6" Lift Kit - 99-10 Silv/Sierra 2500LD/01-06 1500HD - Knuckle Kit w/ SL Shocks

6in Chevy/GMC Lift Kit | Knuckle Kit

Starting At*: $1,429 - $1,655
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*within the contiguous US; ground shipments only.
Price*: $1,587.77 $1,428.99
FREE Shipping on ALL ORDERS!*
*within the contiguous US; ground shipments only.
Find a Dealer CALL 800-551-4955
CALL 800-551-4955
$150 USD Factory Rebate through 4/30Now claim rebates and submit with digital upload online @ truckherorebates.com
Find a Dealer CALL 800-551-4955
CALL 800-551-4955

Your Selected Product Fits These Vehicles

  • 2002-2006 Chevrolet Avalanche 2500
  • 2001-2003 Chevrolet Silverado 1500 HD
  • 2005-2006 Chevrolet Silverado 1500 HD
  • 2007 Chevrolet Silverado 1500 HD Classic
  • 2000-2010 Chevrolet Suburban 2500
  • 1999-2000 GMC K2500
  • 2001-2003 GMC Sierra 1500 HD
  • 2005-2006 GMC Sierra 1500 HD
  • 2007 GMC Sierra 1500 HD Classic
  • 2000-2010 GMC Yukon XL 2500
What is this?View Complete Details
  • This is a complete knuckle style lift kit for the 1999-2010 Chevy/GMC 1500HD/2500 4WD
  • Provides 6” lift height
  • Includes related drop brackets, rear blocks, front and rear Superlift shocks or rear 5100 Series Bilstein shocks
What does it include?
  • All brackets, cross-members, shocks, steering knuckles, rear block and u-bolt kit, and hardware required specific to the 1999-2010 2500 NON HD and 2001-2006 1500HD 4WD Chevrolet/GMC.
  • Detailed instruction manual walking you step-by-step through the lift kit installation procedures suitable for do-it-yourselfers (DIY) or professional installation

This Superlift is a complete knuckle style lift kit providing 6” lift height.


  • Replacement knuckles yield the best possible alignment specs with minimal increase in track width.
  • Skid plate connects and strengthens the front / rear crossmembers while protecting the differential
  • Superlift or SS series by Bilstein shocks included
  • Installer-friendly design
  • No replacement front driveshaft required
  • High clearance, one-piece crossmembers, and all other load-bearing bracketry are laser cut from .25" thick plate steel.
Tire Wheel Backspacing Offset
35 x 12.5 16 x 8 4.5 -
35 x 12.5 17 x 9 - -12 to 0
35 x 12.5 18 x 9 - -12 to 0
35 x 12.5 20 x 9 - -12 to +12


IMPORTANT DISCLAIMER: The provided tire/wheel fitments are approximate. Actual dimensions of a given tire size can vary considerably from one brand to another. Manufacturers' wheel offset and backspacing measurement points are not always consistent. Backspacing greatly impacts tire-to-fender clearance when turning. Wheel width and backspacing influence whether the tires protrude past the fenders, and to what extent. Considering these important factors, we recommend that you fit-check your tire/wheel selection prior to purchasing.

  • Installation time: 8 hours
  • Difficulty level: 4 of 5



The drop bracket kits utilize brackets to relocate the upper control arms and require brackets to relocate the steering assembly. Bracket style kits do not increase the front track width but do require a replacement front driveshaft. The knuckle kits use a new knuckle to span the distance between the upper control arm and lower control arm. The steering correction is also built into the replacement knuckles with the tie rod boss being higher versus the stock knuckle. Knuckle kits are easier to install but require aftermarket wheels due to the increased size of the knuckles. Knuckle kits do not require a replacement front drive shaft.



Superlift shocks are twin tube, velocity sensitive hydraulic shocks. Bilstein shocks are a mono-tube gas pressurized shock. The Superlift shocks are coated with a white paint; the Bilstein shocks are a brushed steel body with a nickel and clear zinc finish. Bilstein shocks are more tuned for the application and offer more precise valving.

2 Total
EHR/ a. Verified Buyer
15 December 2018
When real QUALITY matters: SUPERLIFT shine!
Jaime R. Verified Buyer
23 December 2020
good quality
good quality lift with the upgraded shocks. was missing the boots for my back ones which was pictured but not provided. A lot of trimming for this lift, nut great information provided.