If you look at folks who successfully track and autocross their cars I am pretty sure you won’t find a single set of traction bars.The car is mostly for cruising around and may see the track lightly. It has 500hp. I have the traction bar and the rear sway bar that comes in the kit with the front one from Hellwing. The fron sway bar is thicker than the original, other than that everything is stock in the front and rear. I'm adding the traction bar but I don't know if i need the rear sway bar or if it can be added.