acrapovic

I've got a KTM 625 with Acrapovic exhaust system. I'm willing to do a straight swap for the original item. (Neighbour problems) I'm in Edinburgh, UK.

Hi, i buy ktm duke 125 my 2012, im live in finland. i want to know how many horsepower i can get more if i buy acrapovic slip-on exhaust system on duke? PS. sorry about my bad english but i think its better to write english than finnish;)