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Shimano
Deore RD-M591 Long Cage Rear Derailleur

Mfg PartNum:IRDM591SGSL
  (3 customer reviews)
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Reliable, durable shifting.

Shimano's Deore RD-M591 Long Cage Rear Derailleur is a bulletproof option for 8 or 9 speed bicycles. It features a light shift effort and Shimano's Double-Servo-Panta mechanism for quick, clean gear changes every time.

Aluminum body construction with steel plates. 34T max sprocket. 22T max front difference. Top-Normal operation.

Available in black (not pictured).

 

Speeds:  

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Great Touring Rear Derailleur
rating
by MarkFreund
Milwaukee WI
1 of 1 customers found this review helpful.

Wide range, handles a triple crank and wide range cassette with ease.

Reviewed 5/30/2019
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Solid option for 7 speed
rating
by basho
Daily Commuter
San Francisco, CA

I use this on a 1 x 7, steel frame city bike, daily commuting mostly. It replaced an old Acera, which was working fine, but this feels like a significant step up, for not much more money. Easy to set up, looks good, and shifting is smooth. Maybe a longer cage than I really need but I haven't used that many derailleurs to know.

Reviewed 6/13/2019
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Great product.
rating
by Anonymous
Cycling Enthusiast
Appalatia

Only about 50 miles on it, but those were very tough and muddy miles. Still operates flawlessly.

Reviewed 5/6/2019
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