about 90 mph
go to google, type in ktm 450sx quad photos and you will have lots of pictures of ktm four wheelers
Not too fast
Depends on the bike.
63mph
Not as fast as a GSX-R1000
108.5mph
around 80
A ktm 65sx will go about 43 but with fmf pipes it will go close to 50
Very Slow! KTM's are NOT worth the money AT ALL!!
Extreamly fast, my friend got clocked at 90mph
around 160-165mph.
130mph