hi there i am just wondering if anyone has or knows if a 98 xr400 swing arm will fit in to a 90 xr600 i have just got my hands on 4oo frame with swing arm shock and brake setup wont to know if it will go together some help would be nice thanks doug

I don't know if the swingarm will fit or not but I just bought a 93 XR600 shock for my 88 and I checked it against a buddies XR400 shock and they are identical I didn't test fit the XR400 shock in my 88 frame but the 93 XR600 shock with piggyback resevoir does fit.

What will you benefit from in switching to an XR400 swingarm?

i am looking at putting disc brake rear got the 400 cheap so was hoping it would fit. yeah i know the shock fit so that is know probs there

IIRC the XR400 swinger is open at the front (engine cases fit between the two front ears of the swinger) while the XR600 swinger is solid across the front (engine not really a stressed member, at least not as much).

i dont think that will be the problem just need to see if the width is the same then go from there

well no good with this project the 400 swing arm is 4mm wider but the shocker is all good and the 400 one is 20mm longer so could be interesting will keep yous posted on how i go