Double click image to zoom in
Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.
The 11-speed DURA-ACE rear derailleur has been redesigned for lighter, quicker operation with the help of low-friction polymer-coated cables. This derailleur is also Direct Mount-equipped offering a stiffer foundation for improved shifting as well as minimizing the chance of frame damage through a crash. Shimano's DURA-ACE R9100 mechanical derailleurs provide superior performance and easier setup. System engineering at its peak. Each of the components magnifies the qualities of the others for an unparalleled level of performance. Optimizing input to maximize output. That's how it achieves supremacy. The DURA-ACE rear derailleur features Shimano's Shadow RD design, which gives the derailleur a lower profile and more stable operation.
Features:
•Shimano Shadow RD low-profile design
•Pulley maintains consistent distance to cassette for increased shift stability
•Maintains compact and smooth appearance
•Stable shifting performance
•Pulley follow-up in certain distance
•SHIMANO SHADOW RD construction
•Race endurance for less damage in crashes
•Adapted for race specific frame design
We are a Seattle, WA based outdoor gear store with a mission to make climbing, backpacking, skiing & mountaineering accessible and enjoyable for everyone.
© 2026, Master Store
