Transform your truck’s stance and off-road capability with the Zone Offroad 6” Torsion Bar Drop Lift Kit for the 1999–2006 Chevrolet Silverado 1500 and GMC Sierra 1500 4WD Gas models. This complete suspension system delivers increased ground clearance, improved handling, and the tire clearance needed to run up to 35” tires. Engineered to maintain proper factory geometry, this kit is built for real-world durability on and off the trail.
Featuring precision-machined steering knuckles, heavy-duty front and rear crossmembers, differential relocation brackets, and a reinforced skid plate, this lift system ensures proper driveline angles and reduces component stress. The included Nitro Series shocks deliver nitrogen-charged twin-tube damping with velocity-sensitive valving for improved ride comfort, stability, and control on rough terrain or daily driving.
Features:
- High-strength front and rear crossmembers maintain correct control arm geometry
- CNC-machined steering knuckles correct steering angles and increase durability
- Nitro Series shocks provide improved damping and stable off-road performance
- Differential relocation brackets optimize CV angles for reduced wear and stress
- Heavy-duty skid plate protects differential from road and trail obstacles
- Rear block and U-bolt lift system maintains towing capability and rake
- Support kicker braces increase frame rigidity and structural strength
- Allows clearance for 35" tires with proper wheel backspacing configuration
Specifications:
- Brand: Zone Offroad
- Front lift height: 6 inches
- Rear lift height: 5 inches
- Front lift method: Torsion bar drop with HD crossmembers
- Rear lift method: Lift blocks and U-bolts
- Shocks included: Nitro Series
- Shock design: Nitrogen-charged twin-tube
- Max tire size: 35 x 12.50
- Drive type: 4WD
- Fuel type: Gas engines only
- Skid plate material: Heavy-duty steel
- Steering knuckles: CNC-machined for proper OE geometry
Included:
- (2) Nitro Series Front Shocks
- (2) Nitro Series Rear Shocks
- (2) Heavy-Duty Front Crossmembers
- (2) CNC-Machined Steering Knuckles
- (2) Differential Drop Brackets
- (2) CV Axle Spacers
- (1) Front Differential Skid Plate
- (2) Rear Lift Blocks
- (4) Rear U-Bolts
- (2) Rear Crossmember Support Kickers
- (1) Hardware Kit
Fitment:
- 1999–2006 Chevrolet Silverado 1500 4.3L 4WD Gas
- 1999–2006 Chevrolet Silverado 1500 4.8L 4WD Gas
- 19999–2006 Chevrolet Silverado 1500 5.3L 4WD Gas
- 1999–2006 GMC Sierra 1500 4.3L 4WD Gas
- 1999–2006 GMC Sierra 1500 4.8L 4WD Gas
- 1999–2006 GMC Sierra 1500 5.3L 4WD Gas
Note:
- 3 Year Warranty
- Not for 1999 Classic/Old-Body-Style trucks
- Will not fit 1500HD or Quadrasteer-equipped models
- Quick cab trucks may require add-a-leaf for optimal rake
- Some setups may require new driveshaft if vibration occurs
- Stock 17"/18" wheels cannot be reused due to tie-rod clearance
- Recommended backspacing: 4.5"–5.75" depending on wheel diameter