Sword 2x Rear Derailleur 9/10 Speed

Marsoni

M251S

$165.94

Get it in 3 business days with 1 day shipping. Friday, May 29

Sword 2x Rear Derailleur 9/10 SpeedMicroshift Sword 2x Rear Derailleur 9 10 Speed The Sword 2x rear derailleur features a modern and innovative design with elegant mechanical operation. The cage is designed to use with a double chainring and an 11 38t cassette, giving you a very wide range with excellent climbing gears. Not only that, but the cage itself is replaceable, so you can repair a damaged cage or even switch to the 1x cage easily. It also features a hidden clutch design with

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We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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I've been very happy with this product. I think it is a good price point for what is included. Everything was a directly compatible and everything fit as you would expect. The filter quality is good and since there are plenty in the kit I find I change the filters more often which is probably a good thing. I recommed.

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Reviewed in the United States on October 3, 2025

Verified Purchase

deb

Lake Worth, US

★★★★★ 5

Eufy Brushes wear out with daily use

Size: 4 Pack

These brushes help the Eufy continue to run efficiently. I have 2 dogs and run 2 Eufies daily. It is surprising how much sand, dust, gravel and hair gets vacuumed. My furniture isn't as dusty and my floor doesn't need mopping as often.

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Reviewed in the United States on January 7, 2026

Verified Purchase

Brian M.

Boise, US

★★★★★ 4

It works

Size: 2+12+12+2 pack

Fits as expected and it's nice to have so many replacement parts. This item is priced well.

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Reviewed in the United States on January 11, 2026

Verified Purchase

Suzanne

Belleville, US

★★★★★ 5

Fits my old eufy

Size: 3+12+12+2+1 pack

This set fits my older model eufy and has extra parts for newer models. The filters did not fit our model (our fault for not doing proper research) but the fan sweeper is awesome.

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Reviewed in the United States on October 5, 2024

Verified Purchase

Dan

San Leandro, US

★★★★★ 5

Lots of extras!

Size: 2+12+12+2 pack

The brushes are a bit flimsier than the original but otherwise fine. I needed it for the rectangular filters more than anything

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Reviewed in the United States on March 7, 2026