Free Shipping Offer

Get free Standard Shipping with your $50 purchase today!

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.

|
|
WE'RE HIRING
Join the Team Today!
(152)

Shimano XT RD-M786 10SPD Rear Derailleur

Item #: RD245A03
USD$64.99 SAVE 27% USD$88.99 msrp
Qty
Found a Lower Price?

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
152 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
126
22
1
2
1
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
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
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:
Denver
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
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
Awesome 1x10 derailleur
Clutch type rear derailleur has worked fantastic with a 1x10 setup without a chain guide. I paired this derailleur with a XT 11-36 cassette and a race face 36 tooth single ring. It has worked flawlessly with no chain drops.

PROS: Easy To Install, Durable

BEST USES: Mountain Biking, Upgrade
July 18, 2013
Location:
Valparaiso, IN

Q & A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 8 questions Browse 8 questions and 30 answers
I am going to 1x10, using a sunrace 11-42 cassette and a 30 tooth front, do I need a long cage or a mid cage version?
JoeF on Feb 12, 2017
BEST ANSWER: Mid cage will work fine, I have personally used one with a 30/42 setup. Even a 32/42 was ok.
i am will be using a 2x10 22T/36T and a cassette 11-42 should I use a long or medium cage?
cesar h on Mar 15, 2017
BEST ANSWER: The total capacity of a drivetrain can be calculated as: "difference between biggest-smallest chainring tooth numbers" + "difference between smallest and largest sprocket teeth on cassette" e.g. 22 "44-22" for chainring + 21 "32-11" for cassette = 43 tooth drivetrain size (this would require a medium or long cage rear derailleur). - Yours is 45 tooth. Go with the long. Why are you using 11-42 with a double ring. 11-42 is more for a single. 11-36 is more ideal for a double. Then you can run a medium cage and still have good range with using a double.
can i replace a sram x9 with this? is it compatible with a sram thumb click shifter?
chris on Apr 10, 2017
BEST ANSWER: No, you will need a Shimano 10 speed mountain shifter to use this derailleur. With few exceptions, you cannot mix SRAM and Shimano rear shifters and derailleurs. There are some modifications that can be made to get certain combinations to work, but I have not found many of them to work particularly well. Bottom line, you need a 10 speed SRAM derailleur to use with your X9 trigger shifters.
will this work with 42 one up/10 spd?
Larry L on May 21, 2017
BEST ANSWER: It can, I suggest purchasing the wolftooth goat link. It can be tough to fine tune adjust it as this derailleur is not meant to accommodate that big ring.
Will this work with an XT RD-M786 derailleur ?
ROBERT J on Feb 6, 2017
Shimano XT RD-M786 10SPD Rear Derailleur
Shimano XT RD-M786 10SPD Rear Derailleur
Shimano M820 Saint 10 Speed Shift Lever
Shimano M820 Saint 10 Speed Shift Lever
BEST ANSWER: Yes, I've used it with an XT and XTR 10sp derailleur, and I'm currently using it with an XT 11sp derailleur on a 10sp cassette. Has worked perfectly in these applications.
I can't see the product picture. Is it for sure a shadow plus?
Daniel on Jun 3, 2016
BEST ANSWER: yes.
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.
Is this compatible with a 9 speed cassette and 9 speed shifters?
Hank on Apr 18, 2016
BEST ANSWER: YES! But only with SRAM mountain 9 speed bits, not Shimano.

Jenson USA ships worldwide, including APO/FPO addresses. For a quote, simply add the items you are interested in to your shopping cart and look for the "Shipping Options" box. You don't have to login or create an account to see shipping charges.

Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your preferred address, we can accept your foreign credit card and ship to a USA address for you.

Get free shipping with your $50 purchase today when you choose Standard Shipping at 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

Related Products
Campagnolo Chorus Rear Derailleur
2015 Campagnolo Chorus 11-Speed Rear Derailleur As a ...
Campagnolo Chorus Rear Derailleur
Campagnolo Chorus Rear Derailleur
Description:
2015 Campagnolo Chorus 11-Speed Rear Derailleur As a world-renowned premium brand, Campagnolo produces high quality products with long-lasting class that is steeped in over 80 years of Italian heritage. An innovative company spirit has led to the continual development of ...
Campagnolo Record Rear Derailleur
2015 Campagnolo Record Rear Derailleur As a world-renowned ...
Campagnolo Record Rear Derailleur
Campagnolo Record Rear Derailleur
Description:
2015 Campagnolo Record Rear Derailleur As a world-renowned premium brand, Campagnolo produces high quality products with long-lasting class that is steeped in over 80 years of Italian heritage. An innovative company spirit has led to the continual development of reliable ...
Campagnolo Super Record Rear Derailleur
Campagnolo Super Record Rear Derailleur As a world-renowned ...
Campagnolo Super Record Rear Derailleur
Campagnolo Super Record Rear Derailleur
Description:
Campagnolo Super Record Rear Derailleur As a world-renowned premium brand, Campagnolo produces high quality products with long-lasting class, steeped in over 80 years of Italian heritage. An innovative company spirit has led to the continual development of reliable products with ...

Need Gear Advice?

Our Gear Advisors are Ready to Help

Email Specials

Sign up for our weekly newsletter delivered via email.

Keep Pedaling

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.