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SKU: RD6401

Shimano ZEE RD-M640-SS 10-Speed Short Cage Rear Derailleur with Clutch for Wide-Range Cassettes up to 36T, Mountain Bike, Durable Construction

Regular price $89.64
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Description
Specifications
Optimize your mountain biking performance with the Shimano ZEE RD-M640-SS Rear Derailleur - a high-performance, 10-speed, short cage derailleur engineered for durability and precision. Built specifically for aggressive trail riding and downhill cycling, this derailleur offers exceptional performance in demanding conditions.Premium Materials & ConstructionCrafted from durable, lightweight aluminum and reinforced with high-strength steel components, the Shimano ZEE RD-M640-SS is designed to withstand rough trails, impacts, and harsh weather. Its sleek gray finish not only provides a stylish look but also ensures corrosion resistance, extending the lifespan of your drivetrain components.Advanced Performance & EngineeringDesigned for wide-range cassettes up to 36 teeth, this derailleur ...
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Largest Cog36
ColorGray
Rear Der/Shifter CompatibilityShimano Mountain
Rear Derailleur Mount Type10x1 Standard
Rear Derailleur Mount TypeShimano Rear Direct Mount
Drivetrain Speeds10
Weight250
Chain Wrap Capacity (teeth)25
Cage LengthShort
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Customer Reviews

Based on 51 reviews
80%
(41)
12%
(6)
8%
(4)
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H
Harry Ng

great authentic Shimano product. have it working with a 11x42 cassette without any modifications (1x10) with Zee shifter;

M
Michael Stapleton

I paired this with a Zee 10spd shifter and a 1x10 drivetrain and took it over some very bumpy trails. No dropped chain and it shifts precisely. Worth the purchase;

T
Thomasajimenez1980

My old retro bike with ZeeDH and Box 4 8 speed shifter. This thing rips. I normally ride single speed but I decided to try some road bike gearing on a old 1990's balance frame. 26th front 12-19 gears out back. This thing climbs great out of the saddle. So if you want to run the Zee derailer on 8 spd the box 4 shifter is your jam!;

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`Ben Ansley

I’ve been running an original Sram X7 long cage for a couple years on a 1x10 conversion. My local shop recommended the Zee but it was backordered so I was lucky to find it on Amazon. Best decision I’ve ever made. No more dropped chains and shifts extremely quick and crisp. I was able to change it out and get it adjusted pretty easily after watching a few YouTube videos. Out of box it feels sturdy and well made. I highly recommend;

A
Amazon Customer

I was new to mountain biking and this was going on my Cannondale catalyst 4 hardtail. For the money this is one of the best derailleurs you can get and I can say that with confidence. shifts extremely smooth on flat and on slight inclines for more harsh inclines it will still shift it just doesn't like it too much. However behind that and the relatively small range cassette. I have no complaints. if you are looking for something for the trails where there will be a lot of climbing you might want to steer away from this but if you are up for building some serious muscle it is good. Like I said in the title I have run this since 2020 and have had zero problems with it. The durability is also extreme it can take a real bashing and it has taken several rock hits and come out okay.;