{"product_id":"ceramicspeed-ospw-rs-3d-titanium-shimano-9250-8150","title":"CeramicSpeed OSPW RS 3D Titanium Shimano 9250\/8150","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eCeramicSpeed OSPW RS 3D Titanium Shimano 9250\/8150\u003c\/strong\u003e replaces the stock pulley cage on Shimano's latest Dura-Ace and Ultegra Di2 derailleurs with a 3D-printed hollow titanium body, an unusual manufacturing approach that lets CeramicSpeed build a stronger cage at a lower weight than a machined or cast part would allow. At a claimed 86 grams, it's remarkably light for a full oversized pulley system, and the reinforced cage design is meant to hold up to the loads that come with hard, repeated shifting rather than just looking the part.\u003c\/p\u003e\n\n\u003cp\u003eEach pulley runs on CeramicSpeed's handbuilt, coated ceramic bearings, and the coating adds corrosion resistance on top of the low-friction spin ceramic bearings are known for. CeramicSpeed states the system reduces friction by 35-40% compared to a stock pulley setup — a claim from their own testing rather than an independently verified figure, though the combination of oversized pulley wheels and ceramic bearings is a well-established way to cut chain friction versus a stock derailleur cage. It's built specifically for the Shimano Dura-Ace RD-9250 and Ultegra RD-8150 derailleurs, so fitment is a direct swap rather than requiring an adapter.\u003c\/p\u003e\n\n\u003cp\u003eThis is a component for riders who've already dialed in the rest of their drivetrain and are looking for the next real efficiency gain, not a first upgrade for a bike that still has stock wheels and a training groupset. At $1,995 to $2,101 depending on finish, it's priced for serious racers and gran fondo riders chasing marginal gains rather than casual upgraders, and it's backed by a lifetime warranty, which matters given the investment. It's available in Oil Slick and Silver finishes, with Oil Slick typically the quicker option to get in hand.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"CeramicSpeed","offers":[{"title":"Oil Slick","offer_id":43578158579756,"sku":"113684","price":2100.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":43578158612524,"sku":"113596","price":1995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/ceramicspeed-ospw-rs-3d-titanium-shimano-92508150-9171153.jpg?v=1771295589","url":"https:\/\/ricycles.com\/products\/ceramicspeed-ospw-rs-3d-titanium-shimano-9250-8150","provider":"RA Cycles","version":"1.0","type":"link"}