{"product_id":"manley-sport-compact-99-5mm-bore-1-2mm-x-1-2mm-x-2-0mm-standard-ring-set","title":"Manley Sport Compact 99.5mm Bore 1.2mm x 1.2mm x 2.0mm Standard Ring Set","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e46995-4\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298040882\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley Sport Compact 99.5mm Bore 1.2mm x 1.2mm x 2.0mm Standard Ring Set for 2004-2011 Subaru Impreza WRX STI\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eManley Sport Compact piston ring sets provide exact-fit sealing for Subaru EJ257 2.5L turbo engines in 2004-2011 Impreza WRX STI models. This 99.5mm bore set uses 1.2mm top ring 1.2mm second ring and 2.0mm oil ring for tight combustion seal and reduced oil consumption under boost. Engine builders count on these rings for steady cylinder pressure and lasting strength in high-performance setups.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e99.5mm Bore Sizing:\u003c\/strong\u003e Precision-matched to EJ257 cylinder bores to prevent compression loss and ensure even wear across cylinders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.2mm x 1.2mm x 2.0mm Thickness:\u003c\/strong\u003e Thin top and second rings cut drag while 2.0mm oil ring handles control for high-RPM turbo operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHard Chrome Plated Top Ring:\u003c\/strong\u003e Steel base with chrome plating resists scuffing and maintains seal amid high heat and boost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNapier Faced Second Ring:\u003c\/strong\u003e Cast iron build supports quick break-in and reliable performance in boosted applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlex-Vent Oil Control Ring:\u003c\/strong\u003e Three-piece steel setup releases oil vapors to keep combustion chambers clean and power strong.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSet contains four complete ring packs for one EJ257 engine rebuild.\u003c\/li\u003e\n\u003cli\u003eInspect bore finish and piston condition prior to installation for best results.\u003c\/li\u003e\n\u003cli\u003eShips in protective 6 x 4 x 1 inch cardboard box weighing 0.65 lbs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eFile-fit rings to specs top gap 0.013-0.016 inch second gap 0.013-0.016 inch oil rails 0.015 inch each expander 0.055-0.065 inch.\u003c\/li\u003e\n\u003cli\u003eCompatible with stock or aftermarket 99.5mm pistons no additional hardware required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2011\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2011\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI Special Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Manley?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTrusted by professional race teams for EJ engine builds worldwide.\u003c\/li\u003e\n\u003cli\u003eBuilt with aerospace-grade materials and processes for zero defects.\u003c\/li\u003e\n\u003cli\u003eSupported by detailed engineering data and real-world dyno testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this ring set fit later Subaru STI models?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Built for 2004-2011 Impreza WRX STI with 99.5mm EJ257 bores confirm piston bore size for 2012+ models.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What materials are used in these rings?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Top ring chrome-plated steel second napier-faced cast iron oil ring three-piece flex-vent steel for strength and sealing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty coverage applies?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Manley offers one-year limited warranty against manufacturing defects with certified professional installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective cardboard box measuring 6 x 4 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.65 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":43725614317647,"sku":"MAN46995-4","price":164.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/manley-sport-compact-99_5mm-bore-1_2mm-x-1_2mm-x-2_0mm-standard-ring-set-manley-performance.jpg?v=1767413649","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-sport-compact-99-5mm-bore-1-2mm-x-1-2mm-x-2-0mm-standard-ring-set","provider":"Black Ops Auto Works","version":"1.0","type":"link"}