Most helpful critical review
on July 18, 2014
This 2.5" Level Lift kit lifted my '07 Sierra 2500 HD as intended AFTER installing the stock adjustment bolts into the torsion keys. The bolts that came with the kit only lifted it approximately 1.5" when maxed out for adjustment. I was disappointed with that but have read that I'm not the first guy to experience this. I probably could have gotten that out of the stock keys. Laying the Pro Comp key on top of the stock key, or vice versa showed very little difference in appearance. I was expecting to see more of a rotation with the hex holes aligned with each other. I kept the Pro Comp kit and used the stock adjustment bolt to get the desired 2.5" of lift, but I'm wishing I had tried to adjust the stock keys first, just for a comparison. The truck does ride slight stiffer with less sway in turns, but also definitely takes the bumps harder. But that is to be expected with this mod. I put on new chrome wheels and new tires at the same time, got a front end alignment, and my HD looks sweet with this lift as part of the package. On a side note, using the proper torsion key removal tool makes the job much easier and safer to perform. After seeing the amount of pressure the torsion bar and key is under, I highly recommend purchasing or renting this tool to do the job right without injuring yourself using other tools.