{"product_id":"shimano-ultegra-di2-8150-rear-derailleur","title":"Shimano Ultegra Di2 8150 Rear Derailleur","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano Ultegra Di2 RD-R8150 Rear Derailleur\u003c\/strong\u003e brings electronic shifting precision to the R8100 12-speed groupset — with a single cage length that handles up to a 34-tooth low sprocket, covering compact road gearing and more demanding configurations alike. Shimano designed the R8150 to shift 58 percent faster than the previous Di2 generation, a difference you feel most when changing multiple gears under load or hunting for the right ratio mid-descent.\u003c\/p\u003e\n\n\u003cp\u003eWireless connectivity is built directly into the unit, and \u003cstrong\u003ean integrated system charging port\u003c\/strong\u003e keeps the installation clean. An onboard LED communicates battery status, pairing state, and adjustment mode at a glance — no guesswork about what the derailleur is doing mid-ride.\u003c\/p\u003e\n\n\u003ch3\u003eShimano Ultegra Di2 8150 Rear Derailleur Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eCompatibility: 12-speed Shimano Ultegra Di2 (R8100 series)\u003c\/li\u003e\n  \u003cli\u003eMax low sprocket: 34 teeth\u003c\/li\u003e\n  \u003cli\u003eShifting speed: designed to be 58% faster than previous Di2 generation\u003c\/li\u003e\n  \u003cli\u003eConnectivity: wireless with integrated system charging port\u003c\/li\u003e\n  \u003cli\u003eLED indicator for battery status, pairing, and adjustment mode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":43704738578476,"sku":"IRDR8150E","price":409.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-ultegra-di2-8150-rear-derailleur-4505889.jpg?v=1771297272","url":"https:\/\/ricycles.com\/products\/shimano-ultegra-di2-8150-rear-derailleur","provider":"RA Cycles","version":"1.0","type":"link"}