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Shimano XT RD-M786 10SPD Rear Derailleur

Item #: RD245A03
From USD$59.99 SAVE 33% USD$88.99 msrp
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Shimano XT RD-M786 10SPD Rear Derailleur

Featuring Shimano’s innovative Shadow clutch technology, the Deore XT rear derailleur is designed for today’s aggressive style of trail and all-mountain riding. By maintaining chain tension, the Shadow system eliminates chain slap and lowers the chances of dropping your chain. Other improvements include reduced noise and rotational drag as well as a low-profile pulley cage for better clearance over harsh terrain. Why choose an XT derailleur over a cheaper derailleur? Built for heavy duty and long life in demanding trail conditions, the XT's overall linkage is stiffer and has a more machined construction, increasing durability and stiffness, which also increases shift quality. The pulleys are also of a higher quality, and spin easier for less drivetrain drag. The whole derailleur is built to exacting standards and will last significantly longer than a cheaper derailleur as well.

Don't know which cage length to choose? Choose a long cage "SGS" derailleur if you have 3 chainrings on your crankset, and a medium cage "GS" if you have 2 or fewer front chainrings.

  • Compatible with 10 speed drivetrains
  • Uses Shadow derailleur clutch
  • Low profile pulley cage
  • Weight: 258g
4.8 / 5.0
126 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
103
20
1
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Expected Shimano quality delivered again
I bought this derailleur to set a mountain bike up as a 1x10 with a narrow wide chainring and so far have been very pleased with the results! I have taken the bike on several rides, and have really enjoyed improved shifting performance and have yet to experience a chain drop (knock on wood). If you're looking at this product, you probably know that XT is one of the industry standards in balancing quality, performance, and durability; this derailleur is no exception!

PROS: Easy To Install, Attractive Design, Clutch Mechanism, Durable

BEST USES: Mountain Biking, Racing, Upgrade
November 19, 2014
Location:
Ann Arbor, MI
Consistent performer
as expected for a XT product. clean, quick, precise, and the clutch is the best thing to happen to derailleurs in years.

PROS: Durable, Lightweight, Attractive Design, Easy To Install

BEST USES: Racing, Mountain Biking, Upgrade
December 15, 2014
Location:
San Antonio
Reliable RD
I wiped out some time ago and destroyed my RD. Decided to use shimano instead of the other S brand. Boy was this a big upgrade in performance and also a big down grade in price. Shifting is without hesitation, very smooth. Im running this on a 1x10 with WT 42T and RF 32t.

PROS: Easy To Install, Durable
March 18, 2015
Location:
Santa Clarita
Great Derailleur
Only had a few rides but the clutch system seems to keep everything tight! Great product!

PROS: Attractive Design, Durable
March 16, 2015
Location:
SLC
not usual shimano quality
Installed to replace a non clutch XT mech (stick ripped apart the direct mount hanger), works well out of the box and shifts well. Unfortunately though, it seems to be made out of cheese and could not survive a small knock which bent it to the point I cannot get lowest gear.

Just simply not worth the money when you are paying for light weight materials that cannot take any knocks, it is mountain biking after all.

All in all, 4 months of bliss, should be at least 4 years.

PROS: Lightweight, Attractive Design, Easy To Install

CONS: Fragile
November 10, 2014
Location:
toronto, canada
Just buy this.
Buy it.

Can't go wrong for any 10speed application.

I used it to make a 10speed with a 38t raceface, M771 XT 11-36, XT M780 rear shifter, & SRAM PC 1071 chain. With the intention of making a back woods thrasher. So far so good. Very impressed with its function. NO drop chains with the clutch.

PROS: Durable, 10speed, Attractive Design, Lightweight, Clutch

CONS: Sram

BEST USES: Racing, Mountain Biking, Cyclecross, Upgrade
June 7, 2015
Location:
Central PA
Shadow Plus is an awesome technology!
Shadow Plus it's an awesome technology; almost no chain slap and shifting stays easy, maybe a bit more difficult to shift 2 or more cogs a once.
I coupled this mech with Sram 9 speed X7 shifter as I wanted to have 9 speed cassette: works perfectly!

PROS: Clutch Shadow Plus, Easy To Install

BEST USES: Upgrade, Mountain Biking
January 4, 2013
Location:
Chambersburg, PA
Nice!!!
First of all purchasing items from Jenson is painless. Awesome customer service. I picked up the Shimano XT M786 rear derailleur as one part on my 1 x 10 conversion with a 11-42 cassette. The mech installed easy, adjusted easy, shifts like butter, and with Shadow + technology it's easy on the ears.

PROS: Durable, Smooth Shifting, Attractive Design, Lightweight
February 26, 2016
Location:
Lake Havasu City, Az.
Reliable predictable shifting
Bought this to accommodate my large sunrace cassette and it works flawlessly

PROS: Easy to Use, Durable, Lightweight
September 20, 2016
Location:
Pisgah Forest, NC
Best Trail Derailleur for the money
I trail ride every weekend here in Miami and the XT 10 speed derailleur is by far the best derailleur money can buy...The attractive looks and the crisp and clean shifting feel is what makes this derailleur stand out! cheap, reliable and easy to use and maintain. so far its been 1 month with this shimano xt clutched derailleur and I absolutely love it! I strongly recommend this product !

PROS: Durable, Lightweight, Easy To Install, Attractive Design
July 16, 2015
Location:
Miami Florida

Q & A

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Browse 3 questions Browse 3 questions and 1 answer
I want to upgrade to a Shimano xt-rd-m786 rear derailleur will it fit my bike my cassette is 11-36 and my chainset is 44-33-22

thank you
Mr. G on Apr 15, 2016
BEST ANSWER: Yes, assuming that your cassette and crank are 10 speed, this derailleur will work fine with your crank and cassette. You need the "long cage" option to accommodate your current gear range. Make sure to select that option in the drop down menu when placing your order.
I can't see the product picture. Is it for sure a shadow plus?
Daniel on Jun 3, 2016
Is this compatible with a 9 speed cassette and 9 speed shifters?
Hank on Apr 18, 2016

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.