hi, sorry can't read German,
I've been through the tech info and forum, to save a little time thought it would be quicker to ask....
tyres, I see in tech that a letter (can't read) is possibly ok with
130 & 140 x 18 rear tyres is this ok, I'm told NO by tyre shop, but would like to, I'm running the standard narrow spoke xv1000 mags with 120 x 18. Has anyone have experance with this, is the tyre shape change too much, looking at modern sticky pattern, avon, perelli, michelin...
second question is with exhaust 2 into 2 do you need ballance tube, rear pipe length importance, pipe diamater if running reverse cone like sepps 7a and 7b photos, anyone help, need to build my own
I'm in deep south Pacific away from anyone.
thanks

thanks Lars, lots of help.