ktm has 3 stator and flywheel combos first its the 2k-1 witch is on the sx models and only puts out about 35 watt tan there is the 2k-2 witch is like the 2k-1 but with an extra weight on for enduro and trail riding.
Than there is the 2k-3, now this one puts out 110 Watt and is what you find on the exc models
according to the above link your bike has a 2k-3, aka 110Watts of power baby
also, usual traltech can only manage to increase the output by 10 or 15 watts. So by logical reasoning you have a 85 to 90 watt stator in your bike.
I also compared the flywheel size of a 250sxf (4t) with with yours any the xcw's flywheel is much bigger.