me360 on epay

[JohnnyO]

That's the real deal Mugen swingarm on the bike.
I've got pics i took of that bike in the pits at the '79 Mr Motocross at Amaroo Park when Mark Pace was racing it.
Back then it had factory Showa piggyback shocks on it.

[090]

Back then it had factory Showa piggyback shocks on it.

Bruce ended up with those. I wonder where they are now.

[JohnnyO]

Back then it had factory Showa piggyback shocks on it.

Bruce ended up with those. I wonder where they are now.

They looked trick..be nice to track them down.

[holeshot buddy]

i know who originally restored the mugen
could find out if its a 360 or 390

[Rossvickicampbell]

remembering some old mags I had - When Mark rode it I am pretty sure it was a 360 - and played with much much later to make it a 390?  I think (general disclaimer there)

[JohnnyO]

i know who originally restored the mugen
could find out if its a 360 or 390

Easiest way to tell would be to see if it has a spacer plate under the barrel.
It would have to be stroked to be a 390 cos the bore is already way oversized.