First introduced in 1988, these lifts are still known as the GM systems to have. Four to six inches of lift is available for 1/2 and light duty 3/4-tons (6-lug wheels). The heavy-duty 3/4 and 1-ton (8-lug wheels) system gives five to seven inches of lift.

Lowering the factory upper and lower control arms in relation to the frame brings ride height up. By keeping the factory control arms and torsion bars, we are able to retain stock alignment geometry and ride quality. Note that both systems have a two-inch height range (4" to 6" and 5" to 7"). Front vehicle height is determined by torsion bar adjustment; you choose rear lift height and method to match your choice of front lift.

 The front differential assembly is also lowered to keep CV axle angles in check. This is accomplished by using two, one-piece tubular crossmembers that span from frame rail-to-frame rail. Superlift's new control arm brackets tie into these crossmembers along with "kicker" braces to form an exceptionally strong assembly.

The truck steers via a new "dropped" centerlink that keeps the tie rods in phase with the lower control arms. Two greasable stabilizing links regulate centerlink movement and reduce the load and stress transmitted to the pitman and idler arms.

Superlift's lift method does not increase front track width or require the front differential housing to be trimmed, as is the case with most replacement knuckle system.