{"product_id":"kit-de-muelles-de-valvula-conicos-de-alto-rendimiento-con-retenedores-de-acero-supertech-para-bmw-n54-turbo","title":"Supertech High Performance Dual Valve Spring Kit with Steel Retainers for BMW N54 Turbo","description":"\u003cp\u003eValve Spring Kit\u003c\/p\u003e\n\n\u003cp\u003eStrengthen your BMW N54 Turbo with the Supertech Valve Spring Kit. Key specifications: Spring Type: Conical Valve Spring, Seat Pressure: 75 lbs @ 36.50mm, Open Pressure: 155 lbs @ 10.00mm, Spring Rate: 7.8 lbs\/mm, Max Lift: 12mm, and Safe RPM: 8000. Each kit includes a complete valve train assembly (springs, retainers, locators, and keepers), making installation easy and eliminating clearance issues. Designed to control valve motion at high RPMs, reduce valve float, and support aggressive cam profiles. Compatible with most aftermarket and OEM camshafts within the rated lift range. Installation requires checking installed spring height with included shims and confirming retainer-to-seal clearance. Recommended for any setup with aggressive camshafts, increased RPM limits, or forced induction. Purchase directly from Supertech for fast shipping and expert technical support.\u003c\/p\u003e\n\n\u003cp\u003eSpecifications\u003c\/p\u003e\n\n\u003cp\u003eRetainer Quantity: 12 12\u003c\/p\u003e\n\n\u003cp\u003eSpring Kit: spr-fe20be\u003c\/p\u003e\n\n\u003cp\u003eSpring Quantity: 24\u003cbr\u003e\nSafe RPM Limit: 8000\u003cbr\u003e\nRetainer: Steel\u003cbr\u003e\nStiffness: 7.8 lb\/mm\u003cbr\u003e\nSpring Outer Diameter: 24.40mm\u003cbr\u003e\nSpring Inner Diameter: 17.60mm\u003cbr\u003e\nSpring Outer Diameter: 21mm\u003cbr\u003e\nSpring Inner Diameter: 14.20mm\u003cbr\u003e\nSeat Pressure: 75 lbs @ 36.50mm\u003cbr\u003e\nOpen Pressure: 155 lbs @ 10.00mm\u003cbr\u003e\nMaximum Lift: 12mm\u003cbr\u003e\nCoil Bind: 23.20mm\u003c\/p\u003e\n\n\u003cp\u003eEngines\u003c\/p\u003e\n\u003c!--nl--\"\u003e\u003cp\u003eBMW N53\u003c\/p\u003e\n\n\u003cp\u003eBMW N54\u003c\/p\u003e\n\n\u003cp\u003eBMW N55\u003c\/p\u003e\n\n\u003cp\u003eBMW S55\u003c\/p\u003e\n\n\u003cp\u003eManufacturer: SuperTech\u003c\/p\u003e\n\n\u003cp\u003eSKU: ST-SPRK-FE20N54-BE\u003cbr\u003e\nThese images are representative; actual product images may vary.\u003c\/p\u003e","brand":"SuperTech","offers":[{"title":"Default Title","offer_id":56969239757140,"sku":"ST-SPRK-FE20N54-BE","price":1200.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1027\/4701\/3460\/files\/ST-SPRK-FE20N54-BE_8a13dc55-8a9b-41eb-a466-b8837e690afc.jpg?v=1788719887","url":"https:\/\/www.thetunerlab.com\/en\/products\/kit-de-muelles-de-valvula-conicos-de-alto-rendimiento-con-retenedores-de-acero-supertech-para-bmw-n54-turbo","provider":"Thetunerlab","version":"1.0","type":"link"}