{"title":"E30 M3 2.5L EVO","description":"","products":[{"product_id":"supertech-high-performance-valve-spring-kit-bmw-s14","title":"BMW S14 Valve Springs by SuperTech","description":"\u003cp\u003eEnhance your BMW's performance with Supertech high-performance valve spring kits, meticulously engineered for \u003cstrong\u003eBMW S14B20, S14B23, S14B25, and S14B27\u003c\/strong\u003e engines. Designed specifically for the demands of high-performance applications, these valve springs deliver unmatched valve control and reliability, essential for any serious engine build.\u003c\/p\u003e\n\u003cp\u003eEach kit includes high-quality valve springs and all necessary components for seamless installation. \u003cstrong\u003eCrafted from premium materials, Supertech valve springs excel in durability and performance,\u003c\/strong\u003e easily surpassing stock options. With optimized spring rates, they \u003cstrong\u003eimprove valve control, reduce the risk of valve float, and enable higher RPM operation\u003c\/strong\u003e, ensuring your engine operates at its best under demanding conditions.\u003c\/p\u003e\n\u003cp\u003eSupertech has built a solid reputation among performance enthusiasts, engine builders, and professional racing teams because of their commitment to quality and performance.\u003c\/p\u003e\n\u003cp\u003eWhen selecting valve springs for your BMW engine, Supertech stands out for its reliability and performance. Make the informed choice and invest in Supertech high-performance valve springs to maximize your engine’s potential and enjoy the confidence that comes with using a proven product.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #f90f0f;\"\u003e \u003cstrong\u003eInstallation requires the expertise of an engine builder.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cstrong\u003eBMW S14 Applications:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B20\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1989-1991      E30     320is [Portugal and Italy]\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B23\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1986-1991      E30     M3\u003cbr\u003e1986-1987      E30     M3 Evo I\u003cbr\u003e1988      E30     M3 Evo II\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B25\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1990      E30     M3 Sport Evo (Evo III)\u003c\/p\u003e","brand":"SuperTech","offers":[{"title":"92 lbs","offer_id":45632634356019,"sku":"SUP-HPVSK-S14-92","price":699.99,"currency_code":"USD","in_stock":true},{"title":"110 lbs","offer_id":45632634388787,"sku":"SUP-HPVSK-S14-110","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/3827\/3587\/files\/Supertech-High-Performance-Valve-Spring-Kit-for-BMW-S14-Engines.webp?v=1711660582"},{"product_id":"samsonas-motorsport-dogbox-kit-bmw-e30-m3","title":"Samsonas Motorsport Dogbox Kit, BMW E30 M3","description":"\u003cp\u003eThe Samsonas Motorsport E30 M3 Dogbox Gearkit is designed to fit into the original E30 Getrag 265 Housing. This gearkit features a new surface and profile big teeth, as well as a clutch shaft made from special driveshaft steel. \u003c\/p\u003e\n\u003cp\u003eWith straight cut gears, racers will notice minimum rolling resistance. Each Samsonas gearbox features super finished, shot-peened gears and internals for optimal quality, and all selectors, shifting fingers, protections, forks, and rods are made from billet steel for maximum reliability. \u003c\/p\u003e\n\u003cp\u003eThese gearboxes are suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRally\u003c\/li\u003e\n\u003cli\u003eEndurance Racing\u003c\/li\u003e\n\u003cli\u003eTime Attack\u003c\/li\u003e\n\u003cli\u003eRallycross\u003c\/li\u003e\n\u003cli\u003eCircuit\u003c\/li\u003e\n\u003cli\u003eHill Climb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e5-Speed Group A Touring Gearkit Ratios\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eI\u003c\/strong\u003e     2,336     36\/16\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eII\u003c\/strong\u003e     1,682     34\/21\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIII\u003c\/strong\u003e     1,358     34\/26\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIV\u003c\/strong\u003e     1,149     31\/28\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eV\u003c\/strong\u003e     1,000     -\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eC\u003c\/strong\u003e     1,038     27\/26\u003c\/p\u003e\n\u003ch4\u003e6-Speed Group A Rally Gearkit Ratios\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eI\u003c\/strong\u003e     2,449     32\/15\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eII \u003c\/strong\u003e    1,913     30\/18\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIII \u003c\/strong\u003e    1,579     33\/24\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIV \u003c\/strong\u003e    1,332     29\/25\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eV \u003c\/strong\u003e    1,148     24\/24\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVI \u003c\/strong\u003e    1,000     -\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eR\u003c\/strong\u003e     2,448     32\/15\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eC\u003c\/strong\u003e     1,148     31\/27\u003c\/p\u003e\n\u003ch4\u003e6-Speed Non-Homologated Ratios\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eI\u003c\/strong\u003e     2,615\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eII\u003c\/strong\u003e     1,938\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIII \u003c\/strong\u003e    1,563\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIV \u003c\/strong\u003e    1,316\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eV\u003c\/strong\u003e     1,136\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVI\u003c\/strong\u003e     1,000\u003c\/p\u003e","brand":"Samsonas Motorsport Gearboxes","offers":[{"title":"5-Speed Group A Touring","offer_id":48535103013171,"sku":"","price":7399.99,"currency_code":"USD","in_stock":true},{"title":"6-Speed Group A Rally","offer_id":48535103045939,"sku":"","price":7399.99,"currency_code":"USD","in_stock":true},{"title":"6-Speed Non-Homologated","offer_id":48535103111475,"sku":"","price":6799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/3827\/3587\/files\/Samsonas-Dogbox-Gearkit-for-BMW-E30-M3-Group-A-Transmission.webp?v=1712155335"},{"product_id":"s14-cylinder-head-service","title":"S14 Cylinder Head Service by 5150 AutoSport","description":"\u003cp\u003e\u003cstrong\u003e5150 AutoSport Performance Cylinder Head Services for BMW S14 Engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003ePlease note that price is based on customer providing core. If you need help sourcing a core, please \u003ca href=\"mailto:sales@5150autosport.com\"\u003econtact our sales team\u003c\/a\u003e.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eInvesting in a performance cylinder head service is crucial for optimizing engine potential in performance builds. We offer three levels of service to meet your budget and build goals, from OEM refresh to full race-level machining:\u003c\/p\u003e\n\u003ch3 data-start=\"703\" data-end=\"766\"\u003e\u003cstrong data-start=\"707\" data-end=\"764\"\u003eStage 1 – OEM Refresh (Rebuild \u0026amp; Reliability Focused)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"767\" data-end=\"835\"\u003e\u003cem\u003eIdeal for stock or mildly modified engines needing a proper refresh.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-start=\"837\" data-end=\"1417\"\u003eThe cylinder head is fully disassembled, cleaned, and soda blasted to remove carbon and contaminants. Valve guides are measured and inspected, with new guides installed if needed, then precision reamed and honed for proper clearance. A 5-angle valve job is performed to restore sealing efficiency, followed by resurfacing to ensure a flat, true mating surface. New Viton valve seals are installed, the head is fully reassembled using OEM valves, guides, springs, and retainers, and pressure tested after assembly.\u003cbr data-start=\"1350\" data-end=\"1353\"\u003e\u003cem data-start=\"1353\" data-end=\"1417\"\u003eOptional service upgrade: add a \u003ca href=\"https:\/\/5150autosport.com\/collections\/valve-spring-kits?filter.v.m.mm-google-shopping.custom_label_0=S14\u0026amp;sort_by=best-selling\"\u003ehigh-performance valve spring kit\u003c\/a\u003e.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-start=\"837\" data-end=\"1417\"\u003e\u003cstrong\u003e\u003cem data-start=\"1353\" data-end=\"1417\"\u003eStage 1 at a Glance: \u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eDisassemble and Clean\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eSoda Blast\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eInspect and Measure Valve Guides\n\u003cul\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eRemoval and Installation of new Guides, if necessary\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eReam and Hone Valve Guides\u003c\/li\u003e\n\u003cli\u003e5-Angle Valve Job\u003c\/li\u003e\n\u003cli\u003eResurfacing\u003c\/li\u003e\n\u003cli\u003eFinal Wash\u003c\/li\u003e\n\u003cli\u003eInstall New Viton Valve Seals\u003c\/li\u003e\n\u003cli\u003eSetting of Seat Pressure\u003c\/li\u003e\n\u003cli\u003eFull Reassembly\u003c\/li\u003e\n\u003cli\u003ePressure Testing after assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"703\" data-end=\"766\"\u003e\u003cstrong data-start=\"707\" data-end=\"764\"\u003eStage 2 – \u003cspan\u003ePerformance Valvetrain Upgrade\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1475\" data-end=\"1522\"\u003e\u003cem\u003eFor higher RPM builds and increased durability.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-start=\"1524\" data-end=\"1834\"\u003eIncludes everything from \u003cstrong data-start=\"1549\" data-end=\"1560\"\u003eStage 1\u003c\/strong\u003e\u003cstrong\u003e, plus upgraded high-performance valves, a high-performance valve spring kit, and new valve locks\/keepers.\u003c\/strong\u003e This stage improves valvetrain stability, reduces the risk of valve float, and prepares the head for more aggressive use while retaining OEM-style machining processes.\u003c\/p\u003e\n\u003cp data-start=\"837\" data-end=\"1417\"\u003e\u003cstrong\u003e\u003cem data-start=\"1353\" data-end=\"1417\"\u003eStage 2 at a Glance: \u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eDisassemble and Clean\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eSoda Blast\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eRemoval of OEM Valve Guides\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eInstallation of Performance Valve Guides\u003c\/li\u003e\n\u003cli\u003eReam and Hone Valve Guides\u003c\/li\u003e\n\u003cli\u003e5-Angle Valve Job\u003c\/li\u003e\n\u003cli\u003eResurfacing\u003c\/li\u003e\n\u003cli\u003eFinal Wash\u003c\/li\u003e\n\u003cli\u003eInstall New Viton Valve Seals\u003c\/li\u003e\n\u003cli\u003eInstall New High Performance Valve Spring Kit\u003c\/li\u003e\n\u003cli\u003eInstall New High Performance Valve Kit\u003c\/li\u003e\n\u003cli\u003eInstall New High Performance Valve Keepers\u003c\/li\u003e\n\u003cli\u003eSetting of Seat Pressure\u003c\/li\u003e\n\u003cli\u003eFull Reassembly\u003c\/li\u003e\n\u003cli\u003ePressure Testing after assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"703\" data-end=\"766\"\u003e\u003cstrong data-start=\"707\" data-end=\"764\"\u003ePro-Xtreme – All-Out Performance Cylinder Head Service\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1906\" data-end=\"1977\"\u003e\u003cem\u003eDesigned for high-horsepower, forced-induction, and competition builds.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-start=\"1979\" data-end=\"2938\"\u003eThe cylinder head undergoes complete disassembly, cleaning, and in-depth inspection, including crack, leak, and pressure testing. Factory valve guides are replaced with high-performance guides, then precision reamed and honed for extreme heat and RPM stability. \u003c\/p\u003e\n\u003cp data-start=\"1979\" data-end=\"2938\"\u003eCNC multi-angle porting is performed on both intake and exhaust ports to improve airflow consistency across all cylinders. A CNC multi-angle intake valve job and radius exhaust valve job optimize flow into and out of the combustion chamber. Valves are unshrouded to further enhance airflow, and preventative chamfering is applied in critical areas to reduce stress concentrations.\u003c\/p\u003e\n\u003cp data-start=\"1979\" data-end=\"2938\"\u003eThe mating surface is trueness checked, resurfaced, and verified again for perfect sealing. After machining, the head is thoroughly washed and assembled using balanced and blueprint-matched high-performance valves, along with balanced valve springs and retainers for precise valve control and long-term durability.\u003c\/p\u003e\n\u003cp data-start=\"837\" data-end=\"1417\"\u003e\u003cstrong\u003e\u003cem data-start=\"1353\" data-end=\"1417\"\u003ePro-Xtreme at a Glance: \u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eDisassemble and Clean\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eSoda Blast\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eRemoval of OEM Valve Guides\u003c\/li\u003e\n\u003cli data-start=\"837\" data-end=\"1417\"\u003eInstallation of Performance Valve Guides\u003c\/li\u003e\n\u003cli\u003eReam and Hone Valve Guides\u003c\/li\u003e\n\u003cli\u003e5-Axis CNC Intake Porting\u003c\/li\u003e\n\u003cli\u003e5-Axis CNC Exhaust Porting\u003c\/li\u003e\n\u003cli\u003eCNC Combustion Chamber Modification\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e5-Angle CNC Intake Valve Job\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e5-Angle CNC Exhaust Valve Job\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUnshrouding of Valves\u003c\/li\u003e\n\u003cli\u003ePreventative Chamfering in Potential Problem Areas\u003c\/li\u003e\n\u003cli\u003eTrueness Checking of Mating Surface\u003c\/li\u003e\n\u003cli\u003eResurfacing\u003c\/li\u003e\n\u003cli\u003eFinal Wash\u003c\/li\u003e\n\u003cli\u003eInstall New Viton Valve Seals\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInstall New High Performance Valve Spring Kit\u003c\/li\u003e\n\u003cli\u003eInstall New High Performance Valve Kit\u003c\/li\u003e\n\u003cli\u003eInstall New High Performance Valve Keepers\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003eSetting of Seat Pressure\u003c\/li\u003e\n\u003cli\u003eFull Reassembly\u003c\/li\u003e\n\u003cli\u003ePressure Testing after Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eRead more about our Pro-Xtreme service \u003ca href=\"https:\/\/5150autosport.com\/blogs\/product-faq\/5150-pro-xtreme-cylinder-head-services\"\u003ehere\u003c\/a\u003e. \u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/F0_2xENSHKY?si=NiO2ktNtUdHj0CxZ\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eBMW S14 Applications:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B20\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1989-1991      E30     320is [Portugal and Italy]\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B23\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1986-1991      E30     M3\u003cbr\u003e1986-1987      E30     M3 Evo I\u003cbr\u003e1988      E30     M3 Evo II\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B25\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1990      E30     M3 Sport Evo (Evo III)\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003ePhotos for reference only - B48 cylinder head pictured\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"5150 AutoSport","offers":[{"title":"Stage 1","offer_id":53018775159091,"sku":"5150-CH-S14-S1","price":1000.0,"currency_code":"USD","in_stock":true},{"title":"Stage 2","offer_id":53018775191859,"sku":"5150-CH-S14-S2","price":2500.0,"currency_code":"USD","in_stock":true},{"title":"Pro-Xtreme","offer_id":53018775224627,"sku":"5150-CH-S14-XT","price":3800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/3827\/3587\/files\/BMW-S14-Cylinder-Head-in-Rottler-5-Axis-CNC-Machine.webp?v=1736192962"},{"product_id":"bmw-s14-valves","title":"BMW S14 Valves by SuperTech","description":"\u003cp\u003eThe \u003cstrong\u003eSuperTech High-Performance Valve Kit\u003c\/strong\u003e for the \u003cstrong\u003eBMW S14\u003c\/strong\u003e engine is designed for enthusiasts and engine builders seeking superior durability, reliability, and power gains. Engineered specifically for the high-revving \u003cstrong\u003eS14 4-cylinder\u003c\/strong\u003e, this kit is ideal for \u003cstrong\u003erace, track, and performance street applications\u003c\/strong\u003e, ensuring maximum airflow and efficiency.\u003c\/p\u003e\n\u003cp\u003eSuperTech’s precision-crafted valves offer \u003cstrong\u003eexceptional strength and heat resistance\u003c\/strong\u003e, making them a trusted choice for demanding performance builds. With an optimized design to enhance airflow, these valves contribute to improved \u003cstrong\u003ehorsepower, throttle response, and overall engine efficiency\u003c\/strong\u003e—critical for extracting the full potential of the legendary \u003cstrong\u003eBMW S14\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eManufactured from \u003cstrong\u003epremium materials\u003c\/strong\u003e and built to exact specifications, SuperTech valves ensure \u003cstrong\u003eperfect fitment\u003c\/strong\u003e and \u003cstrong\u003elong-term reliability\u003c\/strong\u003e in high-performance applications. Whether you're rebuilding an \u003cstrong\u003eE30 M3 engine\u003c\/strong\u003e for competition or enhancing its street performance, this kit delivers \u003cstrong\u003eproven power gains and consistent results\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for BMW S14 Engines\u003c\/strong\u003e – Precision-engineered for E30 M3 applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Airflow \u0026amp; Power\u003c\/strong\u003e – Increases engine efficiency and performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Heat Resistant\u003c\/strong\u003e – Built to withstand extreme temperatures and high RPM use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for Racing \u0026amp; Street Performance\u003c\/strong\u003e – Suitable for high-output applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven by Engine Builders\u003c\/strong\u003e – Trusted SuperTech quality for performance enthusiasts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTake your \u003cstrong\u003eBMW S14 engine\u003c\/strong\u003e to the next level with \u003cstrong\u003eSuperTech’s high-performance valve kit\u003c\/strong\u003e—designed to deliver \u003cstrong\u003emaximum reliability and power\u003c\/strong\u003e where it matters most.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003e\u003cstrong\u003eStandard Size is 37 mm Intake \/ 32 mm Exhaust\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003e\u003cstrong\u003eLonger length valves are for shim-under-bucket applications. \u003cspan style=\"color: rgb(255, 42, 0);\"\u003eIf you aren't sure which valves you need for your application, CONSULT WITH A PROFESSIONAL ENGINE BUILDER.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\n\u003cem\u003e\u003cstrong\u003eKit Contents: \u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e(8) Intake Valves \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e(8) Exhaust Valves \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eBMW S14 Applications:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B20\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1989-1991      E30     320is [Portugal and Italy]\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B23\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1986-1991      E30     M3\u003cbr\u003e1986-1987      E30     M3 Evo I\u003cbr\u003e1988      E30     M3 Evo II\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBMW S14B25\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e1990      E30     M3 Sport Evo (Evo III)\u003c\/p\u003e","brand":"SuperTech","offers":[{"title":"37 mm - 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data-end=\"635\"\u003eSupertech\u003c\/strong\u003e performance valves, valve spring kit, and shim-under-bucket setup\u003c\/li\u003e\n\u003cli data-start=\"704\" data-end=\"759\"\u003e\n\u003cstrong data-start=\"704\" data-end=\"733\"\u003eSchrick 292\/284 camshafts\u003c\/strong\u003e with adjustable cam gears\u003c\/li\u003e\n\u003cli data-start=\"762\" data-end=\"807\"\u003eModified camshaft box for high-rpm durability\u003c\/li\u003e\n\u003cli data-start=\"810\" data-end=\"845\"\u003e\n\u003cstrong data-start=\"810\" data-end=\"824\"\u003eJE Pistons\u003c\/strong\u003e – 11.5:1 compression\u003c\/li\u003e\n\u003cli data-start=\"848\" data-end=\"883\"\u003e\u003cstrong data-start=\"848\" data-end=\"883\"\u003eArrow precision connecting rods\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"886\" data-end=\"931\"\u003eNew Sport Evo-spec oil squirters and oil pump\u003c\/li\u003e\n\u003cli data-start=\"934\" data-end=\"981\"\u003eNew timing chains, chain guides, and water pump\u003c\/li\u003e\n\u003cli data-start=\"984\" data-end=\"1014\"\u003eNew \u003cstrong data-start=\"988\" data-end=\"1014\"\u003eGRP Motorsport Oil Pan\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1017\" data-end=\"1080\"\u003eCarbon fiber airbox with 48mm individual throttle bodies (ITBs)\u003c\/li\u003e\n\u003cli data-start=\"1083\" data-end=\"1118\"\u003e50\/50 race headers for maximum flow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1120\" data-end=\"1151\" class=\"\"\u003e\u003cstrong data-start=\"1120\" data-end=\"1151\"\u003eDrivetrain and Electronics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1154\" data-end=\"1204\"\u003e\n\u003cstrong data-start=\"1154\" data-end=\"1180\"\u003e5-Speed Dogleg Gearbox\u003c\/strong\u003e with Sport Evo Flywheel\u003c\/li\u003e\n\u003cli data-start=\"1207\" data-end=\"1245\"\u003eShifter assembly and linkages included\u003c\/li\u003e\n\u003cli data-start=\"1248\" data-end=\"1271\"\u003e\n\u003cstrong data-start=\"1248\" data-end=\"1262\"\u003eDriveshaft\u003c\/strong\u003e included\u003c\/li\u003e\n\u003cli data-start=\"1274\" data-end=\"1368\"\u003e\n\u003cstrong data-start=\"1274\" data-end=\"1300\"\u003eMilSpec Engine Harness\u003c\/strong\u003e paired with a \u003cstrong data-start=\"1315\" data-end=\"1334\"\u003eLife Racing ECU\u003c\/strong\u003e — professionally built and mapped\u003c\/li\u003e\n\u003cli data-start=\"1371\" data-end=\"1422\"\u003eComplete sensor package for plug-and-play operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1424\" data-end=\"1452\" class=\"\"\u003e\u003cstrong data-start=\"1424\" data-end=\"1452\"\u003eCooling and Accessories:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1455\" data-end=\"1497\"\u003eHigh-efficiency radiator with electric fan\u003c\/li\u003e\n\u003cli data-start=\"1500\" data-end=\"1522\"\u003eCoolant expansion tank\u003c\/li\u003e\n\u003cli 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