Superlift Suspension Systems Instructional Video: 1999-2007 Chevy/GMC 2500HD 6" Lift System

6˝ Replacement Knuckle System - Superlift’s replacement knuckles yield the best possible alignment specs with minimal increase in track width. Track width is the measurement from outside of tire-to-outside of tire. As with all HD series replacement knuckle style lifts, track width must be increased to gain wheel-to-knuckle clearance. Superlift’s knuckles increase track width a total of only 1.8˝ compared to as much as 3˝ with some competitors. High clearance, one-piece crossmembers, and all other load-bearing bracketry, are laser cut from .25˝ thick plate steel. A new differential skid plate connects and strengthens the front / rear crossmembers while protecting the differential and kicker braces further increase overall rigidity. A brushed stainless steel skid plate is available as an option.