{"product_id":"prox-28-sis2440-2-10-13-yz450f-steel-intake-valve-spring-kit","title":"ProX 28.SIS2440-2 - 10-13 YZ450F Steel Intake Valve\/Spring Kit","description":"\u003cp\u003eProX 28.SIS2440-2 - 10-13 YZ450F Steel Intake Valve\/Spring Kit\u003c\/p\u003e\u003cp\u003eProX Racing Parts Steel Intake Valve\/Spring Kit YZ450F '10-13.\u003c\/p\u003e\u003cp\u003eTitanium or steel valves? It is up to you! Fortunately OEM prices for the Titanium valves slowly decreased over the years to a level where it is reasonably priced now. Therefore ProX Racing Parts had to found a solution for their titanium valve pricing. Quality is very important to us, but it has it's price. We found a source, which makes it possible to decrease our titanium valve prices! The steel valves offer increased durability and easily extends 3 times the lifespan of the OEM Titanium valves. Due to the extra weight of the steel a heavier valve spring must be used! ProX has developed the Steel Intake and 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 juts replaces the OEM valves \u0026amp; valve springs and can be installed using the OEM retainers, bases and valve seats. Steel Valve \u0026amp; Spring Kit Features: - Steel valves for increased durability and less wear under extreme conditions - Nitrided valves offer high microhardness while supersmooth surface finish reduces friction between stem and guide - Special stronger valve springs deal with the extra weight of the steel valves - Spring are made from premium Chrome Vanadium Steel for higher performance and durability under high RPM - Fully rebuildable with OEM retainers, bases and seals without the need of any further engine modifications - Comes as complete package for quick, easy and cost efficient replacement\u003c\/p\u003e","brand":"ProX","offers":[{"title":"Default Title","offer_id":49944095785238,"sku":"PRX-28.SIS2440-2","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/0_861b43283b4806f2eabeaa746c0676b6_normalized.jpg?v=1776999859","url":"https:\/\/www.cspracing.com\/products\/prox-28-sis2440-2-10-13-yz450f-steel-intake-valve-spring-kit","provider":"Complete Street Performance","version":"1.0","type":"link"}