If you are talking about a klx 450r, then the answer is 96 mph.
160
About 73 mph.
70mph
at least 100
I have been 77mph on mine
My 2007 450R with HRC kit will run around 85mph
same as the trx 450
it will go from 75 to 80 stock.
With 13/48 gearing should be in the 75-77 MPH range.
I heard the Suzuki has more top end speed but the YFZ is quicker
Approx. 70mph to 75mph is the max. speed of this Honda trx 450r.