My 1200 didn't.
1250 does, does yours?
This thread refers, but without conclusion:
https://www.r1200gs.info/threads/r1250gs-exhaust-single-pop-on-acceleration-any-ideas.49337/
1250 does, does yours?
This thread refers, but without conclusion:
https://www.r1200gs.info/threads/r1250gs-exhaust-single-pop-on-acceleration-any-ideas.49337/