Fox 2.0 RR Rear Shock Compression Question

I've asked in several other places but haven't had any luck so I decided to make a thread for it. Fox 2.0 resi rear shocks:
Do they not bottom out until the shock body hits the bottom mount & there's no shaft left exposed
OR
Do they have an internal stop so they bottom out & there's still shaft exposed?

I'm trying to determine my bumpstop length. I took it out yesterday but wasn't able to flex it all the way out & I got this close w/more flex remaining:

Zoomed in:

I had slid the shaft rubber ring tight against the body of the shock prior to going off road so I know somewhere on my little trip the shock had actually compressed a bit further than this pic due to the rubber ring being further down the shaft.



(Not that I think it matters to this question but the specific part # I'm inquiring about is 985-24-118)

 

Are you worried about bottoming out on the shock? Undo the shock and compress both sides and measure. You may need to get new bump stops or space yours higher to avoid killing those new shocks.

 

Exactly, worried about bottoming out the shocks. I'm trying to figure out the bump stop situation but I'm anal anbout squeezing out every little bit of ext./comp. of suspension & don't want to half ass it. I'd do just as you said, especially since I need to install the roost shields, but it's been raining like nuts here, & is supposed to for the next 5-6 days.
I was hoping for some simple measurements so I could fab up some extensions while it rained & install them when it quits in a week.

 

You could measure your shock at ride height, then measure the distance from your bump stop to the frame. This will tell you if your going to hit the bumps before bottoming out the shock.

 

That was/is my plan IF I knew the shock bottoms out on the bottom mount. If it has an internal 'stop' then it'll bottom out internally before it hits the bottom mount. They come with a "bottom out bumper" on the shaft (that you can see in the pic) so that tells me that they bottom out on the bottom mount but I need to know for sure before I make some extensions.

 

You need to have the right length shock to mach your ride height and pay load.
Set your shock length for use, speed or crawling. Mine are set up for dunes and desert running..
The shock will fully compress, the rubber spacer will stop metal to metal contact so you loose a little bit of shock stroke because of the rubber stop.

With the truck level measure the distance from your bump stop to frame.
Now measure from the bottom of the shock to the top of the eyelet.

This is your down travel, the rubber stop is about a 3/4" thick and compresses.
You want your bump stop to hit before your shock. With my stock bumps they hit at 5" and I have 6" of down travel on a 9" shock. On the dunes it push the rubber spacer about a 1/4" from the bottom and occasionally all the way down, I'm really happy with it. No hard hits, but my shocks are revalved, so my valving shock length and bumps are working really good together....

To get the correct down travel I play with the rubber bushing, washers and spacers on the top of the shock. Fox gives about an extra 1" of thread lenght to play with, so that should be plenty of adjustment.
The shock length needs to match your leaf springs.
For speed use with dakars you need to use foxes 2-3" lift shocks.(= to std FJ length)
I think most of the Tacoma fox shocks are between 8" and 9" of travel. The DSC only come available in stock length and 8.25 stoke so you would need to use spacers on the top of the shock for use with dakar leafs...

To use the FOX DSC I had to use FJ shocks and modify them to get the right length and 9" of travel. Some shops offer this shock set up for Tacomas. I get this shock till FOX makes it available.

 

My DSC bottom out on the lower mount and rubber stops metal to metal contact.

 

His rears have 9.6" of travel, and are for 2.5-3.5" of lift.

 

So with a dakar leafs that should be the right shock length and stock bumps should work fine...
If he fully extend the shock he should have 9.6" from the bottom of the shock to the top of the eyelet.

So if OP has dakar leafs, you should be good to go.. Should be very close to my set up.... 5" travel to the bumps and 6" of shock down travel...
But you have to measure to be sure....
The stock bumps should have about 1" less travel to save your shock.

 

I'm using @MolonLabeTaco as a guinea pig. I have the same shocks but with DSC and dakars waiting in my basement. I wont install them until we have some warmer weather in most likely April. The shocks spec say they bottom out at 15.2" and fully extended are 24.8" so 9.6" of travel. I was just going to measure the length of the shock at ride height and then the distance of the bump stop to frame. This way I'll know if my bumps will hit first or not. I am not going for every inch of travel like I know molonlabetaco is, I just want to make sure I don't kill the shocks.

 

Thanks for your input. I have the stock bump stops installed currently in the pic I posted above and you can see how close the shock got to bottoming out. I messed up and didn't observe the bump stop while I had it flexed like that but I do know there was more flex left.

 

Do me, and you, a HUGE favor!!!! Take the shock out of the box and FULLY compress it for confirmation on it bottoming out the shock body on the bottom mount, with no shaft left exposed. PLEASE?!?!? I believe shr133 is correct but I'd like confirmation.

 

I'll try to do that later tonight when I get home from work. My rears are used and the one needs a rebuild actually so it will be even easier to compress.

 

I'm running the FJ 2.5 DSC 883-26-004

• Adjustable DSC Adjuster
• Extended 23.97 inch
• Collapsed 15.200 inch
• Stroke 8.77 inch

So your shock is almost an inch longer so you will be closer to mid stroke. you have the 3.5-5" lift shock
So you may need a 1" taller bump.....

 

So the shock does not have an internal stop. I compressed the shock and it goes all the way down and stops when it hits the rubber stop on the bottom of the shock.

 

Awesome!!! Thanks a TON!
When I measured the other day I have 4" between bump stop and frame bump plate, 5" of shock shaft exposed.
I think the factory bump stop will work great until I can get out and do fine tuning. This gives me ~4.5" up travel (assuming stock bump stop compresses .5" on a slow bump) and ~4.5" down travel. I don't do any high speed stuff or jumping so this stock bump stop should suit me fine.

 

That seams about perfect..........
You should be ok............

 

My rear ended up taller than I expected. You mentioned extensions for the top. I think I could use some more length as I got the 0-1.5" and should of went the next length longer. I know its a band aid but I would be willing to give an extension a shot for a little while as I complete other projects. I was wondering if any one knew the size and thread type of the stem on a 2.0 IFP so I could maybe get the right ones the first time ?