{"product_id":"ceramicspeed-ospw-rs-alpha-pulleys-mrdp0188","title":"CeramicSpeed OSPW RS Alpha Pulley System for Shimano 105 R7150 12-Speed with Carbon Fiber Cage \u0026 Grade 3 Silicon Nitride Bearings","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eUpgrade your Shimano 105 R7150 12-speed drivetrain with the CeramicSpeed OSPW RS Alpha Pulley Wheel System - engineered for cyclists seeking premium performance, durability, and sleek style. Crafted from high-grade materials, this advanced derailleur upgrade optimizes efficiency and reduces friction to enhance your ride experience.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-2\"\u003e\u003cp\u003eMaterials \u0026amp; Engineering:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-3\"\u003e\u003cp\u003eConstructed with an injection-molded, carbon fiber-reinforced PA cage, the OSPW RS Alpha offers superior strength, durability, and lightweight performance. Its black aluminum pulleys feature a narrow-wide composite tooth profile, designed to prevent debris buildup and maintain smooth, reliable shifts even in challenging riding conditions. Equipped with Grade 3 Silicon Nitride ball bearings, these pulleys are 400% smoother, 128% harder, and 58% lighter than standard steel bearings, ensuring long-lasting, high-precision operation.\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\u003eThe OSPW RS Alpha system employs CeramicSpeed's cutting-edge low-friction bearing technology, including Active Debris Remover (ADR) bearing protection that encloses the bearings for enhanced longevity and protection from dirt and grime. Four customizable spring tension settings allow for tailored setup, optimizing performance across different riding styles and conditions. The system's innovative design improves power transfer and maintains consistent, whisper-quiet shifting, making it the perfect upgrade for serious cyclists.\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 a modern, angular aesthetic, the OSPW RS Alpha seamlessly integrates into contemporary bike frames, complementing the sleek look of your Shimano 105 groupset. Its black finish not only adds a touch of understated sophistication but also resists scratches and tarnishing. Whether you're riding for race-day performance, gravel adventures, or daily commuting, this pulley system enhances your bike's efficiency and style.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-8\"\u003e\u003cp\u003eKey Features \u0026amp; Benefits:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-9\"\u003e\u003cp\u003e- Reinforced carbon fiber housing for unmatched strength and durability\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003e- Narrow-wide tooth profile reduces debris interference\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- ADR sealed bearings for superior dirt and grime resistance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Grade 3 Silicon Nitride balls for ultra-smooth rotation\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- Adjustable spring tension for optimal derailleur setup\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Compatible with Shimano 105 R7150 12-speed derailleur\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003e- Supports cassettes up to 36T for versatile gearing options\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-16\"\u003e\u003cp\u003eOptimize your drivetrain with the CeramicSpeed OSPW RS Alpha Pulley Wheel System - the ultimate upgrade for precision, efficiency, and style in cycling performance. Whether you're conquering flats, climbs, or competitive racing, experience a smoother, more reliable ride every time.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eEnhanced aluminum pulley wheels with precision CNC machining for optimal weight savings and durability. \u003c\/li\u003e\n\u003cli\u003eFeatures injection-molded carbon fiber reinforced PA cage, providing superior strength, stability, and a sleek modern aesthetic suitable for high-performance road bikes. \u003c\/li\u003e\n\u003cli\u003eIncorporates CeramicSpeed's innovative Grade 3 Silicon Nitride ball bearings-offering 400% smoother operation, increased longevity, and reduced friction for more efficient pedaling and faster shifts. \u003c\/li\u003e\n\u003cli\u003eDesigned specifically for Shimano 105 R7150 12-speed groupsets, with a 13-tooth upper and 19-tooth lower pulley system that improves derailleur response and maintains optimal chain tension. \u003c\/li\u003e\n\u003cli\u003eEquipped with Active Debris Remover (ADR) bearing protection and customizable spring tension settings, ensuring consistent shifting performance and enhanced reliability in various riding conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"CeramicSpeed","offers":[{"title":"Default Title","offer_id":42355638960195,"sku":"MRDP0188","price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/DP0076.jpg?v=1779336804","url":"https:\/\/365cycles.com\/products\/ceramicspeed-ospw-rs-alpha-pulleys-mrdp0188","provider":"365 Cycles","version":"1.0","type":"link"}