I need someone who has a stock swing arm handy, to take a measurement for me. After doing some modifications, I think the gap in the rear closed in on me. If you could measure from the outside to the outside of the axel mounts are it would be an amazing help. And also if between the insides of the shock mounts. If I can figure out how to post a photo again, I'll do it.

Thank you.

Before cutting or welding you should jig the swingarm with spacers the same width of rear wheel and swing arm pivot. Then do mods. If the rear is too narrow then the front is to wide. Made my spacers out of steel pipe.

Yep....been there, done that, made the same mistake.

After making a notch in mine for an 18" wheel and Kawasaki front pulley, I welded mine and found out after painting and installing the wheel the gap closed.  I put a bottle jack in there and spread them apart again - but I really don't know if the spread equally and the alignment is still proper.

I have a new swingarm without the notch all painted up and ready to go.  It turns out that with the double Kawasaki pulley conversion  my wheel is all the way back, and I don't need a notched swingarm anymore.

Yes it is hindsight for both of us - but a spacer needed to be in the axle slot while welding.  At this point you also need to know the offset spacing, as I don't know that the bottle jack method makes the arms spread equally, as one side may be stronger and not as easy to bend as the other side.

Thank you, that gives me a great starting point to work from. I appreciate the input and advise.

After the mods are done & cooled remove the jigs slowly to see if it's good. If not tighten jigs heat center x-bar and let cool , try again at removing jigs. If still not right repeat with heat a slightly larger area & let cool. I had to do mine twice !

Was it modified by Ryca ?

After some thinking and rigging we were able to get it back within the distance that I needed hopefully.