Tuff Country 14992KN 4" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks
Tuff Country
14992KN
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Tuff Country 14992KN 4" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks
Product Details
Description
The Tuff Country 14992KN 4" Lift Kit with SX8000 Shocks is a bolt‑on suspension upgrade designed for 4WD GM trucks and SUVs. It increases ground clearance, fits larger tires, and is built for straightforward installation with long‑term durability in mind.
- Lift Height: 4" front / 2" rear lift to level the stance and create room for larger tires while maintaining factory geometry where possible.
- Knuckles: New steering knuckles designed to eliminate the need to drop upper control arms during installation, simplifying the process.
- Sub-Frame: Three-piece sub-frame construction for easier installation and solid handling under load.
- Shocks Included: SX8000 shocks included (with shocks) to match the lift height and provide improved ride quality on- and off-road.
- Additional Components: Includes lateral compression arms for improved axle alignment and stability.
- Tire Fitment: Allows use of 33" x 12.5" tires with proper backspacing, expanding off-road capabilities without compromising on-road feel.
- Installation Summary: Simple bolt‑on installation with an average time of 8–10 hours for a typical 4x4 truck, depending on your exact setup.
- Vehicle Coverage: Designed for 2001–2004 Chevy Avalanche 2500 4WD, 2001–2006 Chevy Silverado 1500HD 4WD, and 2001–2006 GMC Sierra 1500HD 4WD.
- Important Fit Notes: Not compatible with vehicles equipped with Stabilitrak; factory rims will not fit—rim backspacing of 4.5" or less is required; factory length shocks must be replaced with extended shocks to install properly (shocks and boots may be selected in the options).
- Warranty: All Tuff Country lift kits are backed by a limited lifetime warranty for long‑term peace of mind.
This kit reflects Tuff Country’s 35+ years of suspension engineering, combining a competitive price with a robust, purpose‑built design. It’s ideal for riders who want noticeable elevation, the ability to run larger tires, and a more capable vehicle both on rough terrain and paved roads—without sacrificing daily drivability. If you’re upgrading a Silverado, Sierra, or Avalanche on a 4WD platform, this kit provides a reliable path to a confident, lifted stance with a straightforward install and solid aftermarket support.
| Year Range | Make | Model | Drivetrain | Fitment Note |
|---|---|---|---|---|
| 2001-2004 | Chevy | Avalanche 2500 | 4WD | |
| 2001-2006 | Chevy | Silverado 1500HD | 4WD | |
| 2001-2006 | GMC | Sierra 1500HD | 4WD |
Specifications:
Packaging Details
FAQs
Please read our FAQs page to find out more.
Will this part fit my vehicle?
Fitment varies by year, make, model, drivetrain, and lift height. Always use the vehicle fitment selector or refer to the fitment notes on the product page before purchasing. If you’re unsure, our team can help confirm compatibility.
Are Tuff Country products street legal?
Most Tuff Country products are designed for on-road and off-road use, but local laws and regulations vary by state and country. It is the customer’s responsibility to ensure compliance with local vehicle regulations after installation.
Is professional installation required?
Professional installation is recommended but not required. Many products can be installed by experienced DIYers with proper tools. However, improper installation can affect ride quality, safety, and warranty coverage.
Will this affect my ride quality?
Tuff Country products are engineered to balance ride comfort, performance, and durability. Ride quality can change depending on lift height, vehicle setup, tire size, and other suspension components.
Are Tuff Country products covered by a warranty?
Yes. Tuff Country products are backed by a manufacturer warranty that covers defects in materials and workmanship. Warranty terms vary by product type and do not cover damage caused by misuse, improper installation, or normal wear.
Can I run larger tires with this product?
Many Tuff Country lift kits and suspension components allow for larger tire sizes, but maximum tire clearance depends on wheel offset, tire width, and vehicle configuration. Refer to the product details or contact support for guidance.
What is the return policy?
Unused, uninstalled products may be eligible for return within the stated return window. Items must be in new condition and returned in original packaging. Shipping costs and restocking fees may apply.
Who can I contact if I have questions?
Our customer support team is available to help with fitment questions, installation guidance, and order support. Reach out before purchasing if you want to ensure you’re selecting the right part for your build.
Free shipping on Orders Over $75
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Selling Suspension Systems for 35+ Years
Tuff Country EZ-Ride Suspension was incorporated over 35 years ago, realizing the desperate need for quality suspension products in the after market world.