brake caliper paint
i have a spray can of black VHT high temp 
a can of proper 2k clear lacquer 
a can of standard self etching primer 
okay to do a thin coat of etch, followed by VHT then 2k clear coat of top 
search the hell out of google, hard to find info about if these spray paints can handle the heat. 
i know the clear 2k will be tough as anything. vht is high temp. has self etch got 200 Celsius ratings?

Rust-o-leum self etch is 200F (93C) capable

https://www.rustoleum.com/~/media/DigitalEncyclopedia/Documents/RustoleumUSA/TDS/English/CBG/Automotive/ATO-52_Self_Etching_Primer_TDS.ashx

 

I used VHT silver direct on the VWII calipers years ago with just some wire-brush roughening. Still looks okay.

imo no need for the vht ...unless its a racing car the calipers wont get that hot , ive done loads with 2k and its fine , my rocker cover must getting near 20 years old done with etch , basecoat and clear ....try to keep the coats thin

think main issue is always rust. im gunna have to put some etch on where I have rubbed the rust off from.

always comes back if no etch.

 

rung paint shop up and they said any self etch will be fine on calipers. lots of myths about

epoxy primer if you want the best