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Rough Country

Rough Country 23440 6 Inch Lift Kit | M1 Shocks | Chevy/GMC 1500 2WD (99-06 & Classic)

Rough Country 23440 6 Inch Lift Kit | M1 Shocks | Chevy/GMC 1500 2WD (99-06 & Classic)

PART #

Regular price $1,189.95
Regular price $1,189.95 B2B price $1,189.95
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Read the important notes before ordering
Estimated Ship Date 10/23/2026
  • Free shippingmost orders $500+
  • 30-day returnssee policy
  • Warranty helpwe work claims for you
Not sure it fits? Ask a fitment specialist. Real people, U.S.-based
View full details

Important notes before you order

  1. Only fits models with 6 lug wheels.
  2. Does not fit 2004-2006 models with torsion bar front suspension.
  3. If equipped with factory 17" wheels and purchasing new wheels, the new wheels must be 17" or larger.

TRU specialist notes

From the Trucks R Us fitment and install team, beyond the manufacturer's information.

  • Plan for a professional wheel alignment after installing any lift or leveling kit.
  • Going to bigger tires as well? Speedometer recalibration may be needed, and some tire and wheel combinations need trimming. Check the recommended wheels and tires, or ask us before you order.

Specifications

BrandRough Country
Part number23440
UPC / GTIN8402699170970
Front Lift Height6"
Weight (lbs)180.00lbs
Country of OriginUSA
WarrantyManufacturer’s Warranty Statement

Features

  • Easy bolt-on installation: enjoy a hassle-free installation process with no welding or cutting required, ensuring a smooth upgrade to your vehicle.
  • Maintains factory ride quality: experience enhanced ride comfort while preserving the original factory handling, providing a perfect blend of performance and ease.
  • High clearance crossmember design: the innovative crossmember design offers increased ground clearance, improving off-road capabilities without compromising stability.
  • Levels the front with the rear of the vehicle: achieve a more aggressive, balanced stance with improved vehicle posture, leveling out the front to match the rear for a uniform look.
  • Fabricated blocks for enhanced strength: crafted from high-strength materials, the fabricated blocks provide superior durability and a longer lifespan compared to traditional cast blocks.
  • Anti-axle wrap rear blocks: specially designed to eliminate common lift block problems, these rear blocks maintain stock ride quality while preventing axle wrap for a smoother, more controlled drive.
  • Configurable shock options: choose from our nitrogen-charged n3, v2 monotube, or m1 monotube shocks the power to customize your ride is in your hands!

Fitment

YearsVehicle
2007-20072WD Chevy Silverado 1500 Classic
1999-20062WD Chevy Silverado 1500
2007-20072WD GMC Sierra 1500 Classic
1999-20062WD GMC Sierra 1500

Use the fit check above with your truck selected, or ask a specialist if your trim isn't listed.

Installation

    Free install support from the Trucks R Us tech team, for you or your shop.

    Overview

    Elevate Your Stance. Maintain Your Ride: Rough Country's 6" Lift for 1999-2006 2WD Chevy Silverado/GMC Sierra 1500 models delivers aggressive lift performance while preserving comfort and drivability. This high-clearance kit offers increased ground clearance for tackling tough terrain and easily accommodates up to 35" tires. With its factory alignment and geometry, the kit maintains OEM ride quality, eliminating the nose-down stance for a more aggressive, balanced posture. Built for Strength. Engineered for Precision: Featuring heavy-duty components, including powder-coated steel crossmembers and fabricated rear Anti-Wrap Blocks, this kit is designed for superior durability. The anti-wrap design minimizes axle wrap for a smoother, more controlled drive, and the fabricated blocks are stronger and longer-lasting than traditional cast blocks. The kit maintains factory travel stops for consistent performance on and off the road. No Compromises. All Performance: This kit's easy bolt-on installation requires no welding or cutting, ensuring a hassle-free upgrade. It's compatible with 2WD models and features the option to choose from nitrogen-charged N3, V2 Monotube, or M1 Monotube shocks, giving you the flexibility to customize your ride for the perfect balance of comfort and performance. Installation Made Simple: Simplified components and clear instructions make installation easy, with minimal cutting or drilling required. Installation can be completed in 8-10 hours with standard tools, whether you're doing it yourself or leaving it to a professional. Peace of Mind Included: Backed by Rough Country's Limited Lifetime Replacement Warranty, this suspension lift kit provides peace of mind against defects in materials and workmanship, ensuring long-lasting performance and durability.

    Questions

    Will this fit my truck?

    Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.

    Do you help with installation?

    Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.

    What if the part has a problem?

    We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.

    Can I return it?

    Most items can be returned within 30 days. See our return policy for details.

    Do I need an alignment after installing?

    Yes. Any lift or leveling kit changes suspension geometry, so get a professional alignment after installation.

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    About Rough Country

    Rough Country is a leading manufacturer and distributor of off-road accessories and suspension systems. Built on a foundation of American values and rooted in Tennessee, we use our expertise of trucks, Jeeps, and UTVs to help people drive their passions... Shop all Rough Country