YZ250F Knobby Tire (add 6-8Hp for street tires)

YZ250F Knobby Tire (add 6-8Hp for street tires)

YZ250F Knobby Tire (add 6-8Hp for street tires)

MULTIPLE DYNO RUNS HOLDING DIFFERENT THROTTLE POSITIONS- NOT MOVING THE THROTTLE, BUT HOLDING IT STEADY AS THE RPMS CLIMBED