Shimano RD-R8150 Ultegra Di2 rear derailleur

Experience Shimano´s fastest, most precise shifting with the 12-speed Ultegra R8150 Di2 rear derailleur. A stunning 58% faster than the previous generation, it offers unparalleled performance in an accessible package. The simplified single-cage design boosts versatility, accommodating cassettes up to 34T for a wider gear range. Its compact form integrates the wireless unit, charging port, and an LED status indicator for a sleek, intelligent system that delivers flawless performance ride after ride