Holden RG Colorado Ubolt Kit
When ubolts are tightened to secure the leaf pack in the vehicle from factory, the metal is stretched as a normal part of this process. It is important that ubolts be replaced when a suspension system is changed, as a stretched ubolt has lost its integral strength.
The ubolt will appear tight when re-used, but in fact it isn’t, this puts undue pressure on the centre bolts in the springs, causing them to move or snap which in turn allows the diff to move and the leaves to spread.
The kit inclues all 4 ubolts for the rear of your Holden RG Colorado 4WD 2012 onwards.