Convert Front Wheel from drum to disc

jmhuff2

1980 Yamaha XS400
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I have found all the parts I need for converting my 1980 xs400 front wheel with drum to 1980 xs400 special wheel with disc. I have found the forks, wheel, and master cylinder. Only thing I can't find is a caliper... Anyone know where I can find one? Am I missing anything else important?
 
Make sure it is not a "Seca" caliper; these are not the same as far as I know despite the fact that both are called an xs400.

There may not be any available. You can also check the classifieds for bikes being parted out or post a want ad.
 
Very unlikely; It was my understanding that almost nothing from the 650 is interchangeable with the 400.

A lot of people make custom brackets and use a more modern caliper.
 
Thanks for all the help! I think I finally pieced everything together. Keep an eye out for my build pics!
 
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