{"product_id":"ceramicspeed-ospw-rs-alpha-pulleys-road-bike-cgas0066","title":"CeramicSpeed OSPW RS Alpha Pulley System for Shimano Dura-Ace 9250 \u0026 Ultegra 8150 | Carbon Fiber Reinforced Aluminum \u0026 Carbon, Low-Friction Bearings, Active Debris Removal","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eUpgrade your Shimano Dura-Ace R9250 and Ultegra R8150 12-speed road bike drivetrain with the CeramicSpeed OSPW RS Alpha Pulley Wheel System - the pinnacle of efficiency, durability, and cutting-edge engineering. Designed with precision and style in mind, this high-performance derailleur pulley system features advanced materials and innovative technology to optimize shifting performance and reduce friction, ensuring a smoother, faster ride.\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\u003eCrafted with an injection-molded Carbon Fiber reinforced PA cage, the OSPW RS Alpha delivers exceptional strength, rigidity, and long-lasting durability. The 13-tooth upper and 19-tooth lower Alpha pulley wheels are equipped with Grade 3 Silicon Nitride ceramic ball bearings, offering 400% smoother operation, 128% higher hardness, and a weight reduction of 58% compared to traditional steel bearings. The anodized black finish adds a sleek, modern aesthetic to complement any high-end road bike.\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 precision, the OSPW RS Alpha system employs CeramicSpeed's renowned low-friction bearing technology and Active Debris Remover (ADR) bearing protection, which fully encloses the bearings to prevent dirt and debris ingress. The system features four customizable spring tension settings, enabling fine-tuned adjustment for optimal derailleur performance and chain retention, especially on challenging terrains.\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\u003eThe Alpha disc pulleys incorporate a narrow-wide tooth profile, effectively reducing chain drop and preventing external debris from getting lodged between the pulley teeth and spokes. The innovative pulley design ensures maximum efficiency, minimizes energy loss, and sustains peak performance over extended rides.\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\u003eWith its modern angular design and sleek black finish, the CeramicSpeed OSPW RS Alpha seamlessly blends with contemporary road bikes and groupsets, elevating both aesthetics and functionality. Ideal for competitive cyclists, enthusiasts, and those seeking a premium upgrade, this pulley system enhances your bike's drivetrain, providing faster, more reliable gear shifts and a smoother ride 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 for enhanced strength and longevity\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- CeramicSilicon Nitride bearings for superior smoothness and hardness\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- ADR bearing protection for maximum debris resistance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Narrow-wide tooth profile to prevent chain drops and improve chain retention\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003e- Four customizable spring tension settings for tailored performance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-16\"\u003e\u003cp\u003e- Proven compatibility with Shimano Dura-Ace R9250 and Ultegra R8150 12-speed derailleurs\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-17\"\u003e\u003cp\u003eTransform your ride with the CeramicSpeed OSPW RS Alpha Pulley Wheel System - engineered for superior efficiency, durability, and style. Optimize your Shimano groupset today for the smoothest, fastest shifting experience on the market.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eEnhanced durability with injection-molded carbon fiber reinforced PA cage, providing superior strength and resistance to impact and wear. \u003c\/li\u003e\n\u003cli\u003eOptimized for performance with CeramicSpeed's Grade 3 Silicon Nitride ball bearings, delivering 400% smoother operation, increased hardness, and significantly reduced weight for a more efficient ride.\u003c\/li\u003e\n\u003cli\u003eInnovative design featuring an angular, modern aesthetic that seamlessly integrates into contemporary bike frames and groupsets, elevating both style and aerodynamic performance.\u003c\/li\u003e\n\u003cli\u003eAdvanced components including Alpha disc pulleys with narrow-wide tooth profiles and Active Debris Remover (ADR) bearings, reducing dirt accumulation and maintaining optimal shifting precision.\u003c\/li\u003e\n\u003cli\u003eCompatible with Shimano Dura-Ace R9250 and Ultegra R8150 12-speed drivetrains, the OSPW RS Alpha system enhances drivetrain efficiency, offers four customizable spring tension settings, and is engineered for high-performance, maximum durability, and effortless maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"CeramicSpeed","offers":[{"title":"Default Title","offer_id":42202374111299,"sku":"CGAS0066","price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/DP0028.jpg?v=1779344747","url":"https:\/\/365cycles.com\/products\/ceramicspeed-ospw-rs-alpha-pulleys-road-bike-cgas0066","provider":"365 Cycles","version":"1.0","type":"link"}