The ARB Traction Pack has been designed and developed to provide users with on demand traction to be employed on the roughest of trails. This kit has everything needed to allow the user to achieve true 4 wheel drive on the most demanding of trails. RD117 Dana 44 Air Locker-30 Spline RD117 Dana 44 Air Locker-30 Spline CKMA12 High Performance Air Compressor 171302 Tire Inflation Kit ARB605 Tire Inflator with Gauge