{"product_id":"ceramicspeed-ospw-rs-alpha-for-shimano-dura-ace-rd-9250-ultegra-rd-8150-black","title":"CeramicSpeed OSPW RS Alpha for Shimano Dura‑Ace RD‑9250 \/ Ultegra RD‑8150 (Black)","description":"\u003cp\u003eThe \u003cstrong\u003eCeramicSpeed OSPW RS Alpha\u003c\/strong\u003e is a high‑end \u003cstrong\u003eoversized pulley wheel system\u003c\/strong\u003e engineered for \u003cstrong\u003eShimano 12‑speed Di2 road derailleurs\u003c\/strong\u003e, specifically \u003cstrong\u003eDura‑Ace RD‑9250\u003c\/strong\u003e and \u003cstrong\u003eUltegra RD‑8150\u003c\/strong\u003e. Designed for riders who want a premium \u003cstrong\u003edrivetrain upgrade\u003c\/strong\u003e with a modern, angular cage profile, the OSPW RS Alpha brings CeramicSpeed’s latest pulley technology to road and triathlon builds, with features aimed at durability, cleaner running in messy conditions, and a refined finish that matches contemporary bike aesthetics.\u003c\/p\u003e\u003cdiv\u003e\n\u003cp\u003eThe RS generation is more than a styling update. CeramicSpeed has reinforced the cage structure for improved strength and long-term reliability, making it a popular choice for riders who put serious kilometres into training and racing. In bike shop terms, it’s the kind of component you fit when you’re already investing in performance \u003cstrong\u003ebike parts\u003c\/strong\u003e, clean Di2 integration, and a quieter, more resilient drivetrain setup—often paired with a professional \u003cstrong\u003ebicycle service\u003c\/strong\u003e appointment to ensure correct installation, chain length, and derailleur adjustment.\u003c\/p\u003e\n\u003ch3\u003eActive Debris Remover (ADR): built for real‑world conditions\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eADR (Active Debris Remover)\u003c\/strong\u003e system is a patent‑pending feature designed to reduce the chance of contamination reaching the pulley bearings. It uses a dust cover that sits in a groove inside the pulley wheel to help enclose the bearing, combined with a bladed groove structure intended to actively push debris away as the pulley rotates. This is especially relevant for riders who train year‑round, ride in wet weather, or frequently encounter grit on back roads—exactly the conditions many Queensland riders deal with in winter or during event prep.\u003c\/p\u003e\n\u003ch3\u003eALPHA Disc pulley wheel: durability and protection\u003c\/h3\u003e\n\u003cp\u003eThis Alpha version uses the \u003cstrong\u003eALPHA Disc pulley wheel\u003c\/strong\u003e, featuring a two‑piece construction with a narrow‑wide tooth profile in a composite material designed for wear protection and reduced noise, paired with a solid aluminium disc intended to prevent debris from lodging between pulley “spokes.” It’s a practical detail for keeping the drivetrain running smoothly and reducing the chance of trail or road debris causing issues mid‑ride.\u003c\/p\u003e\n\u003ch3\u003eMade for Shimano Di2 performance builds\u003c\/h3\u003e\n\u003cp\u003eThe OSPW RS Alpha is purpose‑built for \u003cstrong\u003eroad and triathlon\u003c\/strong\u003e riders running Shimano Di2 and looking for a premium finishing touch to their setup—common in high‑end builds where riders also focus on chain condition, wax or performance lubricants, and precise shifting tune. For best results, many riders have these installed by a workshop during a \u003cstrong\u003edrivetrain service\u003c\/strong\u003e (chain check, hanger alignment, Di2 indexing, and rear derailleur setup), especially if the bike is used for racing or long-distance events.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSpecifications (as provided)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiscipline:\u003c\/strong\u003e Road and Tri\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 113490\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet weight:\u003c\/strong\u003e 102.0 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGross weight:\u003c\/strong\u003e 302 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley material:\u003c\/strong\u003e Aluminium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDerailleur brand:\u003c\/strong\u003e Shimano\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDerailleur compatibility:\u003c\/strong\u003e Shimano \u003cstrong\u003eDura‑Ace RD‑9250\u003c\/strong\u003e and \u003cstrong\u003eUltegra RD‑8150\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Ceramicspeed","offers":[{"title":"Default Title","offer_id":47257203998891,"sku":null,"price":812.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/6402\/5771\/files\/5757465191.jpg?v=1782022546","url":"https:\/\/pedalpassion.cc\/products\/ceramicspeed-ospw-rs-alpha-for-shimano-dura-ace-rd-9250-ultegra-rd-8150-black","provider":"My Store","version":"1.0","type":"link"}