{"product_id":"forged-carbon-pulley-wheels-for-shimano-ultegra-durace-11s","title":"Forged Carbon Pulley Wheels for Shimano Ultegra \/ Durace 11s","description":"\u003cp\u003eOur Forged Carbon Pulley Wheels are Developed in collaboration with Gemini. They combine the lightweight and stiff construction from the forged carbon with Bikone’s bearing expertise.\u003c\/p\u003e\n\u003cp\u003eThe narrow-wide tooth profile alternates narrow and wide teeth to keep the chain securely guided, supporting precise and quiet shifting.\u003c\/p\u003e\n\u003cp\u003eAt the core of each pulley is a Bikone ABEC 7 ceramic bearing, with stainless-steel races and ceramic balls, specifically configured for its position in the derailleur.\u003c\/p\u003e\n\u003cp\u003eBoth bearings are protected by dust covers with a labyrinth seal system, helping keep out water and dust for longer bearing life.\u003c\/p\u003e\n\u003cp\u003eDesigned to work with the current rear derailleur configuration.\u003c\/p\u003e\n\u003cp\u003eIncluded in the box\u003cbr\u003e2x Forged Carbon Pulley wheels for Shimano Ultegra \/ Durace 11s\u003cbr\u003eSpeed Grease for Ceramic Bearings (3 ml)\u003cbr\u003ex2 Titanium screws\u003c\/p\u003e\n\u003cp\u003eWeight: 22.2 g\u003c\/p\u003e\n\u003cp\u003eCharacteristics:\u003cbr\u003e· In collaboration with Gemini. We combine Gemini's expertise in forged carbon manufacturing and finishing with Bikone's experience in high-performance bearing development.\u003cbr\u003e· Bikone ceramic bearings. Specifically developed for pulley wheels with a focus on maximum smoothness at high rotational speeds without sacrificing durability. ABEC 7 precision, stainless-steel races and ceramic balls.\u003cbr\u003e· A specific bearing for each pulley. Upper and lower pulleys perform different functions within the rear derailleur, so each uses a bearing developed for its specific position.\u003cbr\u003e· Dust covers with a labyrinth sealing system. Designed to prevent water and dust from entering the bearing\u003cbr\u003e· Low-friction silicone bearing seals. They provide effective sealing while maintaining smooth rotation.\u003cbr\u003e· High speed and low-friction grease. With detergent additives that promote a self-cleaning effect, removing degraded grease from the bearing. Protection and long-lasting properties of a grease, but with an oil-like friction.\u003cbr\u003e· Re-greasable. A sample of the grease is included in the box.\u003cbr\u003e· Larger diameter for a smoother drivetrain. The largest size compatible with the derailleur. Reduces chain articulation, helping to lower friction without modifying the cage or compromising shifting performance.\u003cbr\u003e· Narrow-wide tooth system. An alternating narrow-wide tooth design, combined with an asymmetric tooth profile, guides the chain and keeps it engaged with the pulley wheel. The result is controlled chain movement for quiet and precise shifting.\u003cbr\u003e· Aero profile. It's design maintains a low weight and improves airflow. Both the chain-contact profile and the bearing interface have been designed to interact aerodynamically with the surrounding components.\u003c\/p\u003e\n\u003cp\u003eCompatibility\u003cbr\u003eCarbon Pulley wheels for Shimano Ultegra \/ Durace 11s \u003cbr\u003ePulley wheels 12T (Upper) - 14T (Lower) compatible with current rear derailleur.\u003c\/p\u003e","brand":"Bikone","offers":[{"title":"Default Title","offer_id":55054445609303,"sku":"35010466001603","price":199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/2759\/3694\/files\/35010466001603_PL0_SET_1.jpg?v=1789675328","url":"https:\/\/b2b.mountainsports-distribution.com\/en-de\/products\/forged-carbon-pulley-wheels-for-shimano-ultegra-durace-11s","provider":"B2B-mountainsports distribution","version":"1.0","type":"link"}