Shimano Ultegra Di2 Rear Derailleur 2x12s

Description

With our fastest, most accurate shifting, the new 12-speed ULTEGRA R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28-34T low BENEFIT Our fastest ever rear shifting, 58% faster than RD-R9150 LED status indicator Wider range capacity FEA