{"product_id":"5150-5150-pro-xtreme-valves-bmw-m50-m52-s50-s52","title":"BMW M50 M52 S50 S52 Pro-Xtreme Valve Set | 5150 x Manley Performance","description":"\u003cp data-start=\"1582\" data-end=\"1975\"\u003eThe Pro-Xtreme Stainless Steel Valves from 5150 AutoSport, developed in collaboration with Manley Performance, are engineered for the most severe operating conditions in BMW M50, M52, S50 and S52 engines. These single-groove, high-strength stainless steel valves are designed exclusively with a \u003cstrong data-start=\"1877\" data-end=\"1890\"\u003e7 mm stem\u003c\/strong\u003e to withstand the demands of high-boost, nitrous-fed and high-revving race engines.\u003c\/p\u003e\n\u003cp data-start=\"1977\" data-end=\"2507\"\u003eWith dimensions of \u003cstrong data-start=\"1996\" data-end=\"2012\"\u003e34 mm intake\u003c\/strong\u003e and \u003cstrong data-start=\"2017\" data-end=\"2036\"\u003e31.5 mm exhaust\u003c\/strong\u003e, these valves match upgraded cylinder head workflows for the M50 M52 S50 S52 platform. The stainless steel alloy construction ensures \u003cstrong\u003eexceptional strength, fatigue resistance and durability under extreme combustion pressures and elevated temperatures.\u003c\/strong\u003e A precision back-cut design enhances airflow through the head, supporting greater volumetric efficiency and power potential. Hardened tips provide long-term wear resistance and maintain reliable sealing under stress.\u003c\/p\u003e\n\u003cp data-start=\"2509\" data-end=\"2896\"\u003eDuring our in-shop development on our E36 M3 \"Bully,\" we discovered that traditional 6 mm stem valves were failing in extreme duty applications—bending or deforming under high boost and anti-lag scenarios. By upgrading to a 7 mm stem and selecting a far superior material than factory spec, these Pro-Xtreme valves eliminate that weak-link and protect the valvetrain during aggressive builds.\u003c\/p\u003e\n\u003cp data-start=\"2898\" data-end=\"3226\"\u003e\u003cem\u003e\u003cstrong\u003eImportant fitment note:\u003c\/strong\u003e\u003c\/em\u003e These valves require new valve guides and a \u003cstrong data-start=\"2966\" data-end=\"2989\"\u003e7 mm valve spring kit\u003c\/strong\u003e when installed in M50 Non-Vanos, M52, S50 or S52 applications, available \u003ca href=\"https:\/\/5150autosport.com\/products\/bmw-m50-m52-s50-s52-pro-xtreme-valve-spring-kit?variant=50488735990067\"\u003ehere\u003c\/a\u003e. Designed for serious engine builds, they are ideal for drag racing, road racing, forced-induction and nitrous applications where valvetrain durability is mission-critical.\u003c\/p\u003e\n\u003cp data-start=\"2425\" data-end=\"2448\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2451\" data-end=\"2537\"\u003eSingle-groove stem design for secure keeper retention\u003c\/li\u003e\n\u003cli data-start=\"2540\" data-end=\"2606\"\u003e\n\u003cstrong\u003eStem sizes: \u003c\/strong\u003e7 mm\u003c\/li\u003e\n\u003cli data-start=\"2609\" data-end=\"2712\"\u003e\n\u003cstrong\u003eIntake diameter: \u003c\/strong\u003e34 mm\u003c\/li\u003e\n\u003cli data-start=\"2609\" data-end=\"2712\"\u003e\n\u003cstrong\u003eExhaust diameter: \u003c\/strong\u003e31.5 mm\u003c\/li\u003e\n\u003cli data-start=\"2715\" data-end=\"2875\"\u003eRace-grade \u003cstrong\u003estainless steel alloy construction\u003c\/strong\u003e for superior strength and fatigue resistance in high-RPM or boosted applications\u003c\/li\u003e\n\u003cli data-start=\"2878\" data-end=\"2963\"\u003eBack-cut under-head design to \u003cstrong\u003eimprove airflow\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2966\" data-end=\"3051\"\u003eHardened tips and precision finish for reduced wear and improved sealing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3053\" data-end=\"3419\"\u003e\u003cem\u003e\u003cstrong\u003eProfessional Installation is strongly recommended. \u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-start=\"344\" data-end=\"1528\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eBMW M50 M52 S50 S52 Pro-Xtreme Valve Set Contents: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"344\" data-end=\"1528\"\u003e(12) 34mm Intake Valves\u003c\/li\u003e\n\u003cli data-start=\"344\" data-end=\"1528\"\u003e(12) 31.5mm Exhaust Valves\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eSupplied in Egypt by iCode — the official 5150 AutoSport dealer.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cem\u003ePrice shown in EGP is an estimate at today's exchange rate. Final price confirmed after shipping and customs fees.\u003c\/em\u003e\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Valves Only","offer_id":68329787850951,"sku":"MAN-HPVK-M50-XT","price":81044.46,"currency_code":"EGP","in_stock":true},{"title":"Add Valve Locks","offer_id":68329787883719,"sku":"MAN-HPVK-M50-XT+L","price":89148.96,"currency_code":"EGP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/2108\/3847\/files\/BMWM50M52S50S52Pro-XtremeValveSetby5150AutoSport.webp?v=1794334009","url":"https:\/\/icode-egypt.com\/products\/5150-5150-pro-xtreme-valves-bmw-m50-m52-s50-s52","provider":"iCode - EG","version":"1.0","type":"link"}