I wanted to do away with the 16″ rear wheel and discovered the wheels and forks from an ’82 XS400 Seca would bolt right on.
There were just a couple of issues.
- The SR250 has a 520 chain and the XS400 has a 530 chain. The splines on the countershaft sprocket are the same, but the XS400 sprocket has a shoulder. As a quick hack fix, I made the XS400 sprocket fit by grinding off the shoulder.
- The rear brake backing plate on the XS400 is held using a brake arm attached to the swingarm and the SR250’s backing plate is fixed via a slot in its backing plate. I fabricated a bracket for the XS400’s brake arm and had it welded onto the SR250’s swingarm.
Hello,
I am interested in swapping out my front end and wheels as well. Did you change out the entire front end for the XS400 or the forks only? If the entire front end, did you have to make any changes to the headset bearings?
Thanks!
Tom
Hi Tom,
I did the entire front end because the XS400 forks are larger in diameter. The headset bearings are the same.
Nice! That is exactly what I was hoping to here. I really like your build. Here is what I have going on: http://www.sr500forum.com/forum/viewtopic.php?f=15&t=14452
Nice. I started following your project. I’ll have to start checking the sr500forum more often.