{"product_id":"kogel-kolossos-derailleur-cage-for-shimano-grx-rx810-ultegra-rx800-gravel","title":"Kogel Kolossos Derailleur Cage for Shimano GRX RX810 \/ Ultegra RX800 – Gravel","description":"\u003cp\u003e\u003cspan style=\"color:#ff2a00;\"\u003e\u003cstrong\u003eDelivery in 4-5 business days (Europe)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eBigger is faster. Large derailleur pulleys cause less chain deflection and slower rotation of the ceramic bearings. Both lead to less friction and more efficient power transfer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMain advantages\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReduced friction while maintaining shifting accuracy\u003c\/li\u003e\n\u003cli\u003eKolossos is 3x stiffer than competing products and 2x stiffer than the original pulley cage on your derailleur\u003c\/li\u003e\n\u003cli\u003eLong tooth profile on the lower pulley for better chain grip\u003c\/li\u003e\n\u003cli\u003eCeramic bearings in the pulleys for even lower friction\u003c\/li\u003e\n\u003cli\u003eChoice of three colour options\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Shimano GRX (RD-RX810) and Ultegra RX800 gravel derailleurs, mechanical and Di2. This cage also fits the GRX 1x derailleur (RD-RX812) and allows shifting across the full 11-42 cassette range, but leaves a large gap between the top pulley and the smaller cogs, so expect less snappy shifting in the last three gears. Pulleys: 12 teeth (upper) and 19 teeth (lower).\u003c\/p\u003e","brand":"Kogel","offers":[{"title":"Black","offer_id":57697988804932,"sku":"KOLSPRX800R-BLACK","price":379.99,"currency_code":"EUR","in_stock":true},{"title":"Red","offer_id":57697988837700,"sku":"KOLSPRX800R-RED","price":379.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0007\/4596\/3564\/files\/shimano-oversized-derailleur-cage-grx-2x-and-ultegra-rx800-black-783.webp?v=1794409084","url":"https:\/\/cigalacycling.de\/es\/products\/kogel-kolossos-derailleur-cage-for-shimano-grx-rx810-ultegra-rx800-gravel","provider":"Cigala Cycling Retail","version":"1.0","type":"link"}