theclutch
Go Kart Newbie
If you're running a bigger bar at the rear and the stock one up front you probably want to upgrade the front one as well (like theclutch says). A big rear bar and stock up front works for autocross, but it can get weird at higher speeds.
My suspension is still stock and even with ESP I can tell that the car wants to rotate more than the nannies will allow, but I've never been surprised by it.
What FSB/RSB combination do you have if you upgraded? I am currently shopping. TONS to read, but it seems like Hotchkiss 27 mm front and 27 mm back so far. I want something that has multiple adjustment points.