


🚵♂️ Shift Like a Pro, Ride Like You Own the Trail
The Shimano RD-M640 Zee Shadow Plus 10 Speed Rear Derailleur combines cutting-edge Shadow Plus technology with durable aluminum construction to deliver precise, quiet, and reliable shifting for 10-speed mountain bike drivetrains. Designed for direct mount frames, it features sealed bearing pulleys and fluorine-coated pivot bushings for smooth, long-lasting performance favored by serious riders.
| Asin | B007Q4P7UQ |
| Best Sellers Rank | #153,648 in Sporting Goods (See Top 100 in Sporting Goods) #111 in Bike Rear Dérailleurs |
| Brand Name | SHIMANO |
| Case Material Type | Aluminum |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (220) 4.6 out of 5 stars |
| Global Trade Identification Number | 00689228305328 |
| Included Components | Rear Derailleur |
| Item Dimensions L X W X H | 33L x 24.1W x 12.7H centimeters |
| Item Weight | 386 g |
| Manufacturer | Shimano |
| Manufacturer Part Number | IRDM640SSW |
| Material Type | Aluminum |
| Model Number | 153102 |
| Mount Type | Braze-On Mount |
| Number Of Items | 1 |
| Number Of Teeth | 25 |
| Unit Count | 1 Count |
| Upc | 689228305328 |
User
Buena calidad
Es un muy buen componente, llevo usándolo más de dos meses y ha resultado de muy buena calidad
User
Better than expected
Using the free ride version on my folding bike (11-32) due to the short cage. Shifting performance is great, short and precise. Not cheap but worth it.
User
Zee good!
It's awesome to get the same build/design quality of the pro-downhill level derailleurs at a non-pro price. This thing is fairly bulletproof in it's build quality, has a great clutch system to keep my chain from dancing, crazy easy to install with a new chain, and shifts smooth. Being it's not original equipment to my rig, my cassette is such that I have to really watch out for straining my transmission (running a 2x chainring). YES, it's an older bike, but just try and catch me on a downhill. It's not what you have, but how you use it!
User
Best derailleur ever
This was a lot cheaper when I bought it a few years ago. It is just great. Shame how much it costs now. It's almost still worth it. 10 speed Shimano is basically dead but I'm locked in and loving it. Shifts every bit as good as 10 speed 105, and has the clutch. Super low profile too. Almost looks like an 80's derailleur with the tiny cage. Perfect for a suburban commuter or anything else really. I hear it's been discontinued, another terrible decision by the bike industry.
User
Great derailer. Great for 20 inch wheel mountain bike.
we Great derailer.It works with my 34 tooth cassette and 30 tooth chainring. Select the part number for 36 tooth cassette. The photos shows it fitting and a 20 inch wheel diameter kids bike. The cage clears the fat 20x 2.8” tires.The derailer keeps the chain on the gears over bumps even with clutch off.There is a slight increase in pulley friction drag with the clutch on and in the largest cassette gear. So my kid rides with the clutch off. Still is a large decrease in chain slap over the stock derailer.
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