I rode a people 50 yesterday, the owner said it was stock.....anyway it got up to 50 mph pretty quick I did not think a stock 50 would do that. It was a 2 stroke...are they that much faster than the 4 strokers? Are the speedos any where close to being accurate, most motorcycles are off about 10% so I figured this was also, even 45 seems fast for a stock 50!