{"product_id":"polaris-rzr-pro-r-head-shim-kit-evolution-powersports","title":"Polaris RZR Pro R Head Shim Kit","description":"\u003cp\u003eEVP engineers designed and manufactured the ultimate game-changer when it comes to lowering compression for the RZR Pro R. Stock compression ratio on the N\/A ProStar 2.0L engine runs high at 12.5:1, which is inadequate for any turbo upgrade\/engine build running high boost and big horsepower. The new EVP Head Shim Kit for Pro R's lowers compression to 10.8:1 to help reduce air\/fuel temperatures and thus prevent detonation as well as pre-ignition.\u003c\/p\u003e \u003cp\u003eFeatures:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eLowers stock compression ratio from 12.5:1 to 10.8:1 to better support high boost\/horsepower applications\u003c\/li\u003e \u003cli\u003eMulti-layer steel construction designed for optimal sealing\u003c\/li\u003e \u003cli\u003eFull metal construction leaves no residue behind\u003c\/li\u003e \u003cli\u003eExtremely durable under high temperatures and boost pressure\u003c\/li\u003e \u003cli\u003eKit includes RZR Pro R Shimmed head Gasket, Manifold Spacer and Valve Spacer\u003c\/li\u003e \u003c\/ul\u003e \u003ch6\u003eVEHICLE FITMENT\u003c\/h6\u003e \u003cp\u003ePolaris RZR Pro R\u003c\/p\u003e \u003c!----\u003e","brand":"Evolution Powersports","offers":[{"title":"Default Title","offer_id":48176052306157,"sku":"604FP0078","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/4643\/9149\/files\/604FP0078_tt_1_1024x1024_2x_8c8874f4-5dd3-467c-ab30-0059ebad91fb.jpg?v=1749059506","url":"https:\/\/tkoffroad.myshopify.com\/products\/polaris-rzr-pro-r-head-shim-kit-evolution-powersports","provider":"TeamKustom","version":"1.0","type":"link"}