im not ruling it out just because its not in the normal spot for a crack. very off spot for a scrape...

 scrapes can get anywhere , cracks not so much, sand it back a bit and see

 cant exactly sand chrome..

 why? its just a coating

 its a chemcial process

 you can still sand it off , its just plating

 dont think so. im prety sure you have to do a reverse chemical process

 its not like its super hard , thats like saying it cant be scratched or worn away

 so how exactly do i chemicaly treat the metal to remove the layers?

 Doing it chemically would be tough , sometimes expensive. The DIY way would deal with muriatic acid and shit , dangerous stuff. Id say leave it but heres the procedure

I would advise going to a plating shop .

The proceedure is very much the same as removing rust but with different chemical. First, degrease completely and scrub thoroughly with detergent. Mix 1 cup of Muriatic acid with 3 gallons of water in a plastic bucket. NOTE; ALWAYS ADD ACID TO WATER. NEVER WATER TO ACID !!! (It WILL explode) Hang two or three copper wires (#12 or larger) around sides of bucket. Connect these to ground of battery charger. Hang item to be dechromed in fluid with positive lead connected. Be sure part doesn"t touch ground wires. Within a few seconds or minutes, depending on thickness of chrome, it should come clean. More or less time as required. When finnished, wash parts in mild soda water solution to nutralize acid. (Do this right way to prevent rust) As with any caustic acid, handle with care

 congrats on discovering google

 why cant you use it then , derp.

 It's a little bit more then mixing chemicals. I.e. The possibility of spills and explosions is greater then I'm willing to take for a cracks on bmx bars..

 oh theyre only bars , sure who cares then just leave it

 i know i think its getting bigger everyday

 before it wasnt even half that