The fastest dirt bike in stock is a Suzuki But most lots of people don't agree they normally think its the ktm that's all a opinion.
you
ktm
No, I think the Honda 650cc dirt bike is the fastest or a GP racing bike.
no kawasaki is the fastest as i know
rm 65
Ktm 125sx
RX 2-stroke
Marcus deleon James Stewart
Suzuki and Kawasaki are top on the list.
132.314 mph
By my research Ktm makes the fastest! This bike would be 2009 ktm 65cc Sx.
stock, its probably the GSXR1300 or the ZX14R