Yamaha didn't start producing the "WR250R" until 2008. They did however produce the WR250. So I guess the answer to your question would be zero.
fast
Yamaha sniper
The weight of a Yamaha 250 can vary depending on the specific model. For example, the Yamaha YZ250 dirt bike weighs approximately 227 pounds (103 kg) without fuel. On the other hand, the Yamaha WR250R dual-sport bike weighs around 291 pounds (132 kg) without fuel. Always check the specifications for the exact model you're interested in for precise weight details.
fast enough to kill you
a Yamaha blaster can go around 75-80
no warriors are twice as fast
if it is a Yamaha wolverine 450 it will go 61mph
188MPH
The 2009 Yamaha Blaster doesn't exist. Yamaha discontinued the blaster in 2007
Not that fast but about 50 with no upgrades
the Yamaha ttr125 goes about 50 to 55 mph