{"product_id":"ceramicspeed-ospw-rs-pulley-wheel-system-for-shimano-dura-ace-9250-ultegra-8150-pulleys-road-bike-cgas0065","title":"CeramicSpeed OSPW RS Pulley System for Shimano Dura-Ace R9250 \u0026 Ultegra R8150 - Aluminum \u0026 Carbon Fiber, Low-Friction Bearings, Premium 12-Speed Efficiency","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eUpgrade your Shimano Dura-Ace R9250 and Ultegra R8150 12-speed road bike with the CeramicSpeed OSPW RS Pulley Wheel System - a pinnacle of performance engineering and innovative design. Crafted with precision, this high-performance derailleur upgrade features a lightweight aluminum pulley and a rugged carbon cage, combining durability and weight savings for a superior riding experience.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-2\"\u003e\u003cp\u003eMaterials \u0026amp; Construction:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-3\"\u003e\u003cp\u003eBuilt with an injection-molded carbon fiber reinforced PA cage, the OSPW RS ensures exceptional strength, stiffness, and durability under demanding cycling conditions. The anodized aluminum 5-spoke 13-tooth upper pulley and 19-tooth lower pulley wheels are engineered for lightweight performance, reducing rotational mass to enhance acceleration and climbing efficiency.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-4\"\u003e\u003cp\u003ePerformance \u0026amp; Technology:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-5\"\u003e\u003cp\u003eEquipped with Grade 3 Silicon Nitride ball bearings, this system delivers approximately 400% smoother operation compared to standard steel balls, while being 128% harder and 58% lighter. The ultra-low friction bearings significantly improve derailleur efficiency, reducing power loss and enabling more responsive shifting. Additionally, the pulley system features four customizable spring tension settings, allowing riders to fine-tune for optimal performance and compatibility with your specific drivetrain setup.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-6\"\u003e\u003cp\u003eStyle \u0026amp; Use Case:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-7\"\u003e\u003cp\u003eDesigned with modern aesthetics in mind, the OSPW RS's angular, streamlined profile complements sleek road bike frames and groupsets. Available in striking red and classic black, this pulley system not only boosts your bike's efficiency but also adds a premium visual upgrade. Ideal for competitive road cycling, endurance rides, and discerning bike enthusiasts seeking maximum drivetrain precision.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-8\"\u003e\u003cp\u003eInnovative \u0026amp; Differentiating Features:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-9\"\u003e\u003cp\u003e- Reinforced carbon fiber pulley cage for enhanced durability\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003e- Advanced ceramic bearing technology for ultra-low friction\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- Lightweight aluminum pulleys for improved rotational efficiency\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Customizable spring tension for tailored shifting performance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- Seamless compatibility with Shimano Dura-Ace R9250 and Ultegra R8150 12-speed derailleurs\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Redefined modern design aligning with contemporary high-performance road bikes\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003eOptimize your drivetrain with the CeramicSpeed OSPW RS Pulley Wheel System-where innovative materials, advanced engineering, and stylish design come together to deliver unparalleled efficiency, durability, and ride quality. Perfect for serious riders and bike manufacturers aiming to push their cycling performance to the next level.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eEnhanced aluminum pulley wheels featuring lightweight, anodized 5-spoke design for superior durability and precision shifting performance. \u003c\/li\u003e\n\u003cli\u003eInjection-molded carbon fiber reinforced cage delivers exceptional strength, stiffness, and resistance to fatigue for long-lasting reliability on demanding rides. \u003c\/li\u003e\n\u003cli\u003eGrade 3 Silicon Nitride ceramic ball bearings provide 400% smoother operation, 128% increased hardness, and 58% reduction in weight, ensuring maximum efficiency and minimal friction. \u003c\/li\u003e\n\u003cli\u003eCustomizable spring tension settings allow for optimized derailleur performance tailored to your specific riding style and drivetrain setup. \u003c\/li\u003e\n\u003cli\u003eCompatible with Shimano Dura-Ace R9250 and Ultegra R8150 12-speed groupsets, designed to enhance rear derailleur efficiency, reduce energy loss, and improve overall cycling experience.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"CeramicSpeed","offers":[{"title":"Default Title","offer_id":42202373685315,"sku":"CGAS0065","price":629.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/DP0027.jpg?v=1773710830","url":"https:\/\/365cycles.com\/products\/ceramicspeed-ospw-rs-pulley-wheel-system-for-shimano-dura-ace-9250-ultegra-8150-pulleys-road-bike-cgas0065","provider":"365 Cycles","version":"1.0","type":"link"}