for 2009 KTM 125SX $5998 US
63mph
.7 L
110mph
Ktm 125sx
KTM recommends Motorex Top Speed 4T15W50 for the 125SX.
A Ktm 125sx is not a good trail bike because sx means super cross so it is a good racing bike it is good for jumps and racing
40:1
Fouled Plug. Ride it harder!
you dont, drain the oil and start again
stock gearing around 60 mph
bore it out its all you can do to make it a 144