bogging

Hi guys I have a 2002 ktm 125sx and it’s bogging before powerband. When I go like 1/4 throttle its boggin but when I go full throttle it active the powerband fine. It is a air-fuel mixture adjustment? I think my bike has a lean bog or i don’t know what going on. Maybe do I have to jettin? I...

Hey Guys, I own a Ktm Exc 125 2002 with keihin 38 pwk and is bogging lowend. if i roll on idle an open the throttle to fast ist bogs. got new: -topend 10h now -new reeds -new ignition coil -new seals - new exhaust packing sorry for the bad english. i just need help;)

I have a 2001 kx125 this is running what pro Circuit recommend for jetting (I have a platinum pipe), but the bike seems to run rich in the low rpms and then up top it seems to have sudden surges once in a wile when I do a pull. I don’t want to ride the bike if it is going to damage the motor...

Hey guys, I just rebuilt the top and bottom end of my KX125 and need to re jet the bike. I repacked the exhaust, cleaned the pipe and my jetting specs are 45 pilot, 350 main, stock needle on 2nd pos, air screw 1.5 turns. The bike seems to bog down low and when I get it into the power band it...