{"product_id":"supertech-bmw-s54-dual-valve-spring-kit-w-seat-bms55","title":"Supertech BMW S54 Dual Valve Spring Kit (w\/SEAT-BMS55)","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e SPRK-2521-2BM-ST | \u003cstrong\u003eUPC:\u003c\/strong\u003e 1037721244165\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eSupertech BMW S54 Dual Valve Spring Kit (w\/SEAT-BMS55) 2001-2006 E46 M3\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eEquip your BMW S54 engine with the Supertech Dual Valve Spring Kit including SEAT-BMS55 seats designed specifically for 2001-2006 E46 M3 models. This kit delivers consistent spring pressure to prevent valve float during high RPM operation. Engine builders rely on it for reliable performance in street and track applications.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Spring Design:\u003c\/strong\u003e Inner spring wire dia 1.80mm OD 9.50mm outer wire dia 3.00mm OD 22.50mm for reduced harmonics and rev capability over 8500 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Pressure Ratings:\u003c\/strong\u003e Seat pressure 160lbs at 1.700in open 380lbs at 1.100in max lift 11.20mm coil bind height 0.886in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Materials:\u003c\/strong\u003e High tensile chrome silicon steel shot peened heat treated and stress relieved for extended fatigue life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded SEAT-BMS55:\u003c\/strong\u003e Precision machined valve seats ensure proper fit and seal with stock or aftermarket valves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e 24 dual valve springs and 24 seats for full top end rebuild on S54 engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVerify valve stem to guide clearance before installation\u003c\/li\u003e\n\u003cli\u003eSprings maintain stock installed height for direct compatibility\u003c\/li\u003e\n\u003cli\u003eStore in original packaging to prevent contamination\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\u003eUse a high quality spring compressor tool rated for dual springs\u003c\/li\u003e\n\u003cli\u003eCompatible with stock retainers and locks or Supertech titanium upgrades\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\u003e2001-2006\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003eCoupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2001-2006\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003eConvertible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2001-2006\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003eCSL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Supertech?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProven in motorsport with championship winning teams\u003c\/li\u003e\n\u003cli\u003eIn-house manufacturing controls every production step\u003c\/li\u003e\n\u003cli\u003eComputer optimized spring rates for exact engine match\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 Does this fit all 2001-2006 BMW E46 M3 models?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes it fits all S54 equipped E46 M3 Coupe Convertible and CSL models from 2001-2006 with no modifications needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material are the springs made from?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Constructed from premium chrome silicon steel with shot peening heat treatment and black oxide finish for corrosion resistance and durability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty on this kit?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Supertech offers a limited lifetime warranty against manufacturing defects when installed by certified professionals\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 or FedEx\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 Secure foam packed box 12in x 8in x 6in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":43981377273935,"sku":"SPTSPRK-2521-2BM-ST","price":922.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/supertech-bmw-s54-dual-valve-spring-kit-wseat-bms55-supertech.jpg?v=1767893873","url":"https:\/\/www.blackopsautoworks.com\/products\/supertech-bmw-s54-dual-valve-spring-kit-w-seat-bms55","provider":"Black Ops Auto Works","version":"1.0","type":"link"}