{"product_id":"prox-28-ses3338-1-steel-exhaust-valve-spring-kit-suzuki-rmz250-moto-house-mx","title":"ProX Steel Exhaust Valve and Spring Kit 28.SES3338-1 — Suzuki RMZ250 2007-2025","description":"\u003ch1\u003e\u003cstrong\u003eProX Exhaust Valve and Spring Kit 28.SES3338-1 — Suzuki RMZ250 2007-2025\u003c\/strong\u003e\u003c\/h1\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eProX Exhaust Valve and Spring Kit\u003c\/strong\u003e is the ultimate solution for riders looking to enhance engine reliability and longevity. Designed to directly replace your OEM components, this kit provides a superior alternative for the high-stress environment of your Suzuki RMZ250’s cylinder head. By utilizing high-quality steel, this kit ensures your bike maintains peak performance through the most demanding riding conditions.\u003c\/p\u003e\n\u003cp\u003eThese \u003cstrong\u003enitrided steel valves\u003c\/strong\u003e are engineered for increased durability and significantly reduced wear compared to stock alternatives. Because steel valves carry more mass than titanium, this kit includes \u003cstrong\u003especially designed valve springs\u003c\/strong\u003e manufactured from premium chrome vanadium steel, ensuring consistent valve timing and preventing float at high RPMs. Best of all, these kits are designed to be installed using your existing OEM retainers, bases, and seals for a straightforward, professional-grade rebuild.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: ProX Exhaust Valve and Spring Kit\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNitrided steel construction for superior wear resistance and durability\u003c\/li\u003e\n  \u003cli\u003eIncludes high-performance chrome vanadium steel valve springs\u003c\/li\u003e\n  \u003cli\u003eCorrects valvetrain mass for high-RPM stability\u003c\/li\u003e\n  \u003cli\u003eDirect OEM replacement for easy installation\u003c\/li\u003e\n  \u003cli\u003eCompatible with factory retainers, bases, and seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eFitment List\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; margin-top: 15px; margin-bottom: 15px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2007-2025\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eSuzuki\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eRMZ250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose steel valves over the stock titanium ones?\u003c\/strong\u003e\u003cbr\u003e\nA: Steel valves offer significantly higher durability and a longer service life, especially in off-road racing or high-hour trail riding. While they are slightly heavier, our matching spring kit compensates for this to ensure perfect operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to buy new valve retainers for this kit?\u003c\/strong\u003e\u003cbr\u003e\nA: No, these ProX kits are specifically engineered to work perfectly with your bike's existing OEM retainers, bases, and seals, keeping your rebuild costs down.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e Always check your valve clearances after the first hour of break-in following a valve job. Steel valves will \"seat\" into the head slightly as they wear in, which can tighten your clearances. Catching this early prevents premature wear and ensures your engine stays strong all season.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRecommended Pairings:\u003c\/strong\u003e\u003cbr\u003e\no \u003ca href=\"https:\/\/motohousemx.com\/collections\/suzuki-rm-z250-performance-parts-and-accessories-moto-house-mx\"\u003eSuzuki RM-Z250 Performance Parts \u0026amp; Upgrades\u003c\/a\u003e\u003cbr\u003e\no \u003ca href=\"https:\/\/motohousemx.com\/collections\/premium-motorcycle-chemicals-brake-fluid-bike-wash-coolant-chain-lubes\"\u003ePremium Motorcycle Chemicals\u003c\/a\u003e\u003cbr\u003e\no \u003ca href=\"https:\/\/motohousemx.com\/collections\/mx-off-road-motorcycle-tools\"\u003eEssential Motorcycle Shop Tools\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAbout Moto-House MX\u003c\/h2\u003e\n\u003cp\u003eAt Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMoto-House MX – Choice of Champions\u003c\/strong\u003e – Clermont \/ Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"ProX Exhaust Valve and Spring Kit 28.SES3338-1\",\n  \"brand\": \"ProX\",\n  \"mpn\": \"28.SES3338-1\",\n  \"description\": \"High-durability nitrided steel exhaust valve and spring kit for Suzuki RMZ250, designed for increased longevity and high-RPM performance.\"\n}\n\u003c\/script\u003e","brand":"Pro-X","offers":[{"title":"Default Title","offer_id":39694720335955,"sku":"28.SES3338-1","price":154.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/pro-x-exhaust-valve-conversion-set-ti-steel-suzuki-rm-z250-07-2021-28ses3338-1-408869.jpg?v=1735459706","url":"https:\/\/motohousemx.com\/products\/prox-28-ses3338-1-steel-exhaust-valve-spring-kit-suzuki-rmz250-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}