Shock Absorber Type 643 Competition QS

Marsoni

M251S

$712.50

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

Shock Absorber Type 643 Competition QSSwiveling, diagonally mounted compression reservoir. The reservoir is mounted at an angle and can swivel, offering numerous installation options on space constrained bikes. A solid milled upper mount integrates the high and low speed compression adjusters. Both compression and rebound provide 22 clicks of adjustment for uncompromised fine tuning. A pressure control valve prevents hydraulic blocking and tames sudden impacts. Spring preload is

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Exchange/Return Notes

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 rarely write reviews, but I'm so impressed by the fit and quality of this set that I made an exception. I'd been running my eufy 11S without brushes, and have been cleaning and reusing the filters for a while now and finally decided to buy replacements. The kit came packed well with everything in order and no damage. I replaced all of the worn parts and installed the brushes and did a test run - everything worked great. I expected some fitment issues because I've seen that with other kits, but I had no issues. The fact that you get multiples of almost everything is icing on the cake. Oh, and I wasn't paid or given anything in exchange for this review, as much as that's worth now, haha. I can recommend getting this kit for your robot vacuum, if it's the right set for your model.

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Reviewed in the United States on February 6, 2025

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LGN

Boise, US

★★★★★ 5

Good option for an aftermarket replacement solution.

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

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

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deb

Grantham, 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

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Brian M.

West Palm Beach, 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

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Suzanne

Draper, 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