These upper differential supports provide additional strength and rigidity to the crossmembers, while allowing the use of 12″ OEM brakes.  This is a must-have upgrade when upgrading to a 12" brake system on an earlier model vehicle.  
Fits all models of H1 Hummer and (pre-REV) HMMWV
* Price is for a pair (front and rear) and come powdercoated in semi-gloss black.