The Rough Country Performance 2.2 series shock absorbers will not only give you a smooth ride when driving on the highway but will give you the very best when off-roading. These shocks are designed for larger aftermarket tire/wheel combinations. The shocks absorbers contain an internal rebound disc spring which is great for energy absorption during suspension extension. For added protection and durability, an external jounce bumper on the reverse side will create greater energy absorption during suspension compression.