QA1 Coilover Overhaul Kit R222-200QA1's unique torque arm design maximizes performance without the inherent binding issues of other systems, all while achieving a 4" to 7" drop. This bolt in system also offers incomparable adjustability: the watts link, torque arm, trailing arms, bracket mounts, and shocks are all adjustable. Double adjustable shocks offer independent rebound and compression tunability. Great for trucks that will see track time or drivers who really want to dial in