The 2.5″ Performance system is the pinnacle in both performance and ride quality. The larger shock diameter allows for more oil flow through the piston which in turn delivers better dampening and cooling. These shocks are built to the same tolerances and quality as our race proven off road shocks and bolt right on your vehicle. The front coil-overs are adjustable up to 3 inches of lift height and allow fitment of larger tires. The rear springs offer 20% more spring rate for increased load carrying capacity and improved off road capability. Recommended tire size 285/75R16 System Contents: (2) 2.5″ Front Coil-Over Kit with Sway-Bar Relocation Brackets (2) 2.5″ Rear Shocks with Internal Floating Piston (2) 2.0″ Lift Rear Coil Springs