Has anyone done a chain conversion for a XB12 Firebolt?
Yes. For customers.
I was told a new swingarm has to be fitted - is this correct?
No. It is not correct.
Needed:
Front sprocket
Front sprocket spacer depending on choice of sprockets
Chain-520 or 530 depending on sprocket choice
Rear sprocket
Tensioner
The component most challenging to get correct and provide consistent tension is the chain tensioner. EBR part # G0600.1B7----Suffix RevD. List is $174 and change. Still available. Most other tensioner choices are garbage.