Cowboy's right- it's too new to be in Old's cool. Not really 80's tech either. The '85 Wr250 I had was the first year for liquid cooling, single shock and front disc brake. Husky put a water jacket ed cylinder around their old air cooled bottom end.
When the kickstarter was moved to the right side there was a complete redesign with more design changes in the early 90's then '02, then '08 I think. The 300 came after that.
If it's water cooled, modern suspension, disc brakes it really doesn't belong here. I would expect you would get more relevant info from the Thumper area. I've posted a few two stroke threads there.