Strewth, must weigh a ton, its going to make the frame look spindly
61,
I know what you mean it may make the frame look too thin.
But I have put the larger diameter and wider center line R6 forks in the front,
and the new ali rear swinger in the photos is going to be shortened by 110 mm and narrowed by 55 mm - 65 mm.
As for the weight difference the aluminum is box section is surprisingly light.
I will give it a go and see what she looks like (watch this space)
I originally wanted a JMC swing arm but I couldn't get one anywhere.
Leslie