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ShimanoXTR Di2 RD-M9050 Rear Derailleur
Item # SHI005I
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What do you think about this product?
May 1, 2020
POS. AVOID AT ALL COSTS
- I've used it several times
I was initially super stoked to try out the new XTR Di2 set up. What a disappointment. Two problems in five rides and now I can’t even get the shifter to work/charge/turn on. Called Shimano customer service and they told me take it to my local bike shop which is Two weeks out on appointments. It’s one expensive single speed now. I wouldn’t recommend this to Anyone. Can’t wait until I can get a SRAM set up installed.
May 25, 2020
You just have a loose connection somewhere. Check all the plug ports and then you will be set.
July 24, 2017
XTR DI2 = Scrap
- I've put it through the wringer
I've been a loyal Shimano XTR user for well over 20 years. DI2 finally changed that. I just ordered my first SRAM Eagle groupset. The idea of electronic shifting is great, and I love the DI2 for the road, but when it comes to mountain biking, DI2 is way too slow, with a lot of complicated double shifts, especially when you're on undulating terrain. I used my DI2 for just under a year -- maybe 1,200 miles. During that time, I had the another of the same frame set up with XTR mechanical. The performance and ride experience between the two was not even close, but I wanted to give DI2 a real chance, so I kept trying it. Last week, after racing the Tahoe Trail on DI2, I had my shop strip the DI2 and replace with mechanical derailleurs and shifters. Mechanical weighs less, it's faster; and you have more control of gearing -- and the constant beeping!! Yes, I am sure there's a way to silence it, but it drove me crazy and made me want to apologize to everyone else forced to listen to it. From the start I was annoyed with DI2's programming. I tried to have it reprogrammed to allow me to go to higher sprockets while on the small chainring. I was able to get an extra gear or two, but the thing was still constantly driving me to the large chainring. Then if you ever needed to immediately drop to a very low gear (maybe because you come around a corner and find a big obstacle or sudden hill), you've got to allow the computer to perform a bunch of shifts, including a front and rear simultaneous shift. Ultimately, the DI2 was allowing me to go through 4 or 5 sprockets on small ring. The rest was all large. If you're running that way, why even have a double? Shimano of course offers a single setup, but the range in the back is less than ideal for a larger rider doing endurance events, so, I started looking into SRAM, which offers a wider range with the Eagle groupset. It's on the way. This will be the first mountain bike I've ever owned without Shimano shifting, and I've owned a lot of them. Thanks, DI2, you suck!
March 30, 2017
Weight is wrong - per Shimano's site it's 289-292g http://bike.shimano.com/content/sac-bike/en/home/e-bike/shifting/derailleurs/rd-m9050.html
October 24, 2016
I want to run a 1x 40T front, 11-40 rear. Will a medium cage xtr work?
October 25, 2016
Yes, the medium cage works with single and double chainring setups with the current generation XTR. Bradley Gehrig Customer Account Manager Office: 801–204-4541 firstname.lastname@example.org
August 19, 2016
does this product ship to Australia and are the cables included?
May 7, 2016
Great for CX 1x
- I've put it through the wringer
Really happy with this RD. I have it on a CX bike set up with a 1x and it works really well. I had a DuraAce RD with a RoadLink but the XTR clutch handles the big range much better without any chain issues.
January 16, 2016
Super awesome !
- I've used it once or twice and have initial impressions
Have Dura Ace Di2 11-speed on the road steed, now rolling with it on my mt steed :) Total FYI - I am running a SRAM 10-42 cassette, SRAM chain, and SRAM Xo1 1X cranks with this - works flawlessly! I had many hesitations because I love the 1X drivetrain SRAM has to offer as well as the hill grinding 10-42 cassette. Setting up is waaaay easier then running cables, etc. Only hard part is, that depending on your frame, where to put the battery and wires. Pre-planning wiring and battery placement is a must prior to install. I have a 2015 Stumpjumper FSR 650b and was able to locate the battery in in the seat tube, just below the dropper post. For the short runs of wires that are exposed, I used electrical shrink-wrap tubing for a super clean look. Long term test to follow. I am familiar with the E-Tube set-up and set the rear derailleur to 'fast' - awesome. Also, if you run Di2 on your road bike, the front LED Display already has a junction box, so no need for that. Additionally - if you get the new FOX shocks, you can remotely actuate the shock setting with this stuff also - super crazy.