old thread but was curious what you came up with. I’ve been looking into the inner workings an revalving Fox 2.0 on my f-350.

Thanks. What valving did yours come with?.... it’s written on the dust cap(where the shaft goes in the body usually has a set of numbers with a dash between like 30/90). And who did you get them from?...reason I ask is some valve what they sell differently.

there are different part numbers for these shocks depending on length and the weight of the indicated truck. Any customized valving beyond that is only done at the factory with a 13 week wait time.

my shocks are installed so I don’t know what numbers are stamped.

i did find out is relatively easily to change out the fluid if you have external resivor by disconnecting the hose.

which I might do at some point as well as add the 50cc of float oil at the gas refill valve .

the valving and part number is stamped on the bottom (if you installed shaft down) on the black cap that holds the dust seal, easily seen when they are installed. The part numbers are just for length, body and shaft size. the valving would be a separate set of numbers but on the same cap.

As far as changing fluid I’m curious to how you would get the oil out of the body from a hole on the top. I’ve rebuillt mine and changed fluid in all 4, it’s not hard to pull the shaft to drain fluid, measure, refill and your able to ensure there is no air in the oil side of the system.

the resivior shocks have a hose with an almost half inch connection ......I’m told the he oil will easily drain out just by disconnecting the hose ......easy to believe else what’s the point of having a resivor.

i don’t now what is in there now.,.boght some 15w and 20w fox oil to vhang bit out some day.

i a tus wanted a set of internal bypass all around but Fox was back ordered 16 weeks.

shocks ride very well...,not like a caddy...but not like an f-450 dually anymore.

no doubt it’ll drain.

If you happen to be monkeying around underneath and don’t mind taking a look at your front and rear(they should be different valving) dust cap I’d appreciate it if you’d let me know what your valving is.....mine still rides like a dually because per Fox they were set up for an f250 and valved are cheaper than new shocks. Thanks

is there a chart somewhere with gvwr vs valve numbers

also, can you post a pic of where the numbers you want are located?

Mine are T/90 which is close to a #30(flutter stack) compression and #90 on rebound side. GVWR is not as important as spring rate, personal preference and driving habits. Ideally the rear valving will be different from the front since the springs will act different due to engine weight. Mine are the same making the rear bounce and shake. My front is tolerable but there is room for improvement. Hence why I’m looking to custom revalve.


This is fox’s chart but others sell thicker and thinner shim stacks.

So I was unable to read any shin numbers .

but , I did learn you can tweak the tide with oil.


the owners flyer says up to 50ml in increments of 10ml added thru the gas charge valve.

so in the search for what kind of oil I learned ther is shock oil, shock fluid, shock bath oil, float oil.

Float oil is 80wt so I decided to use that since float oil is designed for the air cavity.

i wound up putting 30ml in the from and 50ml in the back after s few runs.

so yes, it changed the dampening characterization. Less road detail and more sense of dampening.

so I wound need to play with shins or change the oil from the stock 7/10 weight to something higher.

also, if you get the dsc versions your going to be wasting your money for on toad use. My rears are dsc and I played with the various settings and wound up at the lowest for both dials. The dials st their max will increase high speed up to 60% and increase slow speed up to 120%. 100% increase means double from stock and yes it does feel that way.

so probally with high bed or trailer loads I’ll jump under there and play with the dials.

i can’t read the chart and the link is dead. Any one gave another way of getting the chart.

And yes, you can’t tweak the float oil if you do not have a way of recharging the nitrogen gas. I have a tank and regulator kit made to recharge shocks. I put 300 psi in all. The flyer says you can do up to 509 psi but I do not see how that is possible becuase nitrogen will liquidfy as it gets close to 400psi.