Stock 1998 CR500 vs Mod 1989 CR500

I figure the louder one, with less muffler, is the hotted up one, BUT it would be a better video if each bike was clearly identified and some specs on the motors supplied along with the lap times.....

Along with the parts used, prices current as of when and where, and the work done by whom etc.

Because to most people these are just noisy dirt bikes, that some people love and most people hate.