engine builds. Equipped with custom level features including thermal barrier crown coating, skirt coating, gas ports, and more, Ultra Series are the ideal pistons for your high-boost build. As with all JE Pistons products, Ultra Series pistons are made 100% in the USA.

JE Ultra, Subaru, EJ Series, 3.927 in. Bore, 8.50:1, Inverted Dome/Dish, 4 Cyl. Piston Kit

This part fits:Subaru EJ255/EJ257 with EJ20 Head

Designed for Power: Every feature on Ultra Series Pistons are optimized to perform high-horsepower racing enginesAligned Grain Flow Technology: Exclusively available on JE Ultra Series, this proprietary, in-house forging process maximizes tensile strength to withstand the stresses of high-performance engine environmentsSkirt Coating: Reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise, especially on cold startThermal Barrier Crown Coating: This ceramic-based coating reflects heat into the combustion chamber, therefore reducing piston crown temperatures and improving exhaust gas scavengingHigh-Strength Wrist Pins: Premium thick-wall wrist pins are manufactured by Trend Performance in the USA and are designed for the demands of high-performance/power-adder buildsLateral Gas Ports: Help maintain power-producing ring seal at the top compression ring, even in high RPM and high boost situationsOptimized Pin Oiling: Enhanced pin oiling features keep pin, pin bores, and small-end lubricated for reduced heat, friction, and wearMade 100% in the USA. JE Pistons Subaru EJ20 Head/EJ25 Block Ultra Series 3.927 in. Bore Kit Set of 4 Pistons. Piston Set, 2618, Inv Dome/Dish, 3.937 Bore, 1.209 CD, 0.905 Pin, Set of 4.. JE Pistons, Piston Kit. Engine Piston Kit. Piston Kit

Whether its for a full rebuild or some standard maintenance, the proper engine components are needed to make sure your vehicle is running smooth.

Pistons are another vital component to an engines performance. If you are looking to upgrade the horsepower or add more boost to your car, we recommend upgrading to a forged set of pistons that can handle the boost and horsepower.

NOT CARB-APPROVED. ILLEGAL TO USE OR INSTALL IN CALIFORNIA. IF YOU LIVE IN CA, WE CANNOT SHIP YOU THIS ITEM AND YOU WILL BE CHARGED A 10% CANCELLATION FEE IF YOU ORDER. PLEASE LOOK FOR OTHER PRODUCTS WITH CARB APPROVAL.

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WARNING: Cancer & Reproductive Harm. For more information, go to www.P65Warnings.ca.gov

With over 70 years of experience, JE Pistons is the leader in high performance forged pistons. We've built a reputation that the competition can only follow. JE has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance enthusiasts trust and rely on.