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7.5in GM NTD Suspension Lift Kit

GM 7.5in Suspension Lift Kit [253X]
GM Suspension Lift Kit [253X] Installed
GM Suspension Lift Kit [253X] Installed
In stock
SKU: 253X | Brand: Rough Country
Make sure it fits!


Right off the lot The GM 2500 HD has an impressive stance and a killer look, inspiring Rough Country to build a kit that would add crucial enhancements while taking nothing away from this sharp looking, new model truck. The 7.5" N2 Suspension Lift for GM 2500 HD features a Non-Torsion Drop Design for better clearance and handling while maintaining proper angles in a "clean and tucked away" fashion. This kit also features Heavy Duty components worthy of the HD badge; With 1/4" thick steel crossmembers, 1/2" thick NTD Brackets, and a durable, thick Skid Plate - all laser-cut and powder coated in our "Hammer Black" color to match the factory components. Installation requires no drilling or modifying the differential, meaning no "invasive" mods to your new toy. A set of braided Stainless Steel Brake Lines hones the whole package in.

Our innovative HD lift doesn't just look like it came from the showroom floor, it drives like it did too. This kit doesn't widen the stock track width, and the Non Torsion Drop design keeps everything at optimum angles, leaving that factory feel to handling corners and turns. A full set of Nitrogen charged N2.0 Shock Absorbers offer 10-Stage velocity sensitive valving, and are custom valved for each model kit we offer - meaning you get a set of shocks designed to preserve your factory ride quality.
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  • Download Instructions
  • Install Time: 8 - 10 hours
    Average estimated install time peformed by a professional shop or mechanic.
  • Features

  • Maintains factory ride quality
  • Maintains the stock track width
  • Torsion bars stay in the factory location
  • Unmatched ground clearance
  • Axles maintain factory position and angle
  • No drilling or modifying of the differential
  • No drivetrain or exhaust modifications required
  • Includes application valved N2.0 series shock absorbers which offer the best in balanced performance for on and off-road use.
  • Notes

  • Does NOT fit dually models.
  • Models equipped with factory rear overload springs require longer u-bolt kit (7664) - available below.
This product features Rough Country's Lifetime Replacement Warranty. All products are warranted to be free from defects in material and craftsmanship for the life of the vehicle if utilized in accordance with the manufacturer's instructions for installation and operation of said products. For complete details and coverage information please click here.
We are proud to offer Same Day Shipping. If you place your order before 4pm (cst) your order will be shipped that day. Parts ordered must be in stock for the order to ship. Approximately 97% of all orders placed leave our warehouses within 24 to 48 hours(not including weekends & holidays). For complete details please click here.


  • Front
  • Lifted knuckles
  • Front crossmember
  • Rear crossmember
  • Differential drop brackets
  • Differential skid plate
  • Non-torsion bar drop brackets
  • Sway-bar link extensions
  • Sway-bar brackets
  • Upper shock brackets
  • Extended brake lines
  • Hardware
  • Rear
  • Lifted blocks
  • U-bolts
  • Bump-stop brackets
  • Brake line brackets
  • E-brake line bracket
  • Hardware
  • Shocks
  • (4) Premium N2.0 series

Fitment Table

Years Drive Make Model
2011-20154WDChevrolet2500 HD Pickup
2011-20154WDChevrolet3500 HD Pickup
2011-20154WDGMC2500 HD Pickup
2011-20154WDGMC3500 HD Pickup
Always check the product's overview, for more important fitment information


Tire Wheel Backspacing Offset
315/70 R1717x9--12 to 0mm
315/65 R1818x9--12 to 0mm
315/55 R2020x9--12 to +12mm
May require modification to the front valance
Models equipped with factory 17-inch wheels must run 17-inch or larger wheels if changing to aftermarket wheels
Due to differences in manufacturing, dimension and inflated measurements, tire and wheel combinations should be test fit prior to installation.


  1. Great look and Stance - Posted by: @BIG2500HD (5/29/15)

    Install was pretty straight forward. A little difficult on the front cross member as the width of the mount needed to be a bit wider to accept the factory lower control arm. Other than that small issue the lift went on without any issues. Looks and rides great.

  2. Awesome - Posted by: Dirtymax (5/28/15)

    This kit looks great on my 2015 Denali HD with 37s the ride is factory like and im very happy with it great buy

  3. Game Changer - Posted by: @hailstomyqueen (4/8/15)

    This product put my 2011 GMC 2500HD w/ 35x12.5 above the rest. Easy to install myself and great quality for the unbearable price.

  4. Great look and ride - Posted by: @beardflexin (2/21/15)

    Gave my truck a great stance and the ride quality and steering haven't changed a bit. Very happy with this kit!!

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