

⚙️ Shift like a pro, ride like a legend.
The Shimano Deore XT RD-M786 SGS Shadow Plus Rear Derailleur is a high-performance 10-speed mountain bike component featuring a low-profile Shadow design and a stabilizer switch to minimize chain slap. Engineered for durability and precision, it offers crisp shifting and direct hanger mounting compatibility, making it a top choice for serious riders seeking reliable, snag-free drivetrain performance.
| ASIN | B007Q4MPXS |
| Best Sellers Rank | #422,917 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #356 in Rear Bike Derailleurs |
| Brand Name | SHIMANO |
| Country of Origin | Japan |
| Customer Reviews | 4.4 4.4 out of 5 stars (210) |
| Date First Available | March 30, 2012 |
| Included Components | Rear Derailleur |
| Item Dimensions LxWxH | 6 x 6 x 4 inches |
| Item Package Dimensions L x W x H | 6.06 x 5.98 x 3.7 inches |
| Manufacturer | Shimano |
| Model Name | XT RD-M780/M770 Series Rear Derailleur |
| Number of Items | 1 |
| Package Weight | 0.36 Kilograms |
| Part Number | RD4068 |
| Product Dimensions | 10"L x 7"W x 3"H |
| Size | Long Cage |
| Sport Type | biking |
| Style | Rear Derailleur |
| Suggested Users | unisex-adult |
| UPC | 689228299290 |
| Warranty Description | Limited Warranty |
J**R
Great Shimano Quality
Works as expected - great Shimano rear derailleur. My previous one did get damaged (bent) on a mountain bike ride - my fault. Was an easy swap out and needed only little adjustment. Shows that even a little bit of bend in the rear derailleur affects the shifting - now perfect shifting again. So - if your shifting is giving you trouble check the derailleur for potential damage and/or if your shifter cable is starting to fail.
A**N
Nice upgrade to my original XT.
Great upgrade from the standard XT. I had to replace mine when a good size branch levered up off the trail while riding, wedged itself between the mech and the wheel and ripped the old XT off. This one was not much more than a direct replacement and the clutch is well worth the added price. I was used to having a chain drop or two on every ride (15-30+ miles). I've been riding with the shadow system for about 150 miles now and haven't had a drop the whole time! Slap is lessened or non existent... hard to tell when going through the really rough stuff but overall the chain is obviously much more stable. I can't see a reason to step back to a non shadow system if I had to replace this one. If you don't like it, you can just switch the little lever off!
S**L
Saved my 2024 Oak Mountain XTerra Triathlon
Old derailleur died on my '18 Trek ProCaliber while pre-riding Oak Mountain, nobody had a 10-speed in stock anywhere in Shelby County but thanks to Cahaba Cycle I was able to order this from Amazon, it shipped promptly, and they installed it the day before the race. Worked perfectly and saved my race!
D**A
Not a 9 speed. Only 10 speed.
This is NOT a 9 speed derailleur. It does not have the same cable pull ratio as a proper 9 speed Shimano mountain bike derailleur. I learned this the hard way after installing it and properly setting all 3 set screws. It would match with some cogs and not with others. It would not travel the full width of my 9 speed cassette. I happened to have a 10 speed cassette and shifter that ended up working beautifully! Lucky. If you don't know yet, a derailleur is designed to travel in sync with the shifter that matches it's cable travel ratio. The two need to match. This is not compatible with 9 speed systems as the seller describes. It's a wonderful piece though. It works great and is better quality than my stock deore derailleur. Research 9 speed model names on the Shimano website if a 9 speed system is what you need and go based off that model info. The shipping time was fantastic, by the way. Well done there!
A**T
I am at a loss for words. My drivetrain ...
I am at a loss for words. My drivetrain was 15 years old and it was in desperate need of a makeover. I went with the Shimano Dynasys and turned it into a 1x10 with a Shimano narrow-wide 30t ring up front and a Shimano Tiagra 42-11 cassette in the rear. With a B-tension screw swap for extra adjustment, this did the trick. And with all of the modern features such as a clutch which you can activate or deactivate, a profile that sits tight against the frame to protect it from debris and smooth, quick shifts, I am in Heaven with this upgrade! If you are putting this in a system with a 42+tooth cog, just remember to swap your B-tension screw with a longer one which Amazon sells for less than $5.
S**K
Superb derailleur
My first M786 unit lasted five hard years of trail riding before the clutch unit packed it in. Probably too many hits against boulders. It still worked fine, but finding replacement clutch parts probably would have cost half the price of new one.
K**P
Missinformation
They said it was compatible with all 9 speed componentes, but it would not work with the altus shifter
M**N
Delicia de cambios y muy sólido
Trustpilot
1 week ago
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