this should help you.
http://tinyurl.com/msksw5
The 04' Yamaha yz 125 puts out about a total of 33 horsepower.
39
48
it is about 37 horsepower
47
Stock it would be in the 45-47hp range.
YFZ 450 has 39hp
450
stock motor has about 28-30 horsepower
about125mph
275 horsepower.
5