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SRAM X.9 9 Speed Rear Derailleur

Item #: RD283A03
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SRAM X.9 9 Speed Rear Derailleur

2010 SRAM X.9 Rear Derailleur

SRAM X.9 rear derailleurs features the same high quality and lightweight refinements as X.0, without the high price tag.  For 2010 X.9 has been redesigned to provide a lower profile well still maintaining SRAMs legendary 1:1 actuation.
  • Compatible with 7, 8 and 9 speed drive trains
  • Must be used with ESP shifters
  • Aluminum upper knuckle
  • Replaceable 11-tooth pulleys with bushings
  • Weight 215 grams

4.5 / 5.0
66 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
36
27
3
0
0
Quality Part
I upgraded to this from an old X7 derailer and it shifts so much smoother and quicker than my old one. It was also very easy to install and setup.

PROS: Easy to setup, Smooth shifting
March 28, 2012
Location:
Houston
Quality SRAM component
I replaced my Shimano drivetrain with the SRAM x9 based on reviews and frustration of inconsistent shifting. I'm so happy that I did. The SRAM shifting is much more crisp, accurate, and consistent. When I later purchased my roadbike, I was sure to buy the model that had SRAM components.

PROS: Great Price For High End, Love Accurate Shifting, Crisp Shifting, Takes a beating
October 5, 2012
Location:
Bay Area, Ca
snappy shifter
I swapped this one in place of my long cage after going to a 2X9 setup.
What I like about this derailer is that it is very crisp in shifting and has held up to quite a bit of abuse so far.

PROS: Precise
October 15, 2012
Location:
el dorado hills, ca
X.9 = super smooth
Didn't buy my rear derailleur at Jenson, but found a similar deal a few moths ago, installed it and combined with the x.9 shifters, new shimano deore xt CS-M770 cassette, deore M590 Crankset and the existing Deore front derailleur my shifting is 100% more smooth and efficient. Makes riding my '11 Trek Mamba a joy to ride compared to the shoddy x.4/x.5 and low grade shimano crank/cassette that came stock on it. Worthy & worthwile upgrade!

PROS: Solid build, Best bang for the buck, Smooth shifting, Great price
February 25, 2012
Location:
San Antonio, TX
Smooth shifting, solid construction
This is classified as a mountain bike component but I'm using it on a Cannondale hybrid that I've made into more of a flat bar road bike. I ride mostly paved bike trails, and although this der will take some pounding, it provides very smooth shifting at all speeds.

PROS: Precision Shifts, Great Appearance

BEST USES: Hybrid, MTB
April 28, 2012
Location:
Dallas, TX
Best value in the SRAM line
X9 is by far the best value in the SRAM line up. After destroying my sprockets on a climb the first month i rode this RD, SRAM did warranty the derailleur and get me another one. Im guessing the one i got was defective because i've put about 500 miles on the new one without any issues of slipping. I have an X0 setup on my new Ride but the X9 was half the price with just a little compromise in performance. Saving money means being able to buy other toys :-)

PROS: Shifting, Easy of use, price, Weight

CONS: Sprockets
March 27, 2012
Location:
Riverside, CA
Smooth
Delivery was fast and item came in perfect condition.

PROS: Rugged, Highly Compatible

BEST USES: Cross Country, Casual Trails
December 31, 2013
Location:
LV, NV
Shhhh, its quiet.
My ride buddy heckles me all the time. One point is my noisy clattery bike. He has picked up the pace on occaison to hear himself think. Haha. He runs a Medium cage and I had a long. I gave in once again... And once again, he's right. I had a bit of chain slap going on with my X9 Long cage and the Medium seems to have brought some of that under control. This X9 is just as snappy a derailleur as my other, so no worries there. Good upgrade.

PROS: Cuts the chatter

CONS: i had to pay for it, Why can't things be free

BEST USES: Quiet a noisy bike, All mountian
March 30, 2012
Location:
Urbana, IL
A difference you can feel
I have had several Sram X deralures all the way from x4 x5 x7 and now this new x9. I have also had my share of low end to middle of the raod shimano offerings and I can say without a doubt that sram has the best line up over the whole range. I put 600 miles on a new deore and it wouldn't shift right any more no matter what I did to adjust it. I replaced it with a used x7 and it was like the clouds broke and all my shifting problems were gone for good. For my new build I chose this x9 and I can't say enough good things about it. While I have never had any real problems with any Sram deralure I have used, I must say that this x9 has a feel of quality that makes me smile every time I shift and I love how quiet I am going through the forest without all the chain slap that my shimanos had.
June 11, 2012
Location:
Central Connecticut
Super Reliable
This derailleur has taken a beating, but still shifts fast and smooth. It does have a loud ka-klonk when shifting, but is always accurate.

PROS: Fast, Accurate

CONS: Loud
October 7, 2012
Location:
Middle America

Q & A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 5 answers
Which cage: Short, Medium or Long?
Which is best fit for the SRAM PG-990 9 Speed Cassette in a downhill application?
08 TR Blindside on Sep 26, 2016
BEST ANSWER: The length of the cage is determined by how many sprockets you have in the
front. If you have a one by nine it is a short. If it is a two by nine
then it is a medium.

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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.