{"product_id":"je-pistons-ultra-series-4g63-85mm-bore-10-0-1-cr-set-of-4-pistons-evo-8-10","title":"JE Pistons Ultra Series 4G63 85mm Bore 10.0:1 CR Set of 4 Pistons (361290) - EVO 8\/9","description":"\u003cp\u003eJE Pistons Ultra Series 4G63 85mm Bore 10.0:1 CR Set of 4 Pistons, part number 361290, made to fit the Mitsubishi EVO 8\/9.\u003c\/p\u003e\u003cp\u003eUltra Series forged pistons from JE are the industry’s strongest, most fully featured pistons available off the shelf. Offered for Mitsubishi 4G63 Engines. 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 the following custom level features\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAccumulator Groove: A specialty groove between the top and second ring provides added volume for blow-by gases. This helps reduce pressure between the rings, improving top ring seal and minimizing ring flutter at high cylinder pressures.\u003c\/li\u003e\n\u003cli\u003eLateral Gas Ports: This process mills slots into the top of the top ring groove and provides a pathway for combustion pressure to get behind the top ring. Resulting in increased ring seal and is most common in circle track applications.\u003c\/li\u003e\n\u003cli\u003eThermal Crown: Applied to the piston crown, this thermal barrier coating reflects heat back into the combustion chamber to improve exhaust gas velocity and scavenging while reducing heat transfer to help extend piston life.\u003c\/li\u003e\n\u003cli\u003eJE’s proprietary Aligned Grain Flow forging technology providing next-level tensile strength ideal for the extreme cylinder pressures of power adder engine builds.\u003c\/li\u003e\n\u003cli\u003ePin Fit: The pin bore is precision honed to attain an exact pin clearance. Clearances typically range from .0003 to .0010 between the wrist pin and pin bore.\u003c\/li\u003e\n\u003cli\u003eSkirt Coat: Skirt Coat reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise\u003c\/li\u003e\n\u003cli\u003eSmooth Crown Finish: Deburs all areas around the valve pocket and dome area, to reduces stress risers and prevent hot spots.\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for Mitsubishi 4G63 Engines. To provide optimized performance durability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJE Pistons Ultra Series Mitsubishi EVO 7-9 4G63 85mm Bore 10.0:1 CR Set of 4 Pistons\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: JE Pistons\u003c\/li\u003e\n\u003cli\u003ePart number: 361290\u003c\/li\u003e\n\u003cli\u003eCategory: Engine Components \/ Piston Sets - Forged - 4cyl\u003c\/li\u003e\n\u003cli\u003eShipping weight: 6 lb\u003c\/li\u003e\n\u003cli\u003eNot CARB approved. Not legal for sale or use in California on pollution-controlled vehicles.\u003c\/li\u003e\n\u003cli\u003eCalifornia Prop 65 warning applies to this product.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCheck the fitment against your car before ordering. If you are not sure it fits, send us a message with your year and trim.\u003c\/p\u003e","brand":"JE Pistons","offers":[{"title":"Default Title","offer_id":67834076233788,"sku":"361290","price":1124.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0405\/5868\/files\/9f7d4ed01e81a7126d5d4e68ff864c19L_8c9f34ee-ea82-4158-bab9-fc1748667945.jpg?v=1792892142","url":"https:\/\/lancershop.com\/products\/je-pistons-ultra-series-4g63-85mm-bore-10-0-1-cr-set-of-4-pistons-evo-8-10","provider":"LancerShop.com","version":"1.0","type":"link"}