{"product_id":"brian-crower-b-bc0900d-2-b-polaris-pro-r-21-up-dual-spring-steel-retainer-seat-kit","title":"Polaris Pro-R (21-up) Dual Spring\/Steel Retainer\/Seat Kit","description":"\u003cp\u003eBrian Crower dual valve spring, steel retainer and seat kit for the Polaris RZR Pro R, built for high rpm and anti-lag. It works with stock buckets, with sizing based on the installed height of your valves.\u003c\/p\u003e\n\u003ch3\u003eWhy it holds up\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBC valve springs by PAC Racing, wound from clean chrome silicone alloy\u003c\/li\u003e\n\u003cli\u003eProprietary processing for consistent spring pressures\u003c\/li\u003e\n\u003cli\u003eRetainers machined from chromoly steel for set it and forget it wear\u003c\/li\u003e\n\u003cli\u003eBC1902 spring: 1.610 in free length, 90 lbs at 1.265 in seat, 233 lbs at 0.850 in open, 0.770 in coil bind\u003c\/li\u003e\n\u003cli\u003eBC2902 retainer, BC2912 spring seat, 0.450 in (11.43mm) net cam lift\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFits\u003c\/h3\u003e\u003cul\u003e\u003cli\u003ePolaris RZR Pro R (21-up)\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRequires BC3992 valve seals, sold separately.\u003c\/li\u003e\n\u003cli\u003eTo run the BC3992 seals, the OEM valve guides must be replaced with BC3966 guides.\u003c\/li\u003e\n\u003cli\u003eThe dual spring kit cannot use the OEM seat and seal. Use the seat that comes with the kit.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Brian Crower, Inc","offers":[{"title":"Default Title","offer_id":67822851489886,"sku":"BC0900D-2","price":750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/2406\/7678\/files\/image_dc123074-2a61-433e-b071-adb4c9bb6331.png?v=1792614971","url":"https:\/\/bonafidesxs.net\/products\/brian-crower-b-bc0900d-2-b-polaris-pro-r-21-up-dual-spring-steel-retainer-seat-kit","provider":"Bona Fide SXS","version":"1.0","type":"link"}