{"title":"Polaris RZR XP Turbo, RS1, XP1000 Head packages","description":"\u003cspan data-mce-fragment=\"1\"\u003eBoost your Polaris RZR's performance with our premium engine modifications and parts. From high-flow air filters to performance exhaust systems and fuel injectors, we offer a comprehensive range of upgrades to unleash the full potential of your RZR off-road beast. Experience increased horsepower, improved torque, and enhanced throttle response. Explore our selection now and take your RZR's engine performance to new heights!\u003c\/span\u003e","products":[{"product_id":"stage-1-xp-turbo-head","title":"Stage 2 RZR Head","description":"\u003cdiv class=\"group w-full text-gray-800 dark:text-gray-100 border-b border-black\/10 dark:border-gray-900\/50 bg-gray-50 dark:bg-[#444654]\"\u003e\n\u003cdiv class=\"flex p-4 gap-4 text-base md:gap-6 md:max-w-2xl lg:max-w-[38rem] xl:max-w-3xl md:py-6 lg:px-0 m-auto\"\u003e\n\u003cdiv class=\"relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]\"\u003e\n\u003cdiv class=\"flex flex-grow flex-col gap-3\"\u003e\n\u003cdiv class=\"min-h-[20px] flex items-start overflow-x-auto whitespace-pre-wrap break-words flex-col gap-4\"\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\u003cp\u003eStage 2 \/ OEM PLUS\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eREQUIRES CORE CYLINDER HEAD\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Bronze valve guides honed to precise tolerances\u003c\/p\u003e\n\u003cp\u003e- Performance Newen 5-Angle\/Radius Valve seat profiles \u003c\/p\u003e\n\u003cp\u003e- Surfaced to single digit Ra's \u003c\/p\u003e\n\u003cp\u003e- Assembled and blueprinted  \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003e\u003cspan style=\"text-decoration: underline;\"\u003eHardware Included:\u003c\/span\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- BC Intake and Exhaust (inconel) Valves \u003c\/p\u003e\n\u003cp\u003e- BC Beehive Spring kit with chromoly retainers\u003c\/p\u003e\n\u003cp\u003e- New Valve Seals \u003c\/p\u003e\n\u003cp\u003e- New Valve Locks \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Perfect Circle Engines","offers":[{"title":"Customer uses old cam and lifter cores","offer_id":42703279915201,"sku":"","price":1199.0,"currency_code":"USD","in_stock":true},{"title":"RUNBC Stage 2 Cam Kit with New Lifter Buckets","offer_id":42703279947969,"sku":"","price":1899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/9656\/3905\/files\/IMG_6347.jpg?v=1688346602"},{"product_id":"stage-2-xp-turbo-head","title":"Stage 3 RZR Head","description":"\u003cp\u003eStage 3 Ported Head \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eREQUIRES CORE CYLINDER HEAD\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e-CNC Ported Runners                                                                                                                                                                                                                                                                                      - Bronze valve guides honed to precise tolerances\u003c\/p\u003e\n\u003cp\u003e- Performance Newen 5-Angle\/Radius Valve seat profiles \u003c\/p\u003e\n\u003cp\u003e- Surfaced to single digit Ra's \u003c\/p\u003e\n\u003cp\u003e- Assembled and blueprinted  \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003e\u003cspan style=\"text-decoration: underline;\"\u003eHardware Included:\u003c\/span\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- BC Intake and Exhaust (inconel) Valves \u003c\/p\u003e\n\u003cp\u003e- BC Beehive Spring kit with chromoly retainers\u003c\/p\u003e\n\u003cp\u003e- New Valve Seals \u003c\/p\u003e\n\u003cp\u003e- New Valve Locks \u003c\/p\u003e","brand":"Perfect Circle Engines","offers":[{"title":"Customer Uses old cam and lifter cores","offer_id":42703482388673,"sku":"","price":1699.0,"currency_code":"USD","in_stock":true},{"title":"RUNBC Stage 2+ Cam kit with New Lifter Buckets","offer_id":42703482421441,"sku":"","price":2450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/9656\/3905\/files\/IMG_2145.jpg?v=1688352442"},{"product_id":"stage-3-xp-turbo-head","title":"Stage 4 RZR Head","description":"\u003cp\u003eStage 4 Big Valve  \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eREQUIRES CORE CYLINDER HEAD\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e-CNC Ported Runners \u0026amp; Chambers                                                                                                                                                                                                                                                                  -Bronze valve guides honed to precise tolerances\u003c\/p\u003e\n\u003cp\u003e- Performance Newen 5-Angle\/Radius Valve seat profiles \u003c\/p\u003e\n\u003cp\u003e- Surfaced to single digit Ra's \u003c\/p\u003e\n\u003cp\u003e- Assembled and blueprinted  \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003e\u003cspan style=\"text-decoration: underline;\"\u003eHardware Included:\u003c\/span\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- BC Intake and Exhaust (inconel) Valves \u003c\/p\u003e\n\u003cp\u003e- BC Beehive Spring kit with chromoly retainers\u003c\/p\u003e\n\u003cp\u003e- New Valve Seals \u003c\/p\u003e\n\u003cp\u003e- New Valve Locks \u003c\/p\u003e","brand":"Perfect Circle Engines","offers":[{"title":"Customer Uses old cam and lifter cores","offer_id":42703489532097,"sku":null,"price":2199.0,"currency_code":"USD","in_stock":true},{"title":"RUNBC Stage 3 Cam kit with New Lifter Buckets","offer_id":42703489564865,"sku":null,"price":2899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/9656\/3905\/files\/IMG_2145_e2716ac4-853c-4031-a3dd-e6d6865b3c35.jpg?v=1688352642"},{"product_id":"stage-5-xp-turbo-head","title":"Stage 5 RZR Head","description":"\u003cp\u003eIntroducing the Stage 5 Head: Unleash the Ultimate Power Upgrade!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\" mce-data-marked=\"1\"\u003eREQUIRES CORE CYLINDER HEAD \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUpgrade your engine with our Stage 5 Head, meticulously crafted to deliver unparalleled performance. This is a serious upgrade from the Stage 4, designed for maximum power in aftermarket turbo\/ high-boost applications exceeding 45psi. Prepare to experience a new level of dominance on the track or strip.\u003c\/p\u003e\n\u003cp\u003eBuilding upon the exceptional specifications of our Stage 4 head, the Stage 5 Head takes power to the extreme. With precision CNC ported runners and chambers, this head ensures optimal airflow dynamics, pushing the boundaries of top-end performance.\u003c\/p\u003e\n\u003cp\u003eThe Stage 5 Head goes beyond just airflow. It includes upgraded valve stems and valve springs specifically designed to handle the intense demands of max boost levels over 45psi. This racing head is engineered to provide the ultimate power upgrade for the most aggressive applications.\u003c\/p\u003e\n\u003cp\u003eIn addition, the Stage 5 Head package includes the machining and utilization of our exclusive perimeter dowel pinning, providing enhanced stability and alignment. Furthermore, it is machined to accommodate o-rings, ensuring superior head gasket sealing and minimizing any potential leaks.\u003c\/p\u003e\n\u003cp\u003ePlease note that due to the nature of the Stage 5 RZR Head as a racing-focused component, no warranty is offered. This is a product designed for those seeking the pinnacle of performance and are willing to push the limits of their engine.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Perfect Circle Engines","offers":[{"title":"Customer Uses Supplied Cam\/ Lifters.","offer_id":42703539536065,"sku":null,"price":3499.0,"currency_code":"USD","in_stock":true},{"title":"RUNBC Custom Spec Cam kit with New DLC Lifter Buckets","offer_id":42703539568833,"sku":"","price":4399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/9656\/3905\/files\/IMG_2146_c0d396de-b737-42a7-8b79-829c9d2f39eb.jpg?v=1688356217"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/9656\/3905\/collections\/IMG_6347.jpg?v=1688351345","url":"https:\/\/perfectcircleengines.com\/collections\/polaris-rzr-xp-turbo-rs1-xp1000-head-packages.oembed","provider":"Perfect Circle Engines","version":"1.0","type":"link"}