I think its around 75-80 MPH
The top Speed of a Stock YFZ450 can be 92-93mph but if modified it can go up to 115 mph The top Speed of a Stock YFZ450x can be 95-97mph but if modified it can go up to 117 mph. The YZF450x is faster because it is lighter
Type your answer here... 80
i have a stock sniper 135, the top speed is 130kph.
60 mph stock
with stock up to 85mph
Stock speed is supposedly 42 mph
stock speed is slightly above 160mph
They can be geared to run 100 mph but a stock 450 shoud be 90 to mid 90's.
A stock Yamaha TTR250 with 14/44 gearing can reach a top speed of 87mph or 143kph.
with stock gearing 78 mph
About 70Km/h stock
Most stock top out at around 80 too 100 mph