No , I have the front upper, and rear sway bar. Both were a simple bolt on affair - but 2 sets of hands will definitely speed up the process. I just put the rear lower on, with both bars on I can enter a 90 degree turn on a city street at 25MPH with no "tilt" to the car. If I am feeling a little more daring Im positive I can make the same turn faster upon entry. Yes these bars are great, and I will add either J mans front lower or a rear strut bar in the near future.