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!
(45)

Shimano Deore M591 9 SPD Rear Derailleur

Item #: RD277A01
USD$32.99 SAVE 45% USD$59.99 msrp
Choose Color
Silver
Qty
Found a Lower Price?

Shimano Deore M591 9 SPD Rear Derailleur


The Deore series is a staple of the Shimano lineup, offering outstanding performance at an affordable price.
  • Proven technologies deliver durability and reliability
  • Versatile design, on or off road
  • Double Servo-Panta mechanism for smooth consistent shifts
  • Light weight aluminum/steel construction, approximate weight 292 grams
  • Optimized for use with Shimano 9 speed, will also work with Shimano 7 and 8 speed.
  • NOT compatible with Shimano Dyna-Sys 10-speed MTB Components. Compatible with Shimano 10-speed Road components.
  • Maximum front difference: 22T
  • Max Rear Sprocket: 34T
  • Total Capacity: 45T
  • Clutch: No



4.7 / 5.0
45 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
33
11
1
0
0
Works with 36-11 cassette holds 25 chain links
Made it work with 50 tooth range of gears on touring tandem bike . 50-38-24 and 36-11

PROS: Easy To Install
April 16, 2016
Location:
Perris ca.
smooth, yet chrisp shifts
Can't go wrong for the asking price..

PROS: Easy To Install, Price, Precise Shifting, Durable

CONS: None So Far
March 1, 2016
Location:
SurCal
Perfect for Road Triple Conversion
I bought this to upgrade my classic road frame to a super wide range of gears for high mountain road riding at a reasonable price. This is a long arm "mountain" derailleur labeled "9-speed", but it works perfectly with 105 triple 10 speed shifters. It shifts as well as my (now unavailable) Dura-Ace triple rear derailleur at 1/4 the price. N. B. Shimano "10 speed shadow" derailleurs do not work easily with road shifters, so I was glad to find this.

PROS: Easy To Install, Precise Shifting

BEST USES: Road Biking, Mountain Biking
April 22, 2015
Location:
Poway, CA
works like it should
I have Shimano Deore as my drivetrain and it works great! Funny how when you have ALL the same level of components making up your drivetrain things suddenly work as per design! I previously had 2 different rear derailers and always had some sort of problem or had to make constant adjustments. I almost expected the same with this one, but nope. It shifts up and down as desired.

PROS: Precise Shifting, Easy To Install
September 5, 2013
Location:
HB
Works great on a road bike!
Fantastic choice for running low gears (with a large cog in back) on a road bike. Easily handles a 34t with room to spare. Also works well with my Shimano 105 8sp shifters.

PROS: Easy To Install, Precise Shifting, Lightweight

BEST USES: Mountain Biking, Road Biking
July 16, 2016
Location:
San Francisco
Works with STI shifters on a road bike!
I placed the order with Jensen USA at 3:30 PM on Thursday, June 25 and it was at my door at 12:30 PM on Friday, June 26! So it went from California to Northern Arizona in 15 hours! Amazing!

PROS: Easy To Adjust, Precise Shifting Across, Precise Shifting, Easy To Install

CONS: None Found Yet

BEST USES: Road Biking, Mountain Biking
June 27, 2015
Location:
Northern Arizona
The perfect rear derailleur
Delivery was prompt and all my order arrived as expected.

PROS: Precise Shifting, Durable, Great Range and Capacity, Easy To Install

BEST USES: Road Biking, Touring
May 19, 2016
Location:
Fredericksburg, TX
Excellent Choice
I replaced a 14 year old Shimano Deore XT rear derailleur on my Performance mountain bike with this Shimano Deore M591 SGS. My LBS installed new cables, housing, and the derailleur and the bike now shifts like new, perhaps even better than new.

Since the LBS did the work, I can not comment on the ease of installation.

PROS: Precise Shifting

BEST USES: Road Biking, Mountain Biking
August 18, 2014
Location:
Binghamton, NY
solid derailleur
Deore is a great value. I ran a Deore rear derailleur for years and it was a great part. The shifting is a little sluggish compared to higher end derailleurs, and it's a bit heavier, but it's also 1/2 the price, so you can't complain too much. Easy to install and adjust-- great bang for the buck here.

PROS: Easy To Install, Durable

BEST USES: Casual Riding, Mountain Biking
October 26, 2012
Location:
Indiana
Shimano workhorse
The Deore series is strong, and only a bit heavier than than the XT series. I can handle the extra few grams of weight, in a trade-off for reliability. Simply does the job!
July 16, 2017
Purchased
2 weeks ago
Location:
Jerusalem Israel

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 3 answers
Will this work on a 2003 Giant NRS? 9sp 11-34. I was told I need a non shadow design.
Mike M on Feb 17, 2017
BEST ANSWER: I am pretty sure that it would. I use it on Miyata 1000 Touring bike but I am quite certain it will work! It's a wonderful derailleur!

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
Box One Rear Derailleur
Box One Rear Derailleur Box's One� Rear Derailleur ...
Box One Rear Derailleur
Box One Rear Derailleur
Description:
Box One Rear Derailleur Box's One� Rear Derailleur is a pivotal part of their first-generation mountain bike drivetrain. Patent pending CamClutch� technology reduces chatter and maintains chain tension. Housed in a carbon fiber/nylon composite body, the clutch mechanism uses a ...
Campagnolo EPS Super Record RD
Campagnolo Super Record Rear Derailleur As a world-renowned ...
Campagnolo EPS Super Record RD
Campagnolo EPS Super Record RD
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 ...
KCNC Ultra 11 Tooth Derailleur Pulley
Please Note: Photo is for illustration purposes only. ...
KCNC Ultra 11 Tooth Derailleur Pulley
KCNC Ultra 11 Tooth Derailleur Pulley
Description:
Please Note: Photo is for illustration purposes only. The pulley for sale is an 11 tooth model. KCNC Ultra Derailleur Pulley Wheel KCNC's Ultra pulley wheel features a small, yet durable sealed steel cartridge bearing and dual labyrinth seal dust ...

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.