home_icon
The World's Largest Online Bike Store
  • Shimano Deore M591 9 Speed Rear Mech
  • Shimano Deore M591 9 Speed Rear Mech
NOW$34.99
  • RRP$65.99
  • |
  • SAVE47%

Select  Colour
Select  Size
Long Cage
  • IN STOCK(5+)

  • right This item ships to United States of America
  • right Shipping amount : $9.99
  • right 365 DAYS to return or exchange
  • right Pay by Bank Transfer or PayPal or Card

Shimano Deore M591 9 Speed Rear Mech

Wide link top normal Deore rear derailleur. High-performance components for serious cycling fun. Deore is designed to appeal to a wide range of cycling fans.

Features:

  • Wide link design increases rigidity and service life
  • Top normal return spring lends to incredibly intuitive operation when combined with Rapidfire shifters
  • Alloy and steel construction leads to lower weight without compromising strength and durability
  • Large 11 tooth pulleys are used for longer life
  • Two fluorine-coated link bushings for low-friction operation
  • 8- and 9-speed compatible
  • Compatiblewith 28-34T low sprocket
  • Average weight 299 grams

Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.

  • Colour: Silver, Black
  • Size: Long Cage
  • Speed: 9 Speed
 
Rated 4.1 out of 5 by 13 reviewers.
Rated 4 out of 5 by Идеальное решение в подобном ценовом диапазоне. Замечательная скорость переключения. Красиво смотрится. Качеством очень доволен. 15 October 2014
Rated 4 out of 5 by За такие деньги чудо Ваще нормальный такой, ролики сильно не стираются, работает четко, легко настраивается. Однако, т.к длинная лапка, тряска гарантирована, ибо это не Shadow. После 1500-2000км может быть почувствуете ухудшение работы - не XTR ведь 13 October 2014
Rated 5 out of 5 by Brilliant mech, no complaints I bought this to replace my 8 speed STX-RC rear mech after it snapped. I thought that it wouldn't work properly with an 8 speed I.G system, but it now works far better than when the previous mech was new! Very smooth and precise shifting. Most definitely recommended! 06 October 2014
Rated 1 out of 5 by туфта Стоял такой на купленном Kross Hexagon X9 отстойный переключатель. 2 месяца откатал и начались проблемы. 2-3 раза надо щелкнуть монеткой чтобы что-то произошло. вроде настроишь. 2-3 дня и опять тоже самое. Поставил старый Шимано оливио и забыл про него как о страшном сне. 16 May 2014
Rated 5 out of 5 by Надежный, долговечный переключатель Отъездил более 11 тыс. км. - никаких нареканий, разве что ролики поизносились. 19 August 2013
Rated 4 out of 5 by Deore m591 rear mech. I own 3 of these,and they have lasted years. A clean and a lube when required and cable adjustment and replacement from time to time. As others have commented ....not the lightest or the best ,but they just go on working. Wish the medium cage model was still available . 18 April 2013
Rated 5 out of 5 by Why spend more? Brilliant piece of kit, at an amazing price. Three times the money won't get you anything appreciably better; lighter, maybe, by a few micrograms, but weight benefits are wildly over-rated unless you're a pro racer. And if you're reading this, you're no pro racer! I use this with a 12-36 tooth cassette. The manual says the Deore is only rated to shift to 34t, but it manages the 36t effortlessly (adjust the B tension screw until you have the setting you want). Looks nice too: like a classic derailleur, instead of a Transformer toy. 03 January 2013
Rated 5 out of 5 by brilliant smooth shift Replaced my xt derailleur with this one, and my bike came alive again, for the price you just cant beat it,very smooth changes a great bit of kit. 19 June 2011
2 next>>
5 Questions : 8 Answers

Product Q&A

Ask your questions. Share your answers.

 
 
« Back
 
 
Gender: Male
1 year ago
Customer avatar
by
Rossendale,GB
Read all my Q&A
 
Please wait while more information about Simm is loaded.
Additional information about Simm could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
This is not a 'Rapid Rise' mech therefore will rest at the bottom when not under tension.

Bottom-normal.
1 year ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about crcsimon is loaded.
Additional information about crcsimon could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Answer: 
The M591 is a standard mech, so "Top Normal" as in chain on the smallest cog on your rear cassette with no tension on the shifter cable.

I believe that the M580 is the "Low Normal / Rapid Rise" chain on the largest cog with no tension on the shifter cable, if that is what you are looking for.
Age: 45 to 54
Gender: Male
Attitude: Passionate and Obsessive
5 months, 1 week ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about Lavatrax is loaded.
Additional information about Lavatrax could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
Age: 45 to 54
Gender: Male
Attitude: Just for Fun
5 months ago
Customer avatar
by
Canberra,AU
Read all my Q&A
 
Please wait while more information about AlexDemi is loaded.
Additional information about AlexDemi could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
Yes, the M591 will work fine as a replacement for the M581. Just one is Deore spec and the other the slightly more expensive LX spec. Other than that they're both a standard 9 speed RD.
Age: 45 to 54
Gender: Male
Attitude: Passionate and Obsessive
5 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about Lavatrax is loaded.
Additional information about Lavatrax could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Answer: 
You can certainly replace the Deore LX with a Deore.
Age: 25 to 34
Gender: Male
5 months ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about Gondi is loaded.
Additional information about Gondi could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
Can this work with an 8 speed Shimano 8S 11-34Tcassette ? My actual derailleur is a SHIMANO ACERA M360.
Age: 45 to 54
Gender: Male
Attitude: Just for Fun
1 month, 3 weeks ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about Martin50 is loaded.
Additional information about Martin50 could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
Yes this should be fine to use on your 8 speed setup.
Age: 25 to 34
Gender: Male
Attitude: Just for Fun
1 month, 3 weeks ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about CRCHops is loaded.
Additional information about CRCHops could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Answer: 
Check the max size of rear sprocket that the mech will handle, I think it is 32T, but may stretch to 34T, mine is 28T, so it works absolutely fine. I have recently bought this mech to use on an 8 speed set up, pair it up with new cables, and it works brilliantly. (Shadow mechs might not work, but the standard one will).
Just Checked with the Shimano webpage, and the M591 will work fine as its max sprocket size is 34T.
Age: 35 to 44
Gender: Male
Attitude: Passionate and Obsessive
1 week, 6 days ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about Jimmo is loaded.
Additional information about Jimmo could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
Bought a new Long Cage derailleur from CRC last week. Fitted and shifts, but clicks on jockeys.
Have tried adjusting B Tension Bolt. Could it be a new chain which needs to be longer?
Age: 45 to 54
Gender: Male
Attitude: On the up
5 months, 2 weeks ago
Customer avatar
by
HOLYWELL,GB
Read all my Q&A
 
Please wait while more information about WelshWizard61 is loaded.
Additional information about WelshWizard61 could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
So long as you have an adequate gap between the top jockey wheel and the cassette when in the largest cog then it's not a B-tension issue. You need to look at the extension on the rear mech when in the combination across the largest cog at the rear and the largest chain ring. Is the mech over stretched? If so then you may need a longer chain. Don't forget to allow for chain growth if on a full suspension bike as the chain length may need to be longer when the rear suspension is compressed.
Also, check the routing of the chain through the rear mech. A really easy mistake is to route the chain the wrong side of the little metal flap on the cage between the two jockey wheels. This will also give you a constant clicking noise as the chain will rub on the flap.
Age: 45 to 54
Gender: Male
Attitude: Passionate and Obsessive
5 months, 1 week ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about Lavatrax is loaded.
Additional information about Lavatrax could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
Would this be a suitable replacement for a Shimano Deore LX rear mech?
Age: 45 to 54
Gender: Male
Attitude: On the up
4 months, 2 weeks ago
Customer avatar
by
Manchester,GB
Read all my Q&A
 
Please wait while more information about WozH is loaded.
Additional information about WozH could not be loaded.
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers

Answer: 
Yes. Deore is just a few grams heavier than LX.
Age: 45 to 54
Gender: Male
Attitude: Passionate and Obsessive
4 months, 2 weeks ago
Customer avatar
by
Read all my Q&A
 
Please wait while more information about Lavatrax is loaded.
Additional information about Lavatrax could not be loaded.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
1 of 1
1 of 1

VIEWING