{"product_id":"shimano-dura-ace-rd-r9100-rear-derailleur-11-speed-w-ceramicspeed-ospw-black","title":"Shimano Dura-Ace RD-R9100 Rear Derailleur 11-Speed w\/ CeramicSpeed OSPW Black","description":"\u003cp\u003e\u003cspan\u003eShimano Dura-Ace RD-R9100 11-speed mechanical rear derailleur, upgraded with a CeramicSpeed OSPW oversized pulley wheel system. The OSPW's large pulleys reduce chain articulation and run on CeramicSpeed's low-friction ceramic bearings, cutting drivetrain friction compared with the stock cage. It's ready to bolt on.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDerailleur: Shimano Dura-Ace RD-R9100, 11-speed, mechanical (cable)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCage: CeramicSpeed OSPW for Shimano 9100\/R8000, short cage\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePulleys: 13T upper \/ 19T lower, aluminum, black\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBearings: CeramicSpeed Grade 3 silicon nitride balls\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax cog: 30T (Shimano spec for the short cage)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMount: standard hanger or direct mount\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003ePre-owned and fully functional. It shows scuffs and normal wear on the derailleur body and cage from use; please see photos. \u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003emissing pulley wheels\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Pulse Endurance Sports","offers":[{"title":"Default Title","offer_id":68144585441532,"sku":null,"price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0008\/9738\/4508\/files\/camera-E8B8BB67-94BA-4991-814B-54DE37A58B9F.jpg?v=1794685599","url":"https:\/\/www.pulseendurance.com\/products\/shimano-dura-ace-rd-r9100-rear-derailleur-11-speed-w-ceramicspeed-ospw-black","provider":"Pulse Endurance Sports","version":"1.0","type":"link"}