KDXRIDER.NET

Okay, guys, here's a real good question for ya's... I'm doing a KX/KDX Hybrid and have a leftover KDX rear hub I'd like to adapt to my 2004 KX125, so that I'd have a spare wheel in case of flat during a race. Anybody have knowledge about this subject?

my 02 kx wheel mounts on my 05 KDX last time I checked. dunno about the 04 though, just used the spacer specific for the bike. Have you tried swapping wheel?
There was not interference from the brakes

Yeah, done some checking... the '04 bike has a 22mm axle, where the previous years were smaller. I guess I'm asking if anyone knows if the O.D. of the bearings are alike?

look em up

I'm not sure which or what "look-up" you're talking about... is that the usual "on-line micro-fiche" or are you refering to something else? I've heard about another that lists the "interchangeability",but can't remember the address.

Yep, this is just the ordinary OEM micro-fiche... been there, done that. Nothing special....

shows the same bearing used on both bikes though

least on the two I looked at

Yeah, I hear ya. The 2004 kx rear hub uses 3 (yes) bearings, two on the sprocket side. I'm gonna try the bearing house tomorrow, thanks for the help.

When I tried to find bearings to swap a 2004 KDX hub to a 2003 KX hub, I was unsuccessful. The KX bearings are a bigger diameter, inner and outer dimensions, and a different width. I was trying to use the 18 inch KDX wheel on my 2003 KX hybrid. I think the KX changed to a 22mm axle in 2003. Before then the KX and the KDX had the same diameter axle. It might be possible to find bearings to make your KX wheel fit your KDX, but I don't think it will work the other way around. Dave