Rebuilding a QA1 Circle Track Twin Tube Shock - QA1 Tech

Learn to rebuild a QA1 twin tube shock in just minutes for cleaning or replacing parts. These shocks are oil-filled and use a gas bag instead of being gas charged. Watch Marshall take apart and put back together a shock absorber that is rebuildable and revalveable.

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About QA1: Founded in 1993, QA1 specializes in providing performance shock absorbers, suspension components, carbon fiber driveshafts, rod ends, spherical bearings, springs, ball joints and more for a variety of markets, including circle track racing; drag racing; street performance; and street rodding, as well as several industrial markets. Whether you’re looking for improved ride quality, show-stopping appearance, or faster times, QA1 delivers.

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[munnachakra]

Wonderful explanation brother.I just want to know what kind of oil is used and how to rectify a base valve problem

[DanSeidelman-rj]

I disassembled my shock this afternoon because it was leaking again. This is the third time that I would be sending it in to be rebuilt. I wanted to see what was inside it. Mine has an o-ring around the compression tube that is not shown in this video. Where does this go on the tube? It was about centered on the length of the tube. I am giving up on the coil over shocks and going back to coil springs and conventional shocks.

[juanfarello]

Really cool explanation, after watching this I have a more clear idea, in my case happened that the tube had some air and messed with the correct function of the shock. One question, should i use hydraulic fluid with more density? Now I'm using shell spirax s1.

[greglangley]

When did Qa1 change from the closed cell foam pad to the gas bag? This morning, I tore down a pair of 50 series twin tube shocks that are over 20 years old that still have the foam.

[Chicanovolando]

Glad to know that type of absorber shouldn't be thrown away.

[munnachakra]

Can I use iso 46 grade instead of iso 32 for my twin tube front shock for my Toyota Etios 1.5 liter sedan which weighs almost one ton

[GXKid]

1:15 I literally only clicked this video to see what used oil looks like

[QATECH]

TECH TIP: Rebuilding a twin tube shock is a little different than rebuilding a monotube. Here’s a video with Marshall showing you how. 

[jebuzqshaze]

Hello, I am writing to you from Santiago de Chile and I have some adjustable gaz shocks and the liquid is lost through the stopcock, could you guide me in opening the stem. for a repair as it makes it difficult for me to send them to the factory. Greetings.

[danc]

Was this just a clean and oil replacement? Where was the rebuild part? New valve rings G disk? What part are used for the rebuild?

[punto]

What is the gas bag and what is it for ?What if you dont put it ... ?Thanks !

[naderachkar]

great video....what type of oil we can use ?

[mauriciosebastiansarmiento]

hello good morning, I would like to tell me as soon as aseice I must throw a damper because when I close the checkpoint exploited it. waiting for a favorable response atte greetings

[green]

thumbs up, , , but you did not tell us what type of oil to use, , , is it transmission oil?

[maskoff]

i have 63 series afco, can i do service at my garage??

[eniteekpolo]

did you introduce compress air as you did on the mono tube?

[saurabhkulkarni]

Why u wrapped the inner tube with plastic bag
?

[CkB-bdki]

Hi. What do you use for oil? Cst? Koni Yellow

[randeepbalan]

My Frd I have Infiniti q45 1999 model. My front shock oil leak. Can you Mack it

[BrakJan]

That oil looks like Nuke from Robocop 2.