{"product_id":"ceramicspeed-ospw-rs-5-spoke-pulleys-road-bike-cgas0070","title":"CeramicSpeed OSPW RS Pulley System for Shimano Dura-Ace R9250 - Ultegra R8150 - Carbon Reinforced Aluminum Cage, 400% Smoother Silicon Nitride Bearings, 12-Speed Upgrade","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eEnhance your cycling performance with the CeramicSpeed OSPW RS Pulley Wheel System for Shimano Dura-Ace R9250 and Ultegra R8150. Crafted with precision engineering and innovative materials, this high-performance derailleur upgrade delivers unmatched efficiency, durability, and sleek style tailored for the modern cyclist.\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\u003eThe OSPW RS features an injection-molded, carbon fiber-reinforced PA cage, providing exceptional strength and durability while maintaining lightweight construction. Complemented by anodized aluminum 5-spoke pulley wheels (13-tooth upper and 19-tooth lower), these components are designed for resilience under demanding riding conditions. The grade 3 Silicon Nitride ball bearings deliver 400% smoother operation, are 128% harder than standard steel balls, and 58% lighter, reducing friction for a more responsive and efficient drivetrain.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-4\"\u003e\u003cp\u003ePerformance \u0026amp; Engineering\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-5\"\u003e\u003cp\u003eEngineered for superior efficiency, the OSPW RS system reduces drivetrain friction to optimize power transfer and accelerate acceleration. Its low-friction bearings and precision design ensure smooth shifting and increased drivetrain longevity. The pulley system offers four adjustable spring tension settings, allowing cyclists to customize setup for optimal performance across various riding styles and road conditions.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-6\"\u003e\u003cp\u003eComponents \u0026amp; Technology\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-7\"\u003e\u003cp\u003eThis advanced pulley wheel system is specifically compatible with Shimano's 12-speed Dura-Ace R9250 and Ultegra R8150 rear derailleurs. The innovative carbon cage design not only enhances strength but also aligns seamlessly with contemporary bike aesthetics, making it an ideal upgrade for high-end road bikes. The aluminum pulley wheels, combined with ceramic bearings, set the standard for minimal friction and maximum durability in cycling groupset components.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-8\"\u003e\u003cp\u003eStyle \u0026amp; Use Case\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-9\"\u003e\u003cp\u003eThe sleek black finish and angular, modern design make the OSPW RS system a perfect match for cutting-edge road bikes seeking a blend of style and performance. Whether you're racing, training, or enjoying long-distance rides, this pulley system ensures quick, precise shifts and a more efficient power transfer, elevating your cycling experience.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003eInnovative \u0026amp; Differentiating Features\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- Reinforced carbon fiber cage offers increased strength and impact resistance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Low-friction Silicon Nitride ceramic bearings for superior smoothness and longevity\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- Lightweight aluminum pulley wheels for optimal speed and reduced weight\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Customizable spring tension for personalized setup and peak performance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003e- Compatible with Shimano 12-speed Dura-Ace R9250 \/ Ultegra R8150 groupsets\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-16\"\u003e\u003cp\u003eUpgrade your drivetrain with the CeramicSpeed OSPW RS Pulley Wheel System - the pinnacle of engineering for serious cyclists seeking increased efficiency, durability, and a sleek, modern look. Maximize your bike's potential today with this cutting-edge derailleur upgrade designed for high-performance road cycling.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eEnhanced efficiency and smooth shifting with CeramicSpeed's OSPW RS Pulley Wheel System, featuring ultra-low-friction Silicon Nitride ball bearings for superior performance on Shimano Dura-Ace R9250 and Ultegra R8150 groupsets.\u003c\/li\u003e\n\u003cli\u003eConstructed with a high-strength injection-molded carbon fiber reinforced PA cage, this system delivers exceptional durability, lightweight performance, and resistance to wear, ensuring long-lasting reliability on demanding rides.\u003c\/li\u003e\n\u003cli\u003eDesigned with a modern, angular aesthetic, the anodized aluminum 5-spoke pulleys (13-tooth upper and 19-tooth lower) combine lightweight construction with high durability, optimizing your drivetrain for precision and power transfer.\u003c\/li\u003e\n\u003cli\u003eAdvanced pulley wheel technology includes corrosion-resistant, 128% harder grade 3 Silicon Nitride bearings that are 400% smoother than steel alternatives, reducing friction and increasing derailleur efficiency for a quieter, faster ride.\u003c\/li\u003e\n\u003cli\u003eCompatible with 12-speed Shimano Road Dura-Ace R9250 and Ultegra R8150 derailers, this system features four customizable spring tension settings, allowing riders to optimize setup for maximum performance, stability, and a tailored riding experience.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"CeramicSpeed","offers":[{"title":"Default Title","offer_id":42202375061571,"sku":"CGAS0070","price":629.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/DP0026.jpg?v=1779344785","url":"https:\/\/365cycles.com\/products\/ceramicspeed-ospw-rs-5-spoke-pulleys-road-bike-cgas0070","provider":"365 Cycles","version":"1.0","type":"link"}