Zone Offroad 2019 to 2021 Silverado / Sierra 1500 4WD 4 inch Suspension System

Zone Offroad
ZON:C42N
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Zone Offroad Lift Kit

Normally ships within 48 hours
  • Important Notes
  • 17" wheels with 4.5" backspacing should be test fit prior to mounting the tire to ensure proper clearance to the steering knuckle/tie rod.
  • All aftermarket wheels should be test fit prior to mounting the tire to ensure proper clearance to the brake caliper.
  • Does NOT fit Diesel Models.
  • Optional front skid plate will not work with 2.7L Turbo Engines.
  • Requires frame bracket modification.
  • Stock 17" and 18" wheels cannot be reinstalled due to tie rod end interference, stock 20" wheels can be reinstalled.
  • Will NOT fit Adaptive Ride Control (ARC) equipped models.
  • Will NOT work with Trail Boss or AT4 models.
  • Due to premature upper control arm ball joint wear being witnessed by our dealer network on stock, leveled, and lifted 2019-2021 GM 1500 trucks (including AT4 & TrailBoss), Zone Offroad highly recommends C2314 upper control arms to be purchased with this lift system
Featured Technology & BenefitsHigh strength 1/4" thick steel crossmembers with differential skid plate.Corrects geometry while offering more ground clearance than other kits on the market.Specially designed steering knuckles offer improved strength while correcting steering angles to maintain ESC compatibility.Maintains ride quality and handling characteristics with bolt-in ready fully welded strut spacers.Can be used with 17" aftermarket wheels or stock 20" wheels (doesn't require 4.5" BS wheels like other kits).
Factory Protection Plus included.
Allows clearance for 35" tires.
Lifts and levels the front to back stance.
Front Lift Height4"
Rear Lift Height2"
MaterialSteel
Front Lift MethodKnuckle & Strut Spacer
Rear Lift MethodBlock Kit
Lift TypeSuspension
Wheel SizeSee Notes
Back SpacingSee Notes
Max Tire SizeSee Notes
Is AdjustableNo
Metal Cutting RequiredYes
Accommodates Factory WheelsSee Notes
Welding RequiredNo
  • Tire/Wheel Fitment:
  • Chevy:
  • 33 x 12.50 on 17x8, 17x9 w/ 4.5" BS
  • 33 x 12.50 on 20x9, 22x9 w/ 4.5-6.25" BS
  • 35 x 12.50 on 20x9, 22x9 w/ 5.5-6.25" BS
  • GMC:
  • 295/65 on 17x8, 17x9 w/ 4.5" BS
  • 295/60 on 20x9 w/ 4.5-6.25" BS
  • 35 x 12.50 on 20x9, 22x9 w/ 5.5-6.25" BS
  • This 4" IFS lift kit takes advantage of the stock suspension design to maintain comfort and handling characteristics, while offering clearance for up to 35" tires. At the heart of this new kit, a pair of 1/4" steel drop crossmembers repositions the stock lower control arms. for additional ground clearance. A differential skid plate reinforces the subframe while adding protection for critical steering and driveline components. A pair of specially designed steering knuckles maintains proper steering geometry and ESC system compatibility, and allows for 17" or larger aftermarket wheels to be installed - as well as the stock 20's. The front differential is secured using a multipoint differential relocation brackets to keep the CV axle operating angles at a minimum. Lift is provided by a set of top-mounted strut spacers that allow for easy installation without the need to disassemble the factory struts. A pair of sway bar drop brackets are used to correct the operating angle of the factory sway bar and to reinforce the rear crossmember and frame. In the rear, a 3" lift block and longer U-bolts lift and level the truck's stance. Rear brake line / ABS line brackets allow the use of factory brake lines.
    Quick SpecsFront Lift Height: 4″Rear Lift Height: 3″Install Time Hrs: 8Difficulty Level 1-5: 4Wheel Size: 35x12.50
    Back Spacing: 5.5-6.25″
    Max Tire Size: 20x9/22x9
    Wheel Size: 33x12.50
    Back Spacing: 4.5-6.25″
    Max Tire Size: 20x9/22x9
    Wheel Size: 33x12.50
    Back Spacing: 4.5″
    Max Tire Size: 17x8/17x9/18x9