Naw I'm all for adding an exhaust for whatever the reason, but at the end of the day chances are the bike is gonna be traded or sold within a year once she gets the feel of it and wants to upgrade, or she puts it down, in which case you may want to put the new exhaust on when the old one is all mangled.
Just try and tell her to hold off on it till next spring when she has a better feel of the bike and some experience.
Oh yeh, and its still a 250!
__________________
|