{"product_id":"735201957050","title":"Kogel Kolossos OSPW 12\/19T for Shimano R9100\/R8000, SS\/GS, Ceramic, Black","description":"\u003ch3\u003eDetailed Specifications\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 w\/ inner 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 ceramic bearings\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eCompatibility (derailleurs):\u003c\/strong\u003e Shimano Dura-Ace R9100\/R9150 and Ultegra R8000\/R8050, mechanical \u0026amp; Di2; fits SS (short) and GS (mid) cage right out of the box\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eSpeeds:\u003c\/strong\u003e Designed for 11-speed R9100\/R8000 series road groups\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eUse:\u003c\/strong\u003e Road, crit, tri\/TT; suitable for on-road and off-road use\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eMaterials \/ Build:\u003c\/strong\u003e Oversized cage with ceramic pulley bearings, road seal configuration for low drag\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e Outer + inner cage assembly, 12T upper pulley, 19T lower pulley, 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\u003eAdditional Features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\t\u003cp\u003eExtremely low friction plus high cage stiffness for precise, loss-free shifting\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eLong-tooth 19T lower pulley improves chain retention, especially over rough terrain\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eBuilt-in chain catcher on the lower pulley helps prevent chain jams\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eShips compatible with both SS and GS derailleurs—no extra parts needed\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eCeramic bearings and road seals balance speed with durability for racing and training\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003eImportant Usage Notes\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\t\u003cp\u003eShimano-only fit for the R9100\/R8000 family (11-speed). Not compatible with R9200\/R8100 or SRAM\/Campagnolo derailleurs\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eInstallation should follow Kogel’s torque and alignment instructions for best performance and bearing life\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eCheck chain length and B-tension after installation; oversized pulleys typically require adjustment\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003cli\u003e\n\t\u003cp\u003eUse with a clean, well-lubricated chain to maximize efficiency and bearing longevity\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003eRiding Impressions\u003c\/h3\u003e\n\n\u003cp\u003eSwitching to 12\/19T ceramic pulleys reduces drivetrain friction and delivers smoother, quieter shifts—especially under load. The stiff cage combined with the long-tooth lower pulley keeps the chain stable in sprints, sharp corners, and over rough road sections. Riders report a “free-speed” effect, with more confidence in shifting precision during hard efforts.\u003c\/p\u003e\n\n\u003chr\u003e\n\u003ch3\u003eDisclosure\u003c\/h3\u003e\n\n\u003cp\u003eGenuine Kogel product, retail packaged, sourced through authorized distribution. Includes Kolossos inner and outer cage assembly with 12T\/19T ceramic pulleys for Shimano R9100\/R8000 series. Derailleur, chain, cassette, and tools are not included. Covered under Kogel’s lifetime limited warranty (proof of purchase required).\u003c\/p\u003e","brand":"Kogel","offers":[{"title":"Default","offer_id":47142285115604,"sku":"735201957050","price":199.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/7262\/2036\/files\/735201957050-01_1.jpg?v=1761094587","url":"https:\/\/outlet.wheelandsprocket.com\/products\/735201957050","provider":"Wheel \u0026 Sprocket - Outlet","version":"1.0","type":"link"}