AOA all bikers, hope u are doing great, i have a yamaha junoon i have modified it, but i am facing a problem i hope u can help, i have installed a aftermarket exhaust, but a small portion of the exhaust has to be painted, when i first had the guy painted into black, than i decided to paint into chorme, i brought a spray paint, and paint it, it was good, but after some time it starting to wash off, now, i painted into matte black, which looks awesome, i paint it and leave it to dry for 24 hours, now when it heats there are no bubbles which often come when it ain't dry, everything is good, but than i washed my bike after a week, as i was washing the paint washed off
i don't understand why,
i need to paint some engine parts too, but now i am scared.
HELP PLZ 