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SKU #: ZON-C12 MPN #: ZONC12

Zone Offroad 5" Torsion Bar Drop Lift Kit 11-19 GM 2500HD / 3500

$1,261.70
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Description
Bring your GM HD truck to new heights with this complete 5" suspension system from Zone Offroad, engineered for strength, proper geometry, and a level stance. At the core of this system are heavy-duty 1/4" steel crossmembers paired with CNC-machined steering knuckles to maintain near-OEM suspension and steering geometry for excellent ride quality and handling. The kit also includes a laser-cut differential skid plate, differential support brackets, torsion bar relocation brackets, sway bar links, rear lift blocks with longer U-bolts, and all required hardware for a complete installation. This lift system is designed to level the truck with no change to factory track width, allowing clearance for up to 35x12.50 tires. No differential trimming is required. Note: Shocks are not included. Custom-valved shocks are recommended for proper ride quality and performance. Optional Configuration Notes Top Overload Option:Available with or without top overload leaf spring support for vehicles equipped with factory overloads. Carrier Bearing Drop Kit (Recommended for 2-Piece Driveshafts):Helps reduce driveline angles and prevent post-lift vibration. Control Arm Upgrade Option:Heavy-duty replacement control arms are available to improve suspension travel and ride quality. Important Notes 2015–2018 models: Factory 20" wheels cannot be reinstalled due to GM wheel design changes. Fits RWD models; front differential components will not be used. Frame bracket modifications required. Stock 17" or 18" wheels cannot be reinstalled. With 20" wheels, 5"–6" backspacing is recommended. Vehicles frequently driven in 4WD on the highway may experience minor front driveline vibration; a dual-cardan front driveshaft is recommended if this occurs.
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Bring your GM HD truck to new heights with this complete 5" suspension system from Zone Offroad, engineered for strength, proper geometry, and a level stance.

At the core of this system are heavy-duty 1/4" steel crossmembers paired with CNC-machined steering knuckles to maintain near-OEM suspension and steering geometry for excellent ride quality and handling. The kit also includes a laser-cut differential skid plate, differential support brackets, torsion bar relocation brackets, sway bar links, rear lift blocks with longer U-bolts, and all required hardware for a complete installation.

This lift system is designed to level the truck with no change to factory track width, allowing clearance for up to 35x12.50 tires. No differential trimming is required.

Note: Shocks are not included. Custom-valved shocks are recommended for proper ride quality and performance.

Optional Configuration Notes

  • Top Overload Option:
    Available with or without top overload leaf spring support for vehicles equipped with factory overloads.
  • Carrier Bearing Drop Kit (Recommended for 2-Piece Driveshafts):
    Helps reduce driveline angles and prevent post-lift vibration.
  • Control Arm Upgrade Option:
    Heavy-duty replacement control arms are available to improve suspension travel and ride quality.

Important Notes

  • 2015–2018 models: Factory 20" wheels cannot be reinstalled due to GM wheel design changes.
  • Fits RWD models; front differential components will not be used.
  • Frame bracket modifications required.
  • Stock 17" or 18" wheels cannot be reinstalled.
  • With 20" wheels, 5"–6" backspacing is recommended.
  • Vehicles frequently driven in 4WD on the highway may experience minor front driveline vibration; a dual-cardan front driveshaft is recommended if this occurs.
Manuals and Guides
Vehicle Fitment
2011-2019 GM 2500HD / 3500 4x4
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
FEATURES & BENEFITS
  • One piece 1/4" steel crossmembers
  • CNC machined ductile iron steering knuckles
  • Differential skid plate for offroad protection
  • 3" Rear block kit for easy installation
  • No Differential Trimming Required
  • The front differential parts will not be used on 2wd models.
Quick Specs
  • Front Lift Height: 5"
  • Front Lift Method: Knuckle Bracket Kit
  • Rear Lift Height: 3"
  • Rear Lift Method: Block U-Bolt Kit
  • Install Time Hrs: 6-8
  • Difficulty Level 1-5: 4
  • Wheel Size: 17x9 or 18x9
  • Back Spacing: 4.5"-4.625"
  • Max Tire Size: 35 x 12.50
  • Wheel Size: 20x9
  • Back Spacing: 5"-6"
  • Max Tire Size: 35 x 12.50
About Zone Offroad Suspension
Zone Offroad Products was developed to bring you quality offroad products at the BEST VALUE in the industry.

Zone is an engineering & manufacturing division of Sport Truck USA, the same parent company that has brought you BDS and JKS, with over 20 years of experience serving offroad enthusiasts. And we will be the first to tell you that Zone's first intention when designing and building a suspension system is not to be the lowest price, thus cutting corners wherever possible, rather about building a complete system that will perform superbly, but at a price point nearly anyone can afford.

Zone offers numerous systems for nearly every application to perfectly suit the stance you're after whether it be a simple 2" leveling kit or a complete 8" suspension system. Browse through our selection of Zone Offroad, and as always, if you don't see what you're looking for or having trouble determining which kit is right for you, do not hesitate to give us a call and we would be happy to assist.