{"product_id":"nv-6179-bmw-s58-pro-xtreme-valve-valve-spring-kit","title":"BMW S58 Pro-Xtreme Valve \u0026 Valve Spring Kit","description":"\u003cdiv\u003e\n\u003cp\u003eSimplify your next S58 engine build with this all-in-one Competition Valve \u0026amp; Spring Kit, now available from 5150 AutoSport. Featuring Ferrea’s single groove stainless steel valves and a complete high-performance valve spring kit, this package eliminates the guesswork—giving engine builders a reliable, track-proven solution in a single click.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for Power. Engineered for RPM.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit includes standard-size Ferrea Competition Plus intake and exhaust valves (\u003cstrong\u003e30.1mm intake \/ 28.5mm exhaust\u003c\/strong\u003e) made from aerospace-grade EV8-Z18 material. These single groove valves are ideal for high-lift camshafts and sustained high-RPM use. Ferrea’s two-step slow forging and 48-hour heat treatment process ensures exceptional strength, heat resistance, and fatigue life—even under extreme boost or racing conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 Ferrea Single Groove Valves\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e30.1mm intake \/ 28.5mm exhaust\u003c\/li\u003e\n\u003cli\u003eAvionics-grade chrome-plated stems\u003c\/li\u003e\n\u003cli\u003eHardened tips for increased durability\u003c\/li\u003e\n\u003cli\u003eEV8-Z18 stainless for high temperature resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerrea Valve Spring Kit\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e24 premium chrome-silicon steel valve springs\u003c\/li\u003e\n\u003cli\u003e24 lightweight titanium retainers\u003c\/li\u003e\n\u003cli\u003e24 precision-fit valve spring seats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFerrea’s spring system is engineered to maintain valve control at high RPM, prevent float, and handle the increased load of aggressive cams and high boost. Lightweight titanium retainers reduce valvetrain mass and improve engine response, while the included spring seats ensure long-term reliability under high stress.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose This Kit:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne-click solution: No need to piece together components\u003c\/li\u003e\n\u003cli\u003eIdeal for high-RPM, high-lift camshaft builds\u003c\/li\u003e\n\u003cli\u003eSupports boosted, track, and motorsport applications\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the BMW S58 engine\u003c\/li\u003e\n\u003cli\u003eTrusted Ferrea quality backed by decades of motorsports experience\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRecommended for professional builds, high-performance street use, or full-race applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Note:\u003c\/strong\u003e\u003cbr\u003eProfessional installation by a qualified engine builder is strongly recommended to ensure optimal performance and reliability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch1\u003e \u003c\/h1\u003e\u003ch3\u003eAvailability and delivery\u003c\/h3\u003e\u003cp\u003eSupplied to order. Supplier availability is subject to confirmation. Shipping is calculated at checkout.\u003c\/p\u003e","brand":"NV Performance","offers":[{"title":"Default Title","offer_id":54985340911829,"sku":"NV-6179","price":56800.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0675\/9196\/2837\/files\/bmw-s58-valve-and-spring-kit.webp?v=1789884959","url":"https:\/\/montigenix.co.za\/products\/nv-6179-bmw-s58-pro-xtreme-valve-valve-spring-kit","provider":"MONTIGENIX","version":"1.0","type":"link"}