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Shimano XTR M986 10 SPD Rear Derailleur

Item #: RD244A01
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Shimano XTR M986 10 SPD Rear Derailleur

The newest incarnation of the XTR rear derailleur features Shimano’s new direct mount option that positions the rear derailleur in a way that protects it from hitting rocks or other obstacles, creates a stiffer shifting platform, and makes rear wheel changes faster and easier. It also comes equipped with Shadow Plus clutch technology that effectively eliminates chain slap and reduces the chances of dropping your chain. With these new upgrades, the XTR group continues to push the standard for top of the line mountain components trusted by pros and every day riders alike.
  • For 10 spd drivetrains
  • Compatible with standard dropouts and new Direct Mount dropouts
  • Shadow Plus Clutch technology
  • Carbon fiber outer plate
  • Weight:214g
4.9 / 5.0
25 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
22
3
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XTR rear derailer review
Put this derailer on a 1x10 conversion on my bike and my daughters. Added a 42 tooth rear chain ring and a custom b screw cassette clearance adjustment. The derailer works great on my Orbea ALma 29er but has an issue on my daughter's Scott hardtail in one high gear. Not enough of an issue to force a change back. Not the derailers fault as they weren't made for huge rear chain rings. The only complaint I have is the resistance to shifting in a few gears due to, I assume, the clutch. Otherwise works great at eliminating chain slap. I am happy.

PROS: Durable, Easy To Install, Smooth shifting, Lightweight

CONS: Limited Compatibility
August 19, 2014
Location:
PC, UT
Great Shifting
I find this product to be very good. It shifts amazing and keeps chain slap down. It is easy to adjust the small clutch assembly and does what is advertised. Only downside is the cost, but for top notch tech you have to pay.
October 28, 2012
Location:
GA
XTR M986
I did a complete upgrade of my drivetrain and this was a major part. Wow, I'm running this with a XT 3x crank, XT cassette, KMC Gold 10SL chain and XT trail pedals with XT B-spec. shifters on a 2013 Giant XTC. This derailleur in conjunction with these parts is beautiful! Effortless shifting and shift on the fly performance. Would highly recommend the XTR shadow plus set-up. No more chain slap, keeps everything right where it should be...on the bike!
I would say next to buying a good set of wheels, this would be a must for the next upgrade on your bike.
Thanks to Jenson for there unbelievable service, prices and honesty, You guy's rock, keep up the outstanding work!

PROS: Lightweight, Attractive Design, Durable

CONS: NONE

BEST USES: Racing, Casual Riding, Mountain Biking, Upgrade
September 2, 2014
Location:
Winnipeg,MB
The best money can buy
Upgraded after snapping last one. Super smooth and easy to fit

PROS: Easy To Install, Lightweight, Durable, Attractive Design
August 19, 2015
Location:
Raleigh NC
Nice upgrade
As expected

PROS: Versatile, Easy to Use, Lightweight, Durable

CONS: Tough to Install
August 22, 2016
Location:
Burlington Ontario Canada
Great plug and play replacement
Broke my other XTR derailleur when a stick got wrapped in my spokes. I just pulled the trigger on an exact replacement. Maybe would choose a lower end model in the future to save some $$.

PROS: Easy To Install, Attractive Design, Lightweight
November 5, 2015
Location:
Bennington, NE
XTR at it's finest
Without a flaw
September 25, 2016
Location:
Montreal. CA
Best of the best!
Great upgrade at a great price!

PROS: Lightweight, Easy To Install, Attractive Design

BEST USES: Casual Riding, Mountain Biking, Racing, Upgrade
June 16, 2015
Location:
Marin County
Great shifter
Great up grade to my bike works best it you up grade to the XTR shifter also

PROS: Easy To Install
September 15, 2015
Location:
Lubbock TX
Great rail. Perfect for a 1x10 setup with the clutch.
Set it up to remove front derailleur and run a 1x10 without a chain guide.

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

BEST USES: Mountain Biking, Upgrade
October 13, 2015
Location:
Tampa,fl.

Q & A

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Browse 2 questions Browse 2 questions and 5 answers
Can I use a 10-42 cassette with this derailleur? My previous experience with the SLX derailleur was pretty bad using a 10-42.
SAM O on Dec 14, 2016
BEST ANSWER: It would likely work with a OneUp Rad Derailleur Cage conversion. I set this up with an 11-36 Shimano XTR cassette and a 11-42 OneUp conversion and this works okay. Going down to 10 should not be a problem. However, I think you would get better shifting if you used an SRAM derailleur and shifter if using an SRAM 10-42 cassette.
What's the diff between CG Cage Direct Mount Shadow and SGS Cage Direct Mount Shadow?
Dare on Jul 30, 2016
BEST ANSWER: GS = Medium length cage
SGS = Long length cage
The cage consists of the inner and outer plates that hold the pulleys.

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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.