Check your gas/oil ratio, check your plug and make sure your filter is clean. Next check your carb and make sure the jets are not partially plugged. If all of this checks out, my friend, it is time to rejet your carb.
in most cases yes, you will have to rejet your carb
KTM
KTM 125
yes there is the ktm ktm 85 ktm 110 ktm 125 ktm 150 ktm 250 ktm 500
Try www.bikebandit.com, they have a large selection of oem and aftermarket spark plugs, if you keep fouling plugs try to rejet the carb, or swith to a hotter spark plug.
how do i adjust the tickover on a ktm 125 sx 2007 model
kx 125 is better because KTM 125 or any ktm snap so go with kx 125
Hell no! , The changes in the frames and the plastics are dramitic
Check your premix ratio, carb jetting and make sure you are running the right spark plug.
i got my 2000 ktm 125 sx doin 70 mph stock acrossed a lake
a ktm sx 125 is a great bike mine has never let me donw and they are reely fast bikes 1.KTM 125 The KTM and the YZ are the only two that make them right now.... 2.YZ 125 3.KX 125 4.RM 125 5.CR 125