I have a gurgling 2020 X2 (non trunion) that I was planning to rebuild myself. I was just about to purchase shaft clamps and seal head wrench.
https://youtu.be/Y2j44dZ_JaY In this video the tech says “this ring helps with aeration”
I’ve been trying to figure out if the fox service kits include upgraded parts or if upgrades are available, assuming that’s my only option as the shock is obviously beyond the 1 year warranty.
Are these shocks that are getting replaced mostly the 2021+?
I’m not sure what to do, losing 2-4 weeks of prime season is not an easy decision. Are there any details on why the 2024 are better?
I would love to find a version history that detailed all the changes and problems
I have a gurgling 2020 X2 (non trunion) that I was planning to rebuild myself. I was just about to purchase shaft clamps and seal head wrench.
https://youtu.be/Y2j44dZ_JaY In this video the tech says “this ring helps with aeration”
I’ve been trying to figure out if the fox service kits include upgraded parts or if upgrades are available, assuming that’s my only option as the shock is obviously beyond the 1 year warranty.
Are these shocks that are getting replaced mostly the 2021+?
I’m not sure what to do, losing 2-4 weeks of prime season is not an easy decision. Are there any details on why the 2024 are better?
I would love to find a version history that detailed all the changes and problems
2020 MY shocks are not covered by this particular campaign. The latest version X2 is the ones being replaced.
I have a gurgling 2020 X2 (non trunion) that I was planning to rebuild myself. I was just about to purchase shaft clamps and seal head wrench.
https://youtu.be/Y2j44dZ_JaY In this video the tech says “this ring helps with aeration”
I’ve been trying to figure out if the fox service kits include upgraded parts or if upgrades are available, assuming that’s my only option as the shock is obviously beyond the 1 year warranty.
Are these shocks that are getting replaced mostly the 2021+?
I’m not sure what to do, losing 2-4 weeks of prime season is not an easy decision. Are there any details on why the 2024 are better?
I would love to find a version history that detailed all the changes and problems
I rebuilt a 2020 recently. You’re best shot at getting current seals (if they have updated ones) would be buying from Fox directly, although I bet any updates were years ago at this point. I remember there was one seal that was white instead of black rubber I was taking out. They answer the phone and you just need minimum of $50 order as I recall, which you could easily hit with the seals kit and a fluid or two. The 5wt oil in the x2 is NOT the same as the 5wt “ptfe infused” for fox forks (I made that mistake, it’s way higher viscosity and makes the shock feel locked out).
My main tip based on my one rebuild is to have a Big Ass Vice for clamping the shaft hard enough. Even with the correct aluminum clamps for the shaft, I messed one up using too weak of a vise and blemished the surface in a way you can feel sliding through seals. Now I have a massive $150 vise, and not only is it great for shocks but you’ll be surprised how often you use it for random stuff.
Mine was squelching right out of the box on my new Sentinel. Started the process online yesterday, sent it out today and spoke to someone at Fox who said they’d be sending me a ‘24 next week when they get more stock (I’m east coast US). He listed off the improvements they made in the ‘24. I don’t remember exactly what they were but it was basically what’s shown as “new” on the X2 page at ridefox.com.
So hopefully the improvements turn this thing into a reliable piece. I’m not holding my breath but credit to Fox for being so responsive. Now I’d like to ride my new bicycle please.
They are now using two buna shore 70 orings for the shaft seal instead of one polyeurethane shore 90 orings. Poly has good tear resistance, wich shouldn't be needed, the con of poly is compression set. Dual buna 70 should do it.
In the video l linked above (~2020) the tech removes a black oring and installs a white one. I assume poly. Sounds like fox then changed again to buna.
Marring the shaft is definitely a concern. I was going to buy non fox shaft clamps and a bunch of other suspension service stuff I’ve been living without (all machined in North America) from but now I’m thinking I’ll stick with the fox stuff for shafts.
This thread has a brief discussion on shocks performing better in certain frame designs (side loading, trunion etc.). And on the last page someone sent in a 2020 and got a 2024 back. But maybe because had sent in previously.
Today was the 5 or 6th ride since it was rebuilt. Mind you, half of these rides were pretty tame and shortish.
It started to make a bit of a squish sound when compressing. Will take it out one or two more times and see how it is. Otherwise... It's going back to fox.
In the video l linked above (~2020) the tech removes a black oring and installs a white one. I assume poly. Sounds like fox then changed again to buna.
Marring the shaft is definitely a concern. I was going to buy non fox shaft clamps and a bunch of other suspension service stuff I’ve been living without (all machined in North America) from but now I’m thinking I’ll stick with the fox stuff for shafts.
This thread has a brief discussion on shocks performing better in certain frame designs (side loading, trunion etc.). And on the last page someone sent in a 2020 and got a 2024 back. But maybe because had sent in previously.
I am going to do a diy service and try some fresh oil and seals.
The poly is plastic obviously and plastic is generally speaking less "springy" that rubber but tougher right?
IMO I'd rather use a standard Buna on the OD of the sealhead, but regardless of what you use it's a good idea to wrap a piece of electrical tape around the sharp ass threads before sliding the oring over, then obviously remove the tape after, that trick will improve chances of the more compression set resistant buna working in that location. For the sealhead I looked at custom ordering some custom buna 90 as opposed to standard 70 but I never followed through.
Also set the ifp depth to minimum for your stroke wich is "-0.050" from spec, and increase the ifp pressure from 125 to 150. This helps raise the pressure in the damper at bottom out where the pressure in the air chamber is incredibly high and trying its best to move into the damper.
Today was the 5 or 6th ride since it was rebuilt. Mind you, half of these rides were pretty tame and shortish.
It started to make a bit of a squish sound when compressing. Will take it out one or two more times and see how it is. Otherwise... It's going back to fox.
It's aerated not cavitated and if it's squishing and soft it for sure has.
Today was the 5 or 6th ride since it was rebuilt. Mind you, half of these rides were pretty tame and shortish.
It started to make a bit of a squish sound when compressing. Will take it out one or two more times and see how it is. Otherwise... It's going back to fox.
It's aerated not cavitated and if it's squishing and soft it for sure has.
Chiming in with my experience - Sent my 2022 X2 in for warranty 2 weeks ago. It was squelching within 50hrs of being rebuilt. I didn't expect it to be covered under warranty since it had been serviced by a LBS previously, and I hadn't seen this thread until today. Fox sent me a new 2024 X2, and received it today. Pretty happy with the customer service from Fox overall. They even paid shipping both ways (sent me a UPS label to send in my shock).
The Fox rep I talked to on the phone listed all the changes made to the 2024 shock and assured me the aeration issue has been resolved. Not gonna hold my breath, but I'm hopeful.
Thought this was interesting - on the X2 page on ridefox.com, one of the features for the new model specifially states "NEW bearing housing seal package virtually eliminates possibility of aeration"