UMI Performance 64-72 GM A-Body Rear Coilover Kit (225LB Spring Rate)

UMI’s rear coilover kit allows for ride height adjustments ranging from a -2" to -3" drop, along with spring rate and damping modifications. The kit includes a reinforced upper mount that bolts directly in place (requiring one additional hole to be drilled) and accommodates a true 2-1/2” racing coilover with a double-shear mount. It also features FEA-designed reinforced lower brackets that bolt directly over the stock rear lower control arm mounts and utilize the existing lower shock hole(s). The 2-hole trailing arm height adjustment enables fine-tuning of the instant center location for drag launches or auto-x/road race rear steer tuning. The Viking Performance shock offers 19-way adjustments for both compression and rebound. The 2-1/2” coilover springs come in various rates suitable for drag use, street driving, and auto-x/road racing. This kit is 100% designed, manufactured, and tested in Philipsburg, PA, USA, using US materials. Please note that this kit is intended for a -2 to -3" Pro-Tour style lowering and is compatible only with factory GM axle housings. It may not fit aftermarket housings such as Quick Performance, Currie, or Moser. Optional add-ons like thrust bearings and a spanner wrench are recommended for easier adjustments. A shock tower brace for additional chassis reinforcement is also available separately. This kit is meant solely for lowering purposes, and welding may be necessary for drag use on vehicles running 10.50 or faster.