What temperature rating should I aim for if I were painting the clutch and generator covers - not on a Zed of course - that would be plain silly!

It's a little 125 aircooled single I'm refurbing for dah misses to learn on.
I'm not painting the real hot stuff - barrels/head - so don't need the full-on high temp stuff, so I'm wondering would a 120 degree C rated paint be OK?
Ta