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Shock Absorber Type 643 Competition Q

Marsoni M251S
Sale price$627.50
Pay 4 payments of $156.88 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Shock Absorber Type 643 Competition QDiagonally mounted compression reservoir. The CNC milled aluminum bracket positions the reservoir at an angle for easy installation and excellent access to the adjusters. High and low speed compression can each be fine tuned in 22 steps. Rebound uses an open bleed system and is likewise adjustable in 22 clicks. Spring preload is continuously adjustable for riding with a passenger or luggage manually or, optionally, hydraulically. As usual, spring and
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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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4.6 ★★★★★
Based on 1812 reviews
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Verified Purchase
Dave sick
Phoenix, US
★★★★★ 5
car performance improvement
I bought this to use in my 2021 chevrolet equinox when my check engine light came on with an exhaust issue. so far I believe it's working. I have noticed increased mileage and a little more "zip" in the engine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
J
Verified Purchase
JayJay
Fort Morgan, US
★★★★★ 5
Works for us!
We use this regularly in my car. Seems to help keep sensors clear. My engine light comes on if I don’t add. We add it to gas tank. My husband says it’s because of poor quality (dirty) gas from other countries.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
J
Verified Purchase
Jeff Pesos
Draper, US
★★★★★ 4
Works like a supplement
If you use it and see a difference, you will blame it on this cleaner, if not, you will say the product does not work. Exactly like your weight loss supplements! Who knows what this stuff does, but it may do something. Or maybe it does not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
M
Verified Purchase
Michael Sliwinski
Belleville, US
★★★★★ 5
Used to clean an O2 sensor
Seems to have resolved an issue with a wavering idle for my 89 Mercedes 300e with 468,000 miles.
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Reviewed in the United States on March 27, 2026
M
Verified Purchase
Marvin Burton
Birmingham, US
★★★★★ 3
Nothing
Didn’t work for me
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Reviewed in the United States on May 26, 2026

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