KDXRIDER.NET

I have a 1991 kdx200

i want to change the spring stiifer i can go with
xr400 0.38kg springs 520mm length
or modern 95-05 kdx200 0.35 kg springs 470mm length

just wonder if i go with the xr springs because they are 520mm long instead of the kdx 470mm long spring when the xr springs compress will i end up with coil bind has anyone here had any problems like this.

You will need to make another spacer for the XR springs. Sched 40 PVC works great. Allow for about 15mm pre-load.

So if I make another spacer for the XR springs and allow for about 15mm pre-load.
They will work find without them getting coil bind because their longer. Thanx guys

The 15 mm of spacer really just fills the space and provides very little preload. Of course you can adjust preload until you get the right feel but when I preloaded the springs it was brutal and I couldn't ride the thing. The XR springs are shorter than stock KDX springs a far as I know.

It is my understanding that the springs are longer and require much less spacer. This is one of the reasons that they are more desireable over just heavier springs designed for replacement in the KDX.

This should make them plusher and stiffer at the same time. More stroke area before bind.

My XR springs were much longer than the KDX springs. This allowed me to remove the gitanic metal preload spacer Kawaski puts in, and run a smaller one I made from PVC. The forks worked loads better with the stiffer springs. A lot less nose dive on down hills while braking, handled whoops a lot better too. Still, putting KX forks on was a much bigger difference.

I did the XR springs, and like Colorado Mike says, it was better, but nowhere near as good as the KX fork set-up

Sounds good ill probably go with the XR springs.

Id like to go with the kx front end but it is to much money for me to spend as im 15 years old. I priced it over here in new zealand and the kx front end was gonna cost me $500 (around $300 US)