I have an M85 frame from an Alpina and wonder how different, if at all, it is to the Sherpa of the same year. I have a Sherpa motor for the same year and would like to make into a complete Sherpa if the rake, trail and wheelbase are the same.

I seem to remember the M80 and the M85 frames are the same. I think the only change was the triple clamps on the Alpina are different.

Hi seat , tank , different ,,, sounds like idea cheers

Alpina M85 was available 1971-74. Which of these years / what model is your Sherpa engine ?

Factory parts book (later issue) for Sherpa 250 M80 lists M85 frame and also upper/lower yokes (triple clamps) as replacement parts ; I take this to mean they are mutually interchangeable, even if not actually identical.

I've got both and they sure do look the same