{"product_id":"prox-exhaust-valve-and-spring-conversion-kit-28-ses4409-1-for-kawasaki-kx450f-2009-2018","title":"ProX Exhaust Valve and Spring Conversion Kit 28.SES4409-1 for Kawasaki KX450F 2009-2018","description":"Latest addition to the ProX program is the Exhaust Valve \u0026amp; Spring Kits. This kit is offered as an alternative where the OEM application uses Titanium valves. ProX has now developed the Exhaust Valve \u0026amp; Spring Kits, containing a set of steel intake or exhaust valves plus a set of specially designed stronger valve springs. The ProX kit just replaces the OEM valves \u0026amp; valve springs and can be installed using the OEM retainers, bases and valve seals.\n\u003cp\u003eThe ProX Exhaust Valve and Spring Conversion Kit, manufacturer part number 28.SES4409-1 and vendor part number 19-9516, provides a durable steel-valve replacement for Kawasaki KX450F models that originally use titanium exhaust valves. This complete conversion set is designed for 2009 through 2018 Kawasaki KX450F applications and includes steel exhaust valves with specially developed stronger valve springs.\u003c\/p\u003e\u003cp\u003eNitrided steel valves offer increased microhardness and a smooth surface finish to help reduce friction between the valve stem and guide. The stronger springs are manufactured from premium chrome vanadium steel to accommodate the additional weight of steel valves while supporting reliable performance during high-RPM operation. This design helps improve durability and reduce wear under demanding riding and racing conditions.\u003c\/p\u003e\u003cp\u003eThe ProX kit is designed to replace the original equipment valves and valve springs while retaining the OEM retainers, spring bases, and valve seals. No additional engine modifications are required, making the kit suitable for a straightforward, cost-efficient top-end service. It is supplied as a complete package for quick installation and dependable exhaust-valve replacement.\u003c\/p\u003e\u003cp\u003eFitment includes the 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, and 2018 Kawasaki KX450F. Confirm engine application and existing OEM components before installation to ensure proper compatibility.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDurable steel exhaust valves designed as an alternative to OEM titanium valves\u003c\/li\u003e\n\u003cli\u003eNitrided valve surfaces provide high microhardness and reduced friction between the valve stem and guide\u003c\/li\u003e\n\u003cli\u003eSpecially designed stronger valve springs compensate for the additional weight of steel valves\u003c\/li\u003e\n\u003cli\u003ePremium chrome vanadium steel springs support durability and performance at high RPMs\u003c\/li\u003e\n\u003cli\u003eInstalls using OEM retainers, spring bases, and valve seals without additional engine modifications\u003c\/li\u003e\n\u003cli\u003eComplete valve and spring package for efficient replacement and engine rebuilding\u003c\/li\u003e\n\u003cli\u003eFits Kawasaki KX450F models from 2009 through 2018\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2009 Kawasaki KX450F\u003cbr\u003e\n2010 Kawasaki KX450F\u003cbr\u003e\n2011 Kawasaki KX450F\u003cbr\u003e\n2012 Kawasaki KX450F\u003cbr\u003e\n2013 Kawasaki KX450F\u003cbr\u003e\n2014 Kawasaki KX450F\u003cbr\u003e\n2015 Kawasaki KX450F\u003cbr\u003e\n2016 Kawasaki KX450F\u003cbr\u003e\n2017 Kawasaki KX450F\u003cbr\u003e\n2018 Kawasaki KX450F","brand":"PROX","offers":[{"title":"Default Title","offer_id":67555806347499,"sku":"19-9516","price":156.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/8b74-572a590e6f9c7.jpg?v=1790744617","url":"https:\/\/ctracingservices.com\/products\/prox-exhaust-valve-and-spring-conversion-kit-28-ses4409-1-for-kawasaki-kx450f-2009-2018","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}