Hey guys, I am just about to buy my first bike... CBR250 RR I checked out a bike on the weekend and everything was great except for a hairline crack in the exhaust header. The guy has wrapped it with what seems to be foil and a wire of some sort. It wasn't very big in length maybe 5cm, running vertically. Is this sort of thing repairable or would I need to replace the part? Is this common? Here is a pic to indicate where the crack (green line) is... obviously it is not a CBR250 exhaust.