Depends on maintenance, Kawi will go faster longer without maintenance.
Also depends on which bikes you are comparing, but follow the link below for the MXA 2010 450 shootout.
either a kawasaki ktm Yamaha Honda
Honda, Yamaha, Kawasaki, Suzuki, KTM
They are quicker and more powerful and are like the Ferrari of the dirt bikes and are built for speed and racing and the Honda is like the Holden and Ford and is a basic dirt bike!
the ktm 65 sx goes 60mph and its faster then the other 65s
KTM
in my mind i think Kawasaki is then KTM then Honda then Suzuki then Yamaha but my fiend thinks Honda is the best so i would reccomend either a Kawasaki or Honda (pick Kawasaki):)
Aprilia, BMW, CCM, Cobra, Ducati, Gas Gas, Honda, Husaberg, Husqvarna, Kawasaki, KTM, Polini, Suzuki, TM Racing, Vertemati, VOR, Yamaha that are all active dirt bike manufacturers. There are also numerous companies that no longer manufacture dirt bikes.
KTM 125
I myself have a KTM 85 and love it. KTM is by far the best for little motocross bikes but is not a good beginners bike. The KTM is also bigger than the Kawasaki and overall a better bike. I would chose KTM 85 for someone 10 to 13 years old.
Yes you can say that, but there many other popular brnds like Yamaha, Honda, Kawasaki and Suzuki. motorcyclesdir.com/
Get a KTM
ktm