6" Suspension System

6" Suspension System 6" Suspension System 6" Suspension System
4.5 80
  • Zone Offroad C3N

  • Everyday Low Price $1,327.23
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  • Shocks

  • Steering Upgrades

  • Rear Suspension Option

  • Shock Boots

Zone Offroad    View all Zone Offroad products

6" Suspension System

Ready for all your friends to be jealous? The Zone Offroad Products 6" Suspension Lift Kit for 1999-2006 Chevrolet 1500 Silverado & GMC 1500 Sierra pickups is the ultimate in style and performance.

Whether you are just driving to work or playing on the trail, this system was designed to perform. The main crossmembers were designed to match the factory geometry with the new Zone CNC machined steering knuckles creating a true factory quality driving experience. Match this geometry with the heavy duty differential skid plate that locks the main crossemembers together and the compression struts that tie back to the frame and you have a system ready for some serious abuse!

Truck Accessory Liquidators is the largest national distributor of Zone Offroad suspension lift kits for good reason. Our prices are guaranteed low, our product knowledge and friendly service top shelf, and our never out of stock policy assures your Zone Offroad product will ship the same day if your order is placed before 1pm EST Monday -Friday.

Product Features

  • CNC Machined ductile iron knuckles
  • Diffential skid plate included to protect the front differential and lock the crossmembers together
  • Compression struts included to support the main crossmembers for serious off roading
  • 1/4" thick steel used to make indestructable crossmembers
  • 3-point differential mounting system correctly positions the differential so the factory driveshaft can be used

Important Notes

  • Torsion bar unloading tool required.
  • Requires frame bracket modification and differential mount modification.
  • Will not fit HD models. See kit #C4
  • Compression struts won't work with early '99 models with an "S" shaped transmission crossmember.
  • If equipped with 17" stock wheels, 17" or larger aftermarket wheels must be used.
  • Minor welding required.
  • Will not fit old body tyle 1999 models.
  • It may be required to order the rear add-a-leaf kit C6159 for a slightly above level to tail high appearance.
  • Optional Add-a-leaf kit is recommended on Crew Cab models to acheive more level stance.

View Installation Instructions

View Product Warranty

6" Suspension System Specs
Front Lift Height: 6"
Front Lift Method: IFS System
Rear Lift Height: 5"
Rear Lift Method: Block Kit
Install Time Hrs: 8
Difficulty Level 1-5: 4
Wheel Size: 16 x 8
Back Spacing: 4.5"
Max Tire Size: 35 x 12.50
Wheel Size: 17 x 9
Back Spacing: 5"
Max Tire Size: 35 x 12.50
Wheel Size: 20 x 8
Back Spacing: 5.75"
Max Tire Size: 35 x 12.50

This product fits the following applications:

  • 99-06 Chevy 1500 Pickup 4WD Gas
  • 99-06 GMC 1500 Pickup 4WD Gas
Application by vehicle year

Manufacture Warranty Information

  • To the original retail purchaser, Zone Offroad Products guarantees all its products are free from defects in material and workmanship for as long as that purchaser owns the vehicle on which such products were originally installed.  Warranty coverage does not include consumer opinions about such areas as ride comfort, fitment and design.

    Products that wear out or fail due to the use of larger wheels or tires are not covered under this warranty by Zone OffRoad Products. Products installed on a vehicle used in any form of competition or racing are not covered by this warranty. The warranty on commercial application vehicles shall extend only 1 year. No warranty is available on items subject to normal wear and replacement.

    Shock oil seals are subject to wear over time, and use. Therefore are not covered under warranty. However leaking shock seals less than one year from date of purchase, free from contamination, damage, or abnormal seal wear due to misuse can be considered for Warranty.

    This Limited Lifetime Warranty does not apply to products characterized by one or more of the following:

    • Products that have been subject to abuse, neglect, accident, fire, improper installation or adjustment, and corrosion.
    • Products that have been modified or altered outside of or beyond Zone OffRoad Products specifications.
    • Products used in application other than those recommended in the current Zone OffRoad Products catalog or web site or in the instructions accompanying the Zone OffRoad Products product.
    • Products that are used for competition or racing activities. This Limited Lifetime Warranty does not include polyurethane components, product finish and conditions caused by normal wear and use.

    In a situation where a Zone OffRoad Products product is found to contain a defect in material or workmanship within the stated warranty period (unless caused by one or more of the above stated conditions), Zone OffRoad Products, at its option, will either replace the product or repair the product. To make a claim under this Limited Lifetime Warranty, purchaser must:

    • Contact the original place of purchase for further instruction. A Return Merchandise Authorization (RMA) number is required for warranty claims. The RMA number must be displayed on the outside of the product's package. If originally purchased through ZoneOffroad.com, please call 888-998-9663 or email sales@zoneoffroad.comfor further instruction.
    • Include the original purchase receipt (or copy) indicating the place of purchase, date of purchase, and amount paid,
    • Return the product, freight prepaid, as instructed by the original place of purchase. Zone Offroad is not responsible for freight charges.

    NOTICE: If a replacement part is needed before the part in question can be returned, you must first purchase the replacement part. Then, if the part in question is deemed warrantable, you will be credited/refunded.

    Freight charges, installation cost, labor cost, damage to related components, cost incurred due to down time of vehicle, normal wear and tear, lost profits and incidental or consequential damages are not covered under this lifetime warranty.

    This Limited Lifetime Warranty gives you specific legal rights, and you may also have other rights, which may vary from state to state. There are no warranties expressed or implied (including any implied warranties of merchantability and fitness), which extend beyond this Limited Lifetime Warranty described herein.

    NOTICE: Zone OffRoad Products strongly recommends installation of products be done by a certified mechanic. If this does not occur be certain the person(s) installing the product read understand and follow all instructions and warnings pertaining to the application before installation. Installation instructions are also available prior to your purchase.

    WARNING: Zone OffRoad Products does not recommend the use of a body lift in conjunction with a suspension lift 'Kit' or 'System'.


    Installation of suspension lift kits or any other lifting kits or devices will raise the center of gravity. For this reason, Zone OffRoad Products urges that extreme caution be used when encountering driving conditions which may cause vehicle imbalance. Furthermore, the driver's field of vision and judgment will not be as good due to the height of the vehicle. Due to the installation of larger tires, the speedometer will read slower than the actual speed being traveled and more distance will be required to stop the vehicle. It is the owner's responsibility to caution and warn any potential driver of the vehicle about these driving and handling conditions.

    Zone OffRoad Products will not be held liable or responsible for damages or personal injuries resulting from the use of lifting devices and/or related products. The tires and rims should be changed to sufficiently increase the vehicle's total overall width and stability to help accommodate lifting devices.

    Zone OffRoad Products also recommends that the steering system on lifted vehicles be appropriately corrected to reduce steering stress and angles. Once completed, the vehicle should be inspected by a professional mechanic including such areas as the steering system, brake system, speedometer re calibration, and clearance, for tire and suspension travel and tightness of all installed products. Every Zone OffRoad Products suspension kit includes a "Driver Warning" decal and the literature explaining this information which should be read and understood completely before driving, and the decal should be placed in a position clearly visible by the driver and all occupants.

    NOTICE: Most states have some type of law limiting vehicle height. The amount of lift allowed, and how the lift can be achieved, varies greatly. Several states offer exemptions for farm and commercial registered vehicles. It is the vehicle owner's responsibility to check state and local laws to ensure that their vehicle will be in compliance.

    Zone OffRoad Products reserves the right to make changes in design, materials, specifications and product changes as deemed necessary without prior notice and without assuming and obligation to modify any product previously manufactured. Obligation or liabilities will not be assumed with respect to similar products.

    All Zone OffRoad Products material is copyrighted.

    Zone Tow Strap Warranty

    Zone tow straps are GUARANTEED FOR LIFE against breakage. If you snap one of these straps, return it with the original purchase receipt and we will replace it!

    We cannot warrant against straps that have failed due to sharp objects or cuts or normal wear and tear. This warranty does not cover shipping and handling.

Product fits the following applications

  • 1999 Chevy 1500 Pickup 4WD Gas
  • 2000 Chevy 1500 Pickup 4WD Gas
  • 2001 Chevy 1500 Pickup 4WD Gas
  • 2002 Chevy 1500 Pickup 4WD Gas
  • 2003 Chevy 1500 Pickup 4WD Gas
  • 2004 Chevy 1500 Pickup 4WD Gas
  • 2005 Chevy 1500 Pickup 4WD Gas
  • 2006 Chevy 1500 Pickup 4WD Gas
  • 1999 GMC 1500 Pickup 4WD Gas
  • 2000 GMC 1500 Pickup 4WD Gas
  • 2001 GMC 1500 Pickup 4WD Gas
  • 2002 GMC 1500 Pickup 4WD Gas
  • 2003 GMC 1500 Pickup 4WD Gas
  • 2004 GMC 1500 Pickup 4WD Gas
  • 2005 GMC 1500 Pickup 4WD Gas
  • 2006 GMC 1500 Pickup 4WD Gas
6" Suspension System
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