That came from Husa's album on the site. There may be a bigger one there or Husa may do magic ?
Yeah, that's a 450 twin. No idea yet of spec but I'll def grill the owner when I see him....
Your frame width you were worrying about will come from the width at the rear mounts and the swingarm pivot. rear shock mounts and the subframe width follow from that. Have you actually done many twinshock frames ? 250mm across the pivot works for a lot of frames. Twinshock arms I often use 1 3/8in OD 2.5mm wall MS. I have a former and can do the slight bend needed. Crosstube in the same. I actually have a press former to do a nice radiused end on the legs prior to slotting them for the axle plates.
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