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  • Shimano XT M772-SGS Top Normal Shadow Rear Derailleur
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Shimano Deore XT Shadow Mountain Bicycle Rear Derailleur - RD-M772

by Shimano
43 customer reviews
| 3 answered questions

Price: $72.99 - $139.99
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  • Low profile for improved durability
  • Low profile design saves RD from damage in a narrow passage.
  • Direct routing reduces the risk of snagging
  • Stronger return spring for more crisp shifting feeling
  • Capacity : GS 33T, SGS 45T

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Frequently Bought Together

Shimano Deore XT Shadow Mountain Bicycle Rear Derailleur - RD-M772 + Shimano CN-HG93 Ultegra/XT 9-Speed Chain + KMC Missing Link Bicycle Chain Link (9-speed, 6 Pairs)
Price for all three: $130.02

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Product Description

SHIMANO SHADOW RD: low profile design intended for more aggressive riding. Quiet: will not contact chain stay. Super low profile design carries many benefits. Because of its low profile and single tension construction = no hitting chain stay in rough conditions.The result is smooth and silent performance.

Product Details

  • Shipping Information: View shipping rates and policies
  • ASIN: B00OSYDON4
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (43 customer reviews)
  • Amazon Best Sellers Rank: #108,412 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

9 of 9 people found the following review helpful By S. Phelps on March 29, 2008
Size: GS
Got this puppy to replace a stock Shimano Alivio and expected an improvemetnt in performance. What I got was nothing short of a miracle! Once I got this baby tweaked in on the cable adjustment it was on! When upshifing on inclines, I felt like I had an automatic transmission! I couldn't even feel the upshift. Even under full load out of the saddle this derailleur is outstanding. I am amazed at the difference this component has made. My bike feels like a $2000 package! Bravo Shimano!
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7 of 7 people found the following review helpful By J. Morris on May 29, 2009
Size: 9 Speed Verified Purchase
I had to replace my rear derailleur for the first time on my Specialized Stumpjumper. It came with an XTR version of this (2-3 years old now) and the old one got clobbered in a fall (maybe two?). When I went into the store to get a new one I was in sticker shock over the $200 price tag for the XTR. I said no thanks and did some research. The differences between this model and the XTR are minuscule and not worth the extra money. After a few hours of work I had this working and it shifts just as beautifully as my old one. This will be my standard from now on.

Be careful in your selection of the model you are looking for as there are differences for different bikes, different gears, etc. They make them all and you need to get the right model. This is particular one is probably the most common though. You should replace your shifter cable at the same time too. Instructions that came with this are pretty good, but could be a bit better.
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4 of 4 people found the following review helpful By Bjoerk on March 3, 2011
Size: 9 Speed
I was riding the Shimano RD M770 for a number of years. I really liked the precision shifting with a complimentary Shimano XT Deore parts. One day I was in extreme low gear and cresting a hill when I shifted up and my chain bound with a lower derailluer. This threw my chain into the spokes and twisted my derailluer 180° pointing straight up. Essentially it only broke the hangar stop on the pivot axle. But I replaced the entire derailluer assembly with the 772. What a difference. The 772 has a much stronger spring that enables crisper shifting and quicker response. The "Shadow" series also resides under the rear sprocket instead of outside of it. This means that it is less vulnerable to striking passing the obstacles additionally, the cable makes a straight pull from the lower arm as opposed to and an angled pull which started to fray my shifter cable. Although it does not appear as durable as the 770 it certainly performs far better. And for the price difference of only a few dollars it is a worthy upgrade. I'm very happy once I dialed in the shifter tension. Another nice feature of the "shadow" series is that you can shorten the lower cable housing so you don't have that large loop going into the derailluer. Instead you route the sleeve directly at the derailluer with little slack. This decreases the amount of cable friction from the shifter to the rear assembly. It is noticeable and more precise.
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3 of 3 people found the following review helpful By Amazon Customer on September 1, 2012
Size: GS Verified Purchase
Works like it's supposed to. Excellent value in a higher end derailleur. I don't think there is anything I would change about. If you want something lighter (and more fragile) than spend the cash for XTR.
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1 of 1 people found the following review helpful By Josh-D. S. Davis TOP 1000 REVIEWER on October 26, 2013
Size: 9 Speed Verified Purchase
You can go to the 900 series and get something lighter, or the 800 series to get something you can drive a truck over.

But, if you're upgrading, this is the spot to land. Great take-up spring prevents chain slap or auto-shift on bumpy roads.

Adjustment was: Install, pull cable tight, tighten the cable screw, set the high & low limits.

Poof, that's it. Perfect. Shifting is crisp.

Unless you're racing, there's no need to go past this level, but if you ride more than a few miles a week, it's really worth upgrading to this.

Also, the 792 (shadow) supports 36T rear gears, which is great if you're using a compact crank or single front to scale walls.

It also is closer to the spokes, and stiffer, so you're less likely to catch the take-up arm on obstructions.
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1 of 1 people found the following review helpful By john mcburney on February 2, 2014
Size: GS Verified Purchase
It's a nice derailleur. I'm using it on a 9 speed road bike with an SRAM 12-32 cassette. It indexes with the 105 STI just fine. For some reason even though it is long cage and has really stiff chain tensioning it seems like I get some chain slap in the small cogs. Maybe time to take out another link in the chain. It's a nice new 9 speed STI derailleur. If I could find a NOS Ultegra or Dura-Ace 9 speed might replace it. But I'm grateful it was available
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1 of 1 people found the following review helpful By Pokey on December 21, 2014
Size: GS
For those of you wondering, I can confirm that this derailleur DOES work with an 11-36 cassette AND 10-speed road STI shifters. So you can easily run a wide-range cassette on your road bike. Despite Shimano only rating this to a 34t, I had no problem getting it to work with the 36t, and shifting is excellent.
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1 of 1 people found the following review helpful By bclava730 on May 14, 2011
Size: 9 Speed Verified Purchase
Upgraded from the Shimano deore to this Shimano deore XT, and it was a great upgrade! After 8 hard years on the normal deore I couldn't ask for much more out of the springs, this XT was like a night and day difference so precise and immediate, shifts flawlessly even under pressure. Great purchase and price.
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