{"product_id":"manley-performance-forged-piston-fa20f-86mm-std-10-1-dish-2015-subaru-wrx-single-632700ca-1","title":"Manley Performance Forged Piston FA20F 86mm STD 10:1 Dish Single Subaru WRX 2015-2021 | 632700CA-1","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Manley Performance 632700CA-1 is a precision-forged dish piston engineered specifically for the 2015+ Subaru WRX FA20F turbocharged engine. Designed for enthusiasts and builders who demand OEM-plus reliability with performance-grade strength, this single piston (Grade A) delivers a factory 86mm standard bore fitment at a 10:1 compression ratio — ideal for boosted street builds and light track applications. Whether you're refreshing a worn engine or building a reliable high-output FA20F, this is the best forged replacement piston for 2015+ Subaru WRX builds.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Forged Construction\u003c\/strong\u003e — Forged aluminum alloy provides superior strength-to-weight ratio over cast pistons, withstanding the elevated cylinder pressures of a turbocharged FA20F platform.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e86mm Standard (STD) Bore — Grade A\u003c\/strong\u003e — Drop-in fitment for factory-spec bores that are within tolerance; no overbore or custom machining required for a standard rebuild.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e10:1 Compression Ratio Dish Design\u003c\/strong\u003e — Optimized dish profile lowers effective compression ratio to complement forced induction tuning strategies, supporting higher boost levels safely.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFA20F Direct Application\u003c\/strong\u003e — Engineered to the exact specifications of Subaru's FA20F direct\/port injection turbocharged engine, ensuring correct pin diameter, ring grooves, and skirt geometry.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle Piston Sold Separately\u003c\/strong\u003e — Purchase only what you need; perfect for replacing a single damaged piston without committing to a full set.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManley Performance Engineering\u003c\/strong\u003e — Backed by decades of motorsport and OEM-replacement piston manufacturing expertise, trusted by professional engine builders worldwide.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized Skirt Coating\u003c\/strong\u003e — Low-friction skirt treatment reduces parasitic drag during break-in and throughout the piston's service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Manley Forged Dish Piston (Grade A) — 86mm STD Bore\u003c\/li\u003e\n  \u003cli\u003eNote: Piston rings, wrist pin, and clips are sold separately unless otherwise specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e632700CA-1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eman632700CA-1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e807298093116\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eManley Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eBore Size\u003c\/th\u003e\n\u003ctd\u003e86mm Standard (STD) — Grade A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCompression Ratio\u003c\/th\u003e\n\u003ctd\u003e10:1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003ePiston Design\u003c\/th\u003e\n\u003ctd\u003eDish\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eForged Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003eSingle Piston (1pc)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eEngine Application\u003c\/th\u003e\n\u003ctd\u003eSubaru FA20F Turbocharged\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003ePistons — Forged — Single\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis Manley forged piston is engineered exclusively for the \u003cstrong\u003e2015 and newer Subaru WRX\u003c\/strong\u003e equipped with the \u003cstrong\u003eFA20F turbocharged flat-four engine\u003c\/strong\u003e. It is designed for standard (STD) Grade A bore diameters — meaning the cylinder bore must measure within the factory-spec tolerance range for a proper fit. Always verify your cylinder bore diameter with a bore gauge before ordering. This piston is \u003cstrong\u003enot compatible\u003c\/strong\u003e with the EJ-series engines (EJ205, EJ257) or the naturally aspirated FA20E found in the BRZ\/86 platform.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatible Vehicles:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2015–2021 Subaru WRX (VA) — FA20F Engine\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eIs this piston compatible with the Subaru WRX STI?\u003c\/em\u003e No — the WRX STI uses the EJ257 engine. This piston is designed specifically for the FA20F found in the non-STI WRX.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eInstallation of this forged piston requires a full engine teardown and is recommended for experienced engine builders or professional machine shops. Proper cylinder bore measurement (Grade A tolerance verification), piston-to-wall clearance confirmation, ring end-gap filing, and torque-to-yield fastener replacement are all critical steps. A professional engine build is strongly recommended to ensure longevity and proper sealing. Always consult Manley's published clearance specifications before final assembly.\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":67648693108832,"sku":"man632700CA-1","price":187.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1398\/9853\/files\/632700CA-1.webp?v=1792502305","url":"https:\/\/www.importimageracing.com\/products\/manley-performance-forged-piston-fa20f-86mm-std-10-1-dish-2015-subaru-wrx-single-632700ca-1","provider":"Import Image Racing","version":"1.0","type":"link"}