{"product_id":"wiseco-subaru-ej257-piston-set-99-75mm-bore-forged-racing-pistons-for-high-performance-builds","title":"Wiseco Subaru EJ257 Piston Set - 99.75mm Bore, Forged Racing Pistons for High-Performance Builds","description":"Professional Series forged racing pistons from Wiseco are no-expense-spared pistons designed for the serious racers and builders. Packed full of custom-level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco?s Professional Series.\nWiseco Subaru EJ257 Piston Set, 99.75 mm Bore, 30.70 mm Compression Height, 0.9055 in. Pin Diameter, Sport Compact, Set of 4.\n\u003cul\u003e\n  \u003cli\u003eEngineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength\u003c\/li\u003e\n  \u003cli\u003ePrecision ring grooves, anti-detonation groove, and additional ring seal improving features\u003c\/li\u003e\n  \u003cli\u003eArmorGlide  Skirt Coating: seizure resistant, friction reduction, and quieter operation\u003c\/li\u003e\n  \u003cli\u003eDesigned and built to withstand heavy to severe duty performance applications\u003c\/li\u003e\n  \u003cli\u003eFully machined crown features\u003c\/li\u003e\n  \u003cli\u003eForced pin oiling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Wiseco K598M9975AP Professional Series forged pistons are engineered for serious Subaru EJ257 engine applications. Crafted from 2618 aluminum in the USA, these pistons offer enhanced tensile strength and durability for high-stress race environments. Designed specifically for 99.75mm bore engines, they feature precision machined crown surfaces and multiple ring grooves, including an anti-detonation groove to improve sealing and combustion efficiency. The set includes premium rings and is built to withstand heavy-duty performance demands, making it ideal for severe racing and performance upgrades. The ArmorGlide skirt coating reduces friction, minimizes seizure risk, and provides quieter operation, contributing to longer-lasting and more reliable engine performance. Forced pin oiling further enhances durability by ensuring consistent lubrication, even under extreme conditions. These pistons are fully machined for precise fitment and designed to help racers and builders remove limits and achieve maximum engine potential. Please note that these pistons are not CARB approved and require acknowledgment of this when installing. They are suitable for use in high-performance racing applications where durability and precision are paramount, offering a professional-grade solution for serious automotive enthusiasts.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eEngineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision ring grooves, anti-detonation groove, and additional ring seal improving features\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eArmorGlide skirt coating for seizure resistance, friction reduction, and quieter operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned and built to withstand heavy to severe duty performance applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFully machined crown features for precise fitment\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eForced pin oiling to ensure consistent lubrication under extreme conditions\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":53602409939217,"sku":"K598M9975AP","price":873.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/64570d3842ebb970704b28fbd762642a.jpg?v=1779940570","url":"https:\/\/shoprenegade.com\/products\/wiseco-subaru-ej257-piston-set-99-75mm-bore-forged-racing-pistons-for-high-performance-builds","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}