WHICH BIKE STAYS ABOVE 50 HORSEPOWER THE LONGEST?
CRF450 450SXF KX450F RM-Z450 FC450 YZ450F H
To most MXA test riders, this is the dyno chart that is
most applicable on the track. It registers the rpm where
the bike first cracks 50-horsepower and the rpm where it
drops back below 50 horses mark. We consider this to be
a mathematical representation of the powerband breadth.
You don’t need a Harvard degree to see that the Yamaha
and Husqvarna have the broadest powerbands over 50
horses at 3500 rpm. Of the two, the YZ450F is the most
impressive because it is still making over 54 horsepower
when it signs off (7400 to 11,300 rpm). The Suzuki RM-Z450
and KTM 450SXF are not far behind the YZ450F and
FC450 with a 3400 rpm range. The KX450F is fifth with a
2800 range over 50 horses. Last place goes to the CRF450
with only a 2000 rpm range above the magic five-oh.
If you move the target up to how long the bikes can
produce 55 horsepower and hold it, the numbers are
startling. The Yamaha stays above 55 horsepower for
2100 rpm, the Husky for 1400 rpm, the KTM for 1300 rpm,
the Suzuki for 800 rpm, the Kawasaki for 100 rpm, and
the Honda never makes it to 55 horsepower.
WHICH BIKE MAKES THE MOST PEAK TORQUE?
CRF450 450SXF KX450F RM-Z450 FC450 YZ450F F
(Measured at the highest peak number)
All six 450cc bikes range from 35. 80 foot-pounds at the
high end (Suzuki) to 34. 48 foot-pounds at the low end
(Yamaha). The KTM, Kawasaki and Husqvarna bunch up
in the middle at around 35. 5 foot-pounds.
35. 44 35. 65 35. 80 35. 14
3400 3500 3500