Shimano Ultegra R8150 rear derailleur 2x12-speed Di2 Electronic

The Shimano Ultegra R8150 Di2 rear derailleur is a 12-speed electronic derailleur for road bikes. It is right for you if you already have a 12-speed Ultegra or Dura-Ace Di2 groupset.

• 12-speed electronic shifting, for changing gear with a simple touch
• Accepts sprockets of up to 34T, giving you easier gearing on climbs
• A full battery lasts around 1000 km, then it can be recharged through the derailleur
• Lightweight, weighing just 262 g with a Medium cage
• Compatible only with 12-speed Ultegra and Dura-Ace Di2 groupsets: check yours

Technical specifications

• Model: RD-R8150 (Ultegra R8150 Di2)
• Derailleur type: Electronic
• Speeds: 12
• Largest sprocket: 34T
• Cage: Medium
• Weight: 262 g
• Charging: Via the rear derailleur with a charging cable
• Range: around 1000 km on a full battery
• Compatibility: Only with 12-speed Ultegra and Dura-Ace Di2 groupsets
• Colour: Black