{"product_id":"kkcagerx800","title":"Kogel Kolossos OSPW 12\/19T for Shimano RX800 GRX 2x, Ceramic Bearings, Oversized Derailleur Cage","description":"\u003cdiv style=\"border: 1px solid #e9ecef; padding: 24px;\"\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Kogel Bearings\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e Kolossos Oversized Derailleur Cage (OSPW)\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003ePulley Sizes:\u003c\/strong\u003e 12T upper \/ 19T lower, with precision ceramic bearings\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eCompatibility (Derailleurs):\u003c\/strong\u003e Shimano GRX RX800\/RX810 and Ultegra RX800 series (mechanical \u0026amp; Di2), designed for 2x road and gravel drivetrains\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eDrivetrain Speeds:\u003c\/strong\u003e 11-speed and 12-speed 2x GRX drivetrains\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eNot For:\u003c\/strong\u003e GRX 1x setups — use the dedicated GRX 12-speed 1x Kolossos model instead\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eIntended Use:\u003c\/strong\u003e Gravel \/ Cyclocross \/ Endurance Road \/ All-Road\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eMaterials \/ Build:\u003c\/strong\u003e Oversized aluminum cage with ceramic bearing pulleys and reinforced inner cage for stiffness\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eColor Options:\u003c\/strong\u003e Black, Red, or Gold\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e Outer and inner cage assembly, 12T upper pulley, 19T lower pulley, mounting hardware\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e Kogel Lifetime Limited Warranty\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eAdditional Features\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eReduced Friction:\u003c\/strong\u003e Oversized ceramic pulley system significantly decreases drivetrain drag, ideal for clutch-style derailleurs used in gravel and cyclocross.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003e2x-Specific Design:\u003c\/strong\u003e Optimized for Shimano GRX 2x drivetrains for smooth front shifting and consistent chain tension across chainrings.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eEnhanced Chain Retention:\u003c\/strong\u003e Long-tooth 19T lower pulley improves stability and prevents dropped chains on rough terrain.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eChain Catcher Integration:\u003c\/strong\u003e Built-in chain catcher minimizes risk of jams and chain derailments.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eGravel-Proof Construction:\u003c\/strong\u003e Engineered with stiffness and precision to handle off-road conditions without sacrificing shifting accuracy.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003ePerformance Efficiency:\u003c\/strong\u003e Delivers “free watts” by reducing drivetrain losses, translating into smoother pedaling and faster speeds over long rides.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eImportant Usage Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\t\u003cp\u003eCompatible with \u003cstrong\u003eShimano GRX RX800\/RX810 and Ultegra RX800 series\u003c\/strong\u003e derailleurs in \u003cstrong\u003e2x configurations\u003c\/strong\u003e (11- or 12-speed).\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eNot compatible\u003c\/strong\u003e with GRX 1x setups — use the Kogel GRX 1x Kolossos instead.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eInstalling this OSPW system usually requires a \u003cstrong\u003elonger chain\u003c\/strong\u003e for correct wrap on 2x drivetrains.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eAdjust \u003cstrong\u003eB-tension\u003c\/strong\u003e and confirm chain length for optimal performance and shifting precision.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eMaintain regular \u003cstrong\u003echain cleaning and lubrication\u003c\/strong\u003e for best efficiency and bearing longevity.\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRiding Impressions\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKogel Kolossos RX800 2x\u003c\/strong\u003e system transforms drivetrain performance with its oversized 12\/19T pulley configuration. The ceramic bearings reduce friction for noticeably smoother pedaling, while the stiff cage ensures crisp shifting even in harsh off-road conditions. Whether climbing gravel roads or racing endurance events, riders benefit from quieter operation, better efficiency, and improved chain control — all with signature Kogel durability.\u003c\/p\u003e\n\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eDisclosure\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThis listing includes the \u003cstrong\u003eKolossos oversized derailleur cage assembly\u003c\/strong\u003e with \u003cstrong\u003e12T\/19T ceramic pulleys\u003c\/strong\u003e and mounting hardware.\u003cbr\u003eDerailleur, chain, and cassette not included.\u003cbr\u003eGenuine Kogel Bearings product, \u003cstrong\u003eretail packaged\u003c\/strong\u003e with \u003cstrong\u003elifetime limited warranty\u003c\/strong\u003e (proof of purchase required).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Kogel","offers":[{"title":"Black","offer_id":47015883374804,"sku":"735201957081","price":199.95,"currency_code":"USD","in_stock":false},{"title":"Gold","offer_id":47015883407572,"sku":"735201957104","price":199.95,"currency_code":"USD","in_stock":false},{"title":"Red","offer_id":47015883440340,"sku":"735201957098","price":199.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/7262\/2036\/files\/735201957081-01.jpg?v=1760489189","url":"https:\/\/outlet.wheelandsprocket.com\/products\/kkcagerx800","provider":"Wheel \u0026 Sprocket - Outlet","version":"1.0","type":"link"}