{"product_id":"steel-exhaust-valve-spring-kit-yz-wr450f-03-09-yfz450-04-09","title":"Steel Exhaust Valve-spring Kit Yz-wr450f '03-09-yfz450 '04-09","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.","brand":"Prox","offers":[{"title":"Default Title","offer_id":35718616416406,"sku":"w-19-9543","price":135.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0455\/4348\/9686\/products\/WP19-9543.jpg?v=1597142994","url":"https:\/\/powersportsexpress.myshopify.com\/products\/steel-exhaust-valve-spring-kit-yz-wr450f-03-09-yfz450-04-09","provider":"FMBox Powersports","version":"1.0","type":"link"}