X
1.800.651.4050 Mon-Sat 8am-5pm PT
FREE SHIPPING ON ORDERS OVER $50More info
JOIN OUR EMAIL LIST
WISH
0
Shimano Dura-Ace RD-R9100 Rear Derailleur Shimano Dura Ace RD-R9100 Rear Derailleur
Click to zoom

Shimano
Dura-Ace RD-R9100 Rear Derailleur

Mfg PartNum:IRDR9100SS
  (5 customer reviews)
Price
Reduced
Purchase this popular item
today and save $24.30
1530
POINTS
Earn $15.30 in Rewards credit. Click to learn more.
This color/size is not eligible for Rewards points
In Stock Now
Sale
$218.69
Save 10%
MSRP $242.99
This item is currently not in stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Qualifies for Free Shipping!

Out of the shadows.

Shimano's RD-R9100 Dura Ace Rear Derailleur incorporates the Shadow design that made its debut on their mountain bike drivetrains. This low-profile construction better tucks the derailleur body beneath the cassette for more stable shifts, quicker wheel changes, and less exposure to possible damage in a crash. It also keeps a consistent distance between the upper pulley and the cogs across the entire gear range for more precise and reliable shifts on wide range cassettes.

Compatible with Shimano 11-speed road drivetrains.


Details:

  • Low-Profile Shadow RD Design
  • Largest Cog Size: 30T
  • Minimum Cog Size: 11T
  • Maximum Chainring Difference: 16T
  • Total Capacity: 35T

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

 

Mfg PartNum: IRDR9100SS 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
(4)
(1)
(0)
(0)
(0)
(80%)
(20%)
(0%)
(0%)
(0%)
Very good performance
rating
by Anonymous
upstate south carolina

Upgrade from Dura Ace 9000 very good crisp shifting is what I expected

Reviewed 10/25/2022
Was this review useful to you? Yes/No
Thank you for your feedback.
The design improvements reflect Shimano's high regard to provide seamless shifting.
rating
by Anonymous
Cycling Enthusiast
Grass Valley, CA
3 of 3 customers found this review helpful.

I use this on a Cannondale SuperSix High Mod that was originally equipped with a Dura Ace 9000 rear derailleur. While the DA 9000 shifting was excellent, it was a short-cage derailleur, and I wanted to switch to an 11-30 cassette. I am now 71 years of age and I still regularly climb gradients that can easily exceed 10%. The Dura Ace R9100 coupled with an Ultegra 11-30 cassette has not only made for quieter shifting, but it has made it just a little bit easier to climb the most challenging hills around my neighborhood. I also like the shadow design, and, even though I purchased B-Stock at a nice discount, there were no flaws in the derailleur whatsoever. I am very happy with this purchase.

Reviewed 1/28/2021
Was this review useful to you? Yes/No
Thank you for your feedback.
Best of its class
rating
by Olivier
Competitive Racer
San Francisco Bay Area

Precise shifting. Light. Easy to install. Only issue I have had so far is that the pulley/jockey wheels are on the noisy side of things. Nothing alarming, but it seems to be taking more time to "break in" than Ultegra.

Reviewed 7/12/2021
Was this review useful to you? Yes/No
Thank you for your feedback.
Superb function. Gorgeous to look at.
rating
by Loren
Cycling Enthusiast
Seal Beach, Ca
1 of 1 customers found this review helpful.

I'm an older, semi-fast recreational road rider with over 30 years experience with top of the line group sets. These include Campy, Shimano and even Suntour. I had a full Dura Ace 7900 group on my Litespeed Archon T1 and the shifting was dialed. In fact everything worked so damn well. But then I decided to do an upgrade to a Dura Ace 9100 mechanical group, mostly because I just dig the hell out of the way it looks. After I installed, adjusted and rode the new set up, I was just amazed that the front and rear shifting was far better than the 7900 group. Another thing that I'll have to wait to verify, but the drivetrain is silent. I haven't had much riding time on it, maybe 150 miles and haven't lubed the Dura Ace chain yet. It still has the packing grease. I'll see what it sounds like when I lube it.

The reason I only gave 4 stars for value is that I'm pretty sure Ultegra would function just as well, but at 12 the price. The glossy finish on the Dura Ace makes me swoon.

Reviewed 4/26/2019
Was this review useful to you? Yes/No
Thank you for your feedback.
Excellent upgrade and weight savings for any mechanical drivetrain.
rating
by Anonymous
Cycling Enthusiast
Richmond VA

Replaced an Ultegra derailluer that was absolutely fine but the weight savings and reasonable price made me do it. Just a great upgrade in my opinion.

Reviewed 11/12/2021
Was this review useful to you? Yes/No
Thank you for your feedback.

Articles will open in new tab.

Comparing bottom bracket types and standards.
You wanna go fast? Join the ceramic revolution!
Make your upgrades count. Here's the equipment that will help you ride your bike faster.
Campagnolo vs. Shimano vs. SRAM: demystifying groupsets.
What to consider when selecting a crankset for your road bike.