{"product_id":"ceramicspeed-ospw-x-pulley-wheel-system-for-shimano-grx-rx-820-2x12-drivetrain","title":"CeramicSpeed OSPW X Pulley Wheel System for Shimano GRX RX-820 2x12 Drivetrain","description":"\u003cp\u003eThe CeramicSpeed OSPW X for Shimano GRX RX-820 2x12 is a high-performance component system designed specifically for gravel and cyclocross disciplines. Proven in demanding races like Paris-Roubaix and Strade Bianche, this pulley wheel system enhances your drivetrain with exceptional durability and significantly reduced friction. Built to meet the rigorous demands of off-road riding, it offers riders a smooth, efficient transmission that extends component life and maximizes power transfer.\u003c\/p\u003e\n\n\u003cp\u003eThis system features a 13-tooth upper and 19-tooth lower pulley wheel, housed in a custom molded carbon fibre cage that balances lightweight design with robust durability. The four different spring tension settings allow you to fine-tune the system to your specific riding conditions, ensuring optimal performance whether you’re tackling rough terrain or fast gravel stretches. Compatible with Shimano’s 2x specific RX820 and RX825 derailleurs, it also supports 1x setups with a maximum 36T cassette.\u003c\/p\u003e\n\n\u003cp\u003eWith the CeramicSpeed OSPW System, you will experience a remarkable 35-40% reduction in friction compared to stock pulley configurations, translating into smoother shifting and increased drivetrain efficiency. The package includes CeramicSpeed oil for pulley wheel bearings, ensuring long-lasting lubrication and maintenance ease. Note that only the high (H) spring tension setting should be used with the RX 825 Di2 derailleur to guarantee optimal function.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eImproving drivetrain efficiency by reducing friction by up to 40%\u003c\/li\u003e\n  \u003cli\u003eEnhancing durability and longevity of your derailleur system under demanding gravel and cross conditions\u003c\/li\u003e\n  \u003cli\u003eCustomizable spring tension settings to adapt to variable terrain and riding styles\u003c\/li\u003e\n  \u003cli\u003eLightweight construction with carbon fibre cage for minimal added weight\u003c\/li\u003e\n  \u003cli\u003eCompatibility with Shimano GRX RX820 and RX825 2x12 derailleurs, plus 1x setups with up to 36T cassette\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse with derailleurs other than Shimano GRX RX820 or RX825 may result in poor performance or incompatibility\u003c\/li\u003e\n  \u003cli\u003eNot suitable for 1x setups with cassette sizes larger than 36T\u003c\/li\u003e\n  \u003cli\u003eSpring tension settings other than high (H) are not recommended for RX 825 Di2 derailleur\u003c\/li\u003e\n  \u003cli\u003eNot intended for road race-only setups where lightweight and aerodynamic considerations differ\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the CeramicSpeed OSPW X with Shimano GRX RX825 Di2?\u003c\/strong\u003e\u003cbr\u003eYes, it is compatible, but you must use only the high (H) spring tension hole for optimal performance with the RX 825 Di2 derailleur.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this system compatible with 1x drivetrains?\u003c\/strong\u003e\u003cbr\u003eYes, but only with cassette sizes up to 36T. For larger cassettes, this system is not recommended.\u003c\/p\u003e","brand":"CeramicSpeed","offers":[{"title":"Black","offer_id":45966727151791,"sku":"113777","price":439.99,"currency_code":"GBP","in_stock":true},{"title":"Red","offer_id":45966727184559,"sku":"113778","price":439.99,"currency_code":"GBP","in_stock":false},{"title":"Gold","offer_id":45966727217327,"sku":"113779","price":439.99,"currency_code":"GBP","in_stock":false},{"title":"Blue","offer_id":45966727250095,"sku":"113780","price":373.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/113777_113781.jpg?v=1768531832","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/ceramicspeed-ospw-x-pulley-wheel-system-for-shimano-grx-rx-820-2x12-drivetrain","provider":"Swinnerton Cycles","version":"1.0","type":"link"}