Give your classic GM truck an aggressive stance with the Zone Offroad 6” Leaf Spring Lift Kit, engineered for 1973–1976 Chevy and GMC K20 and K25 4WD gas models. This complete suspension system delivers the clearance needed to run up to 37” tires while maintaining dependable ride quality and proper suspension geometry for both street and trail use.
Featuring heavy-duty replacement front leaf springs, rear add-a-leafs, lift blocks, and steering corrections, this kit is built to handle the demands of daily driving while offering show-stopping looks. Nitro Series shocks are included to provide controlled damping, while brake line relocation brackets and extended U-bolts ensure a well-rounded, installation-ready system.
Features:
- Heavy-duty replacement front leaf springs improve ride quality
- Rear add-a-leaf increases lift and load carrying capacity
- Black e-coated U-bolts resist corrosion and wear
- Brake line relocation brackets retain factory brake lines
- Steering components maintain proper handling geometry
- Clears up to 37-inch tires with proper wheel selection
- Includes Nitro Series shocks for controlled performance
- Designed for classic GM 4WD leaf spring suspensions
Specifications:
- Brand: Zone Offroad
- Product Type: Suspension lift kit
- Front Lift Height: 6 inches
- Rear Lift Height: 6 inches
- Front Lift Method: Leaf spring
- Rear Lift Method: Block and add-a-leaf
- Shock Type: Nitro Series twin-tube shocks
- Drive Type: 4WD only
- Fuel Type: Gas engines only
- Maximum Tire Size: Up to 37 inches
Included:
- (2) Front Replacement Leaf Springs
- (4) Nitro Series Shocks
- (1) Rear Add-A-Leaf Kit
- (2) Rear Lift Blocks
- (4) Rear Extended U-Bolts
- (1) Brake Line Relocation Bracket Kit
- (1) Steering Component Kit
- (1) Bushing Set
- (1) Installation Hardware Kit
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Fitment:
- 1973–1976 Chevrolet K20 Pickup 4WD Gas
- 1973–1976 GMC K25 / K2500 Pickup 4WD Gas
Note:
- 3 Year Warranty
- Auxiliary Shocks? If your vehicle is equipped with factory auxiliary front shocks, you will need to order auxiliary shocks to complete your kit.
- Driveline Notice: On some models, the front driveshaft may need to be clearanced at the double cardan joint to prevent binding.
- Some models may require the transfer case drop kit C5001 listed in the accessories to alleviate driveshaft vibration.