PDA

View Full Version : 200x build prep " inverted forks" ,,,am i missing somthing?



200xkwit
04-24-2011, 02:33 AM
alright well im getting everything together for a nice 200x build and i like the idea of inverted forks, so ive been running some numbers around and this is what i cam up with. lmk if im missing somthin.

the stock 200x fork tubes are 33mm so i gave up on those and found out the 350x tripples are 35mm.turns out 00-04 kx85 fork tubes are 36mm. so i can just bore the stock 350x trips out 1 mm and slap those bad boys in there and be good to go looks like. nevermind the brakes and all that jazz for now..what am i missing here? anyone done this?

dksix
04-24-2011, 07:11 AM
The steering stop on the 200X and 350X are different. You will either have to modify the frame of the 200X or the lower triple of the 350X. I had planned on boring the stock 200X triples to accept 350X tubes because my frame is already powder coated. There was plenty of meat left boring the .080" out of the 200X triples, so, IMO you would be fine going .040" on the 350X triples. Are the stock KX tubes the same top and bottom? Some (like my CR250 and CR500 forks tubes are bigger on the lower clamping area than the top.

Billy Golightly
04-24-2011, 09:46 AM
The problem is fork diameters are measured at the chrome slider portion. Not the area where it goes in the triples on inverted ones, which is a lot bigger.

Dirtcrasher
04-24-2011, 10:09 AM
There simply aren't many ways of easily, inexpensively installing inverts and keeping your ride height and rake the same. Custom triples, brakes and so on.

Jason hall sells a triple clamping kit for a reasonable cost, then you buy the forks and springs.........

leevarnado
04-24-2011, 12:29 PM
jason wont make inverts for 83-85 200x,but he might would make them for 83-84 250r

Mosh
04-24-2011, 03:53 PM
Putting inverts on a 200x is futile.
The problem is in the down tube design of the first gen 200x's. They are far too long and weak, to handle the extra rigidness of inverted forks.
A few seasons of heavy trail riding and light jumping, you will more than likely snap the frame in front of the engine because you have now put extra stress on the frame in that area by beefing up the front suspension. Those inverts will transfer more hit to the frame.

You would be better off to just get some good springs, seals, and oil, and get the stock forks working at their peak potential.