According to the guys over at MXA the KTM 250SXF pumps out 38.6 horsepower.
51.5 hp
It has 170 horsepower
it is about 37 horsepower
580
347bhp
500
This is according to Motocross Action Magazine Peaking out at 54.3 horsepower is the 2008 KTM 450SXF on the dyno. It is the most powerful 450 motocross bike on the showroom floors.
31 hp mine is a 167 and its about 335 hp and about 600 fpt
The KTM 105 XC which made its debut in 2008 has approximately 24 horse power.
65cc
The 2013 KTM SX has 25 horsepower at 12000 RPM. Older models are less powerful and fall between 21 and 25 horsepower.
52