Yes 3" front 4" rear. My plan is to have the forks use the stock width wheel and spacers, not sure where that will leave the center-center spacing yet. My parts should be here by the end of the year.
I have a set of 650 Zokes that were revalved by Shane at Velocity. They are left over from my MM race bikes. I could part with them as I don't think I'll be using them on my Grom Killer.
I've done a lot of measuring and thinking when it comes to forks swaps and there is really only 1 critical dimension that makes or breaks your whole deal...and that is the internal to internal distance between the forks at the area fat where the uppers and lowers come together. Your tire needs to be able to clear through there (and your fender if you mount it that way.
That said, the most critical dimensions other than the length you want you need to calculate your fit is going to be (if all you have are the forks themselves) is the diameter of the fork legs and the width of the axle mounting areas...then you can work backwards and make the trees exactly to your liking. Make them too wide and the bike looks like crap. Make them too narrow and you have clearance problems.
That said, I have determined that a set of KSR110 forks will mount on a monkey or dax, using the standard g'craft 181mm trees up to a 4"wide tire using either the stock ct70 hub converted for disc or the stock monkey hub converted for disc. That is a 4" wide tire on a max 3" rim
The grom forkset will work as well, provided you swap out the stem for a monkey. No need to even swap out tree sizes as they will clear the same 4"wide tire on a 2.75 wide rim
The fast ace and zokes are in about the same boat as the grom. You cannot use the trees that come with them as they make it to narrow. You can't use the ones that come with the skyteam aftermarket ct70 stuff...they are too wide. YOu need something else. That's what I want to determine next. I gut tells me that a standard 179mm spacing will cut it extremely close because they are slightly wider than groms.
Can you take measurements of your zokes? I'll need the following:
Upper Clamping Area
Lower Clamping Area - and taper measurement like Chad did so you can see where the trees can slide
Diameter at the fattest point where uppers and lowers come together
Thickness of the axle mounting area.
With those, I can understand exactly how wide the triple trees need to be for my application...i'll know all critical dimensions. I'd be willing to buy the forks if you can make the tree to run them...
dascrow · updated 
fatcaaat · updated 
