Rear derailleur. 2x12-speed. Now simplified with a single derailleur cage length, the new 12-speed Shimano ULTEGRA R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. 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 sprockets
- Compact design includes an integrated wireless unit, charger, and switch
- LED status indicator
- Battery indicator
- Max. low sprocket: 34T
- Average weight: 262 g
- Mount: Direct Mount ✔
- Max. front difference: 16T
- Total capacity: 39T
- Low sprocket Max.: 34T
- Low sprocket Min.: 30T
- Top sprocket Max.: 14T
- Top sprocket Min.: 11T
- Pulley Teeth: 11
- SD300 port
- Charging port (pcs) 1
- Charging cable: EW-EC300
