Dura-Ace RD-R9150-SS Di2 Rear Derailleur - 11-Speed Short Cage Black

Get the Shimano Dura-Ace RD-R9150-SS Di2 Rear Derailleur. It's an 11-speed short cage derailleur in sleek black. Compatible with Shimano Road Di2, it features a 10x1 Standard and Shimano Rear Direct Mount. With a largest cog of 30 and a chain wrap capacity of 35 teeth, it offers smooth and efficient shifting for your road bike.

Using this Shimano Dura - Ace rear derailleur is easy. First, make sure it's properly mounted on your bike according to the Shimano Rear Direct Mount or 10x1 Standard type. Connect it to your Shimano Road Di2 shifter system. When you shift gears, you'll notice how smoothly it moves. For maintenance, regularly clean the derailleur with a soft cloth to remove dirt and grime. Check the chain and cogs for wear and replace them if needed. Avoid exposing it to extreme weather conditions as much as possible. If you encounter any issues, consult a professional bike mechanic.