KTM 450 - 530 Water Pump Seal Replacement
A common problem with the 450-530 KTM's is a leaking/weeping water pump seal, but the fix is simple and cheap.
KTM 450 - 530 Won't Start With E-Starter
Adjusting the torque limiter to resolve non-starting with an electric starter.
KTM 450 - 530 Oil Pump Upgrade
KTM upgraded the oil pump drive on the 2011 450 & 530 EXC/XC-W models. Some people have experienced failures with the older parts. This upgrade is cheap insurance.