interesting reading

[dave32]

Not KR specific but its a 2stroke and it covers everything from riding style,chassis setup and engine setup/tuning.

http://race.commline.com/articles/TeamMadDog.html

[TwoStroke Institute]

Could just get a Rotax disc valve 125 and ride off into the distance. As a bloke told me when he got passed by Gary McCoy at a practice day before a GP many moons ago

Never before seen a 125 drift the rear and wheelie out of a corner until McCoy passed me