{"product_id":"cp-pistons-forged-piston-ring-set-subaru-brz-fa20-86mm-bore-10-5-1-cr-set-of-4-sc7407-4","title":"CP Pistons Forged Piston \u0026 Ring Set Subaru BRZ FA20 86mm Bore 10.5:1 CR - Set of 4 | SC7407-4","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe CP Pistons Forged Piston \u0026amp; Ring Set for the Subaru BRZ FA20 engine is a precision-engineered performance upgrade designed for enthusiasts and builders demanding maximum reliability under high-stress conditions. Featuring an 86mm bore diameter and a 10.5:1 compression ratio, this set of 4 forged pistons is purpose-built for naturally aspirated builds, forced induction applications, and competition use where stock cast pistons simply cannot keep up. Whether you're building a street sleeper or a dedicated track car, CP Pistons delivers the strength and consistency that serious engine builders trust.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForged 2618 or 4032 Aluminum Construction\u003c\/strong\u003e — Dramatically superior strength and fatigue resistance compared to OEM cast pistons, capable of withstanding extreme cylinder pressures and thermal stress cycles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e86mm Bore Diameter\u003c\/strong\u003e — Precision-machined to exact tolerances for a proper seal and optimal ring seal performance in stock or lightly bored FA20 applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10.5:1 Compression Ratio\u003c\/strong\u003e — Optimized for high-performance naturally aspirated or mildly boosted builds, maximizing combustion efficiency and power output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Ring Set Included\u003c\/strong\u003e — Matched performance ring pack included with each set, eliminating the guesswork of sourcing compatible rings separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC-Machined Precision\u003c\/strong\u003e — Each piston is machined to exacting tolerances ensuring consistent weight matching across all four pistons for a smoother, more balanced rotating assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Ports \u0026amp; Coatings (where applicable)\u003c\/strong\u003e — Advanced piston design features gas ports and thermal\/friction-reducing coatings to improve ring seal and reduce parasitic losses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for FA20 Architecture\u003c\/strong\u003e — Engineered specifically around the Subaru FA20 flat-four engine geometry, ensuring proper pin height, compression height, and valve relief clearances\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e4x CP Forged Pistons (86mm bore, 10.5:1 CR)\u003c\/li\u003e\n\u003cli\u003e4x Matched Performance Ring Sets\u003c\/li\u003e\n\u003cli\u003eCP Pistons documentation \/ spec sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eCP Pistons (Carrillo Products)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eSC7407-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003ecppSC7407-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eSubaru BRZ \/ Toyota 86 — FA20 Engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e86mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompression Ratio\u003c\/th\u003e\n\u003ctd\u003e10.5:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003eSet of 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eForged Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRing Set\u003c\/th\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine Code\u003c\/th\u003e\n\u003ctd\u003eFA20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis CP Pistons forged set is specifically designed for the \u003cstrong\u003eSubaru BRZ and Toyota 86 (GT86\/FRS)\u003c\/strong\u003e equipped with the \u003cstrong\u003eFA20 naturally aspirated boxer four-cylinder engine\u003c\/strong\u003e. Fitment covers model years where the FA20 platform was used (2012–2021 for BRZ Gen 1; verify bore and compression specifications with your engine builder before ordering). These pistons are ideal for engines being freshened, rebuilt, or taken beyond stock displacement with a light bore. Always confirm wrist pin diameter, compression height, and deck clearance with a qualified engine builder to ensure proper fitment for your specific build.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eCross-reference OEM part numbers and bore measurements before ordering. Not compatible with the FA24 engine found in 2022+ BRZ\/GR86 models.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eInstallation of forged pistons requires a complete engine disassembly and should be performed by a qualified engine builder or machine shop. The cylinder bores must be properly measured, honed, and finished to the correct bore size and surface finish prior to installation. Proper piston-to-wall clearance, ring end-gap filing, and rod bearing selection are critical steps that must be completed by an experienced professional. This is not a bolt-on component — professional engine assembly is strongly recommended to ensure long-term reliability and performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this set CARB compliant?\u003c\/strong\u003e Forged piston sets are internal engine components intended for closed-course competition or off-highway use. Check local emissions regulations before use on street-registered vehicles. These pistons do not alter external emissions equipment but may affect emissions compliance depending on your build configuration.\u003c\/p\u003e","brand":"CP Pistons","offers":[{"title":"Default Title","offer_id":67648693076064,"sku":"cppSC7407-4","price":899.85,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1398\/9853\/files\/0_764cb1263464d5ce26f06ba2e78b8adb_normalized.webp?v=1792501192","url":"https:\/\/www.importimageracing.com\/products\/cp-pistons-forged-piston-ring-set-subaru-brz-fa20-86mm-bore-10-5-1-cr-set-of-4-sc7407-4","provider":"Import Image Racing","version":"1.0","type":"link"}