Good idea to paint my exhaust??

If you do the proper prep work and make sure it's super clean, it should last a long time. A lot depends on how good of a job you do with each step.
 
high temp powder will hold up to 1000* and will not chip and peel off like these so called "1200 degree" spray paints






i tried this on my ladys raptor and it all peeled off in the first 5 rides

Thanks for the input. The high heat powdercoat gave me an idea. Have my pipe red coming out the motor and have it fade into black.