The rules state that to be Production at least 500 units must be sold in a given year from a "normal" dealer. I'm not aware of a 4 cyl 250 that sold here in the USA.
Some LSR venues seperate 2 stroke from 4 stroke. You know the ones that don't because the records that stand are from the 70s ....
Ahh, makes sense. I race with OMRRA, I am not sure how they do that as far as production bikes go. I know a couple months ago there was a guy racing a TZR 250, not sure if it came from Europe or Canada.
2007 Kawasaki EX650 street/track 636 forks - Hyperpro shock - Woodcraft - LeoVince - Dynojet
2003 Yamaha R6 race/track Ohlins - Arata - Vortex - Woodcraft - Dynojet
OMRRA Expert # 440