PSR's Holden RG Colorado / 7 / DMAX / MUX ball joint spacer is designed to allow a lift above 2 inch and up to 4. When lifting this platform the upper arm will contact the droop limiter stops on the chassis making a clunk noise and limiting down travel. Our spacer not only allows more droop of the suspension for a larger lift but also rectifies 3 issues when lifting above 2", plunge on the CV joint, negative camber once lifted and ball joints bind, the correction is done via an offset mounting position between upper and lower mounting holes and a 5 degree wedge between the two faces. Ball joint spacer is 100% bolt in with no mods to install and is machined from steel for strength. High tensile bolts are supplied with kit. A spreader plate is also supplied to disperse load on control arm. Anodized black in a long lasting finish to blend to the chassis.