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Shimano Deore XT M786 Shadow Plus 10 Speed Rear Derailleur

ITEM NUMBER: 104 SHIX72
PRICE POINT:
$99.98
 
PRODUCT DESCRIPTION

Shimano Deore XT M786 Shadow Plus 10 Speed Rear Derailleur

Designed to take abuse in stride.

With the RD-M786 Rear Derailleur, Shimano has refined shifting in all trail conditions, borrowing features from last year's XTR group, while adding compatibility with new direct mount frames.

The direct mount system allows the derailleur to sit about 25mm further back than previous designs, where it's less exposed to impacts along the trail. It also creates a stiffer interface between the derailleur and frame and allows for faster wheel changes, particularly on bikes using thru-axle systems. A pre-installed B-link allows for back compatibility with traditional derailleur hangers.

Another new feature is the XTR-derived Shadow Plus stabilizer switch which can be enabled to increase spring tension and eliminate chain slap. The low profile design allows the cage to easily clear obstacles like roots and rocks, and a longer arm length results in great mechanical mechanical advantage, essentially giving the shifter more control over the derailleur spring for crisp, reliable gear changes. Sealed pulley bearings keep out mud, dirt and grime.

The Deore XT RD-M786 Rear Derailleur is designed for Shimano Dyna-Sys 10-speed MTN drivetrains/shifters. Available in Mid-Cage or Long-Cage models. Black or silver finish.

  • Weight: 257g (medium)

Long Cage:

  • Maximum Sprocket: 36T
  • Minimum Sprocket: 11T
  • Front Difference: 18T
  • Total Capacity: 43T

New derailleurs work best with new chains.

Showing Questions 1-3 of 3


Q: I have a single speed setup with a 34 tooth front gear. I'm riding a blur 4x with 125 mm suspension. Should I get a long or short cage derailleur for my set up?

A: You will probably want to be running a long cage derailleur.


Q: What cage length should I get with a std 3 ring frt? Possibly going to 2 ring in the future......

A: You will need a long cage derailleur.


Q: Can this derailleur be used with a 9 speed shifter?

A: This rear derailleur is only compatible with 10 speed Shimano shifters


   
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shadow + - Aug 11, 2014

1 2 3 4
4 out of 5 stars
Centereach, NY

Oh yeah!! I went from a 2007 XTR to this derailleur on my new build and this thing works great,... seemless shifting,.. I love the clutch,... I do notice it takes a tiny tiny bit more pressure to switch gears but the chain is solid no slop in the rough stuff,... i threw away my chain stay protector.

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First derailleur with a clutch. Fantastic. - Aug 01, 2014

1 2 3 4 5
5 out of 5 stars
Clifton Park, NY

This is my first derailleur with a clutch. It's fantastic. I was concerned as I was moving from 9 speed to 10 speed and from a HT to a full suspension on my recent build, and was hoping this would shift as clean or better. I adjusted the derailleur on the stand, turned the clutch on and went out for a ride to adjust and was blown away by how well it shifts. Blows away my X9 derailleur, which is the nicest thing on a bike I've owned before buying this, and definitely an impressive component.

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A must if you don't have a clutch derailleur! - Jun 11, 2014

1 2 3 4 5
5 out of 5 stars
Fairhope, AL

For whatever reason (I assume budget), my 29'er with full XT groupset did not come with the "Plus" version derailleur - meaning it was the XT derailleur without the 'clutch'. With my 29'er being a VPP design, the larger chain stays means the chain would get slapped around quite a fair bit. I am running a 2x10 drivertain, so I have not have any chain drops thanks to the FD, but the chain slap was unreal. The solution? I gave-in and bought the "Plus" version with a clutch. What an absolute difference it made! Not only was my bike considerably quieter, but shifting over rough terrain actually improved! I'm guessing the extra tension on the chain that keeps it from bouncing around helps 'stabilize' the tension of the chain between the top jockey/pulley wheel and the cassette, making tighter and crisper shifting over bumpy terrain. My advice for anyone looking at the Shadow Plus derailleurs: Do not even waste your time with the non-clutched/non-"Plus" version! These are night-and-day. My bottom pulley wheel is started to show a little wear on the teeth so it will need replaced soon, but that's too be expected. Overall, 5/5 stars. I could not be happier.

1 out of 1 people found this review helpful
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Shifty - Jun 11, 2014

1 2 3 4 5
5 out of 5 stars
Wilson, WY

This derailleur works well, especially compared to other brands. It stays tight and is easy to adjust when removing your rear tire. It does occasionally skip on one of the ten gears, which can get frustrating, but there are several videos on youtube that show you how to easily maintain and tune this component. Keep it clean.

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Great chain retention, takes a firm push - Apr 30, 2014

1 2 3 4
4 out of 5 stars
HAMPDEN, ME

I haven't dropped a chain since getting this, but it isn't always easy to switch gears. During a couple of endurance races when my hands are fatigued it took some effort to push the gearing. Otherwise a great product.

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Cant go wrong - Apr 23, 2014

1 2 3 4 5
5 out of 5 stars
Kingston, ON

You just can't go wrong with XT components. This derailleur performs in all conditions and hasn't let me down yet. The shifting takes a little getting used to as it is harder to push than a standard non-plus derailleur, but the reduced noise and chain slap is well worth the extra effort.

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Legit - Apr 16, 2014

1 2 3 4 5
5 out of 5 stars
Ludlow, MA

This is an excellent product. Don't waste your time with the "non plus" version unless you LOVE the sound of the chain destroying your frame. The plus system is excellent and the 10spd platform is perfect for 1x10 adventures.

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so far so good - Apr 14, 2014

1 2 3 4 5
5 out of 5 stars
haddon heights, NJ

No dropped chains paired with a raceface nw ring. Smooth shifting, reliable. I've heard about issues with the clutch failing but so far so good. I just keep a close eye on it. I've heard you can relube them if it looks like it needs it to help with the clutch issues.

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XT M786 - Apr 06, 2014

1 2 3 4 5
5 out of 5 stars
FRUITA, CO

The XT is in my opinion the best bang for the buck in the Shimano line. The clutch makes dropped chains a thing of the past

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Great shifting, but faulty clutch - Apr 02, 2014

1 2 3 4
4 out of 5 stars
TOMBALL, TX

I purchased this derailleur to replace a SRAM X9 that had lost spring tension after a couple of years. The difference was night and day, the XT plus eliminated a lot of noise, and shifted reliably every time. There were no dropped chains or ghost shifts to speak of. After one year in service, I noticed that the shifting performance took a turn for the worse. I removed the clutch cover and found a broken piece, which controls the friction. Apparently this is a known issue with the "Plus" series derailleurs. It was replaced under warranty, so no hard feelings on my side. The shifting is now as precise as ever. Nonetheless, I have to knock one star off for durability.

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No chain slap?! - Sep 10, 2013

1 2 3 4 5
5 out of 5 stars
Canton, GA

Getting a Shimano "Plus" rear derailleur is easily one of the best upgrades to make these days. The clutch system is absolutely amazing. It completely silences the chain slap which is hard to believe until you try it. The Dynasys shifting is spot-on and very responsive. I'd recommend the medium cage if running this on a 1x setup.

2 out of 2 people found this review helpful
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