Now simplified with a single derailleur cage length, the new 12-speed Shimano Ultegra R8150 rear derailleur packs their fastest, most precise shifting into a more approachable option that is more versatile than ever thanks to a single cage length option that is compatible with 30-34T low sprockets.
Features: • Fastest ever rear shifting, 58% faster than RD-R9150 • Compact design includes an integrated wireless unit, charger, and switch • LED status indicator • Battery indicator • Pairing • Adjust mode • Wider range capacity • Maximum low sprocket: 34T
