The MetalCloak Lock-N-Load Long Arm 4.5in and 5.5in Suspension is the only Long Arm system that utilizes the Lock-n-load, for bind-free front radius arms, and comes the revolutionary DB3 Rear Geometry correction brackets that enable the best rear control arm angle. Combining technologies with True Dual Rate™ Coils, revolutionary DuPont™ Kevlar® fiber enhanced Duroflex™ Joints, and the 2 piece Durotrak™ bushing equipped Track Bars and you have a system that is unmatched in the off-road industry.