You can't weld chrome - it has to come off.
You could get it rechromed.
Personally, I would grind the chrome off just where you need to weld, and then seriously consider brazing it. Then mask over the brazing and use a DupliColor Zinc primer and Chrome spray to cover the area.
Brazing actually looks nice on an exhaust

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Hol' My Beer, Bubba, An' Watch 'Is


1980 FLH80 Shrine (originally).
Generally speaking, you don't die on motorcycles.
You die a few yards away from what's left of them.
Yes, I have had two bottles of wine. What the fukk is your problem