Fox X2 Performance shock help

Looking for some collective wisdom – I have a FOX X2 Performance shock – one of the new 2021 versions. Sag is set at around 25%, with factory suggested rebound and compression.

I’ve noticed the back gets a bit squirrely on fast flat out runs, and tends to bounce around bit when mashing the pedals in bigger gears. Slow speed traction is all good.

Usually I’d take a few clicks up on HS rebound – but the shock only has LSC and LSR settings. I understand these are to do with the shock speed, not the bike speed – but would a token help (I’m not blasting through the travel) or should I change the LSR?

I was thinking about adding a token, lowering the pressure, and increasing the LSR. I am approaching this in the right way?

Firstly I would just try running 30% sag, 25% is quote low for the back end (assuming this is an Enduro bike of similar).

Not sure I understanding the thinking with the token? Unless you need to adjust the spring curve deep in the travel i would shelve that one for now

My order of fiddling:
1. Revise sag to 30%, go test
2. Fiddle with rebound. Go play/section something and see if you can notice any positive effect
3. Look at upping the LSC to help with pedal bob. Again, go section something to check the effect

Firstly – what bike, as above, 25% may not be appropriate.

Secondly, while it may be intended for cane creek, and you dont have every option available to you, but I have found this helpful

https://canecreek.com/wp-content/uploads/2018/02/DB_Quick-tune_Sheet.pdf

I’d agree on the 30% sag without changing anything else as step 1 and see how that is.

With the bouncing is that the back wheel skipping around on the ground or the whole thing bobbing a lot? Is the latter then some more lsc. If the former then maybe less lsc to try and make it plusher.

Just do one change at a time and see then note what’s changed etc.

Thanks for that – I wasn’t convinced about the token. I’ll try dump some pressure and see what that does, before playing with the LSC. It’s a Transition Sentinel fwiw.

Defo more than 25% sag, personally never run less than 30 but depends on frame as to exactly how much

You deffo not got high rebound and compression dials?

Don’t bother measuring sag, its a pointless way to adjust your suspension. I would add some HSR and see what effect that has. If it doesn’t do anything I would reduce air pressure by 10-15psi and increase HSC. The X2 performance has LSC/LSR HSC/HSR.

jedi
Free Member

You deffo not got high rebound and compression dials

Not on the Performance version

You sure .

Maybe it’s a Float X rather than an X2?

Fox only lists the full X2 as a factory version. The Float X comes in factory and performance elite and just seems to have lsc and lsr.

I thought there was a performance X2 OEM that doesn’t have hsc or hsr dials. The performance elite does, that just doesn’t have the Kashima coating.

I think Transition suggest around 28-33% sag depending on the version. I’d try that first and adjust from there.

Yup there are 3 versions. Performance doesn’t get the extra adjustments, Performance Elite and Factory do

https://www.wiggle.co.uk/fox-suspension-float-x2-performance-rear-shock

Not seem that performance X2 with the silver stanchion. Maybe it’s oem as it’s not even listed on Fox’s own website that I could see.

I’ve had a performance X2 which I previously swapped out for a factory version, it made a big difference to how the bike rode.
The performance X2 is specced on a fair few bikes, for the doubters here’s one for sale (not mine) https://www.pinkbike.com/buysell/3181977/

Back to the OP, sorry if I’ve missed it – but are there any tokens in there now?

If you’ve never cracked it open it’ll probably have two or three anyway.

Perhaps run a bit more sag – combined with another token or two – if you were only on 25% sag because you were getting full travel too easily?

However, I’ve found I’ve had the same problem as you (rear feeling skippy and squirrelly) when I’ve had too many tokens in a Factory X2. Reducing from four to two made a huge difference in ability to track the ground.

So maybe try fewer tokens as well.

Totally depends on suspension format and leverage curve TBH, I had two tokens in one X2 and five in another.

And it’s quick and easy to twiddle the rebound knob and take the bike across a bit of rough trail repeatedly and see what difference that makes.

I dont own the OPs shock or any Fox product, but I always refer back to these tips from the Ohlins suspension manuals:

If the bike feels
• unstable
• loose
• bouncy
→ Increase rebound damping

If the bike feels
• hard
• nervous
• low traction
→ Decrease rebound damping

The low speed adjuster is used to control the
chassis movement towards the ground.
If you feel that the shock absorber feels soft,
spongy, or the bike feels unstable (for example
when going into a corner), close two clicks
(clockwise).
If you feel that the bike feels hard and has poor
traction, open two clicks (counter-clockwise).

The high speed adjuster has three positions,
I soft, II medium and III hard/pedal platform.
The shocks are delivered with the adjuster set
to position II. This is the best all-round set up
and has the function that should suit most riders
and tracks.
If you feel that the shock absorber is hard and
harsh on small bumps and corners and have
poor traction for the rear tire, go to position I.
If the bike feels soft, has a low riding position
and easily goes through the stroke or bottoms
on landing after a jump, work with low speed
compression and spring stiffness.
If the bike feels
• soft
• low
• is bottoming
→ Increase compression damping

If the bike feels
• harsh
• hard
→ Decrease compression damping

I’ve noticed the back gets a bit squirrely on fast flat out runs, and tends to bounce around bit when mashing the pedals in bigger gears. Slow speed traction is all good.

Not sure if this helps the OP as for when going fast it says to decrease rebound dampening but for bouncy it says to increase it! But anyway, hopefully this helps…