Tuff Country 16994KN 6" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks
Tuff Country
16994KN
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Tuff Country 16994KN 6" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks
Product Details
Description
The Tuff Country 16994KN 6" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks is a purpose-built suspension upgrade for 4WD trucks that want bigger tires and improved capability without sacrificing ride quality. Designed for 2001–2006 Chevy Silverado 3500 4WD and 2001–2006 GMC Sierra 3500 4WD (not compatible with dually models), it delivers a rugged, reliable upgrade with a lifetime warranty.
- Lift height: 6 inches upfront and 4 inches at the rear for a balanced, capable stance.
- Shocks included: Four SX8000 shocks included to deliver controlled damping and a smoother ride.
- New steering knuckles: Steering knuckles designed to eliminate the need to drop upper control arms, simplifying installation and maintaining steering geometry.
- Three-piece sub-frame: A multi-piece sub-frame that eases alignment and installation compared to traditional single-piece designs.
- 35" tire ready: Engineered to accommodate 35" x 12.50" tires for enhanced off-road traction and ground clearance.
- Essential hardware: Includes front and rear cross members, skid plate, axle spacers, U-bolts, lift blocks, differential drop brackets, torsion bar drop brackets, carrier bearing drop kit, brake line relocating kit, and lateral compression arms and mounts.
- Finish: Durable black powder coat for resistance to corrosion and consistent durability in challenging environments.
- Compatibility notes: Factory shocks must be replaced with extended shocks for proper installation; factory rims with standard backspacing may not fit without new wheels (4.5" backspacing or less is recommended); exhaust modification may be required on gas-engine models.
- Warranty: Backed by Tuff Country’s limited lifetime warranty for long-term peace of mind.
- Install time: Typical installation takes about 8–10 hours for a proper, bolt-on upgrade.
The benefits of this kit go beyond a taller stance. With dedicated knuckles that preserve steering feel, a robust 3-piece sub-frame that simplifies installation, and a comprehensive set of components to relocate lines and protect vital systems, you gain stable handling, improved ground clearance, and the ability to run larger tires without compromising safety. The included SX8000 shocks help maintain ride quality on daily drives while delivering dependable performance off-road. Built to endure demanding use, this lift kit preserves durability and off-road capability without sacrificing the comfort you expect from a factory-like ride—making it a practical, value-driven upgrade for your 4WD truck.
| Position | Front and Rear |
|---|---|
| Drivetrain | 4WD |
| Color/Finish | Black Powder Coat |
| Recommended Tire Size | 35" x 12.50" |
| Front Lift Height | 6" |
| Rear Lift Height | 4" |
| Rim Backspacing | 4.5" or less(requires new rims) |
| Year Range | Make | Model | Drivetrain | Fitment Note |
|---|---|---|---|---|
| 2001-2006 | Chevy | Silverado 3500 | 4WD | Will Not Fit Dually Models. |
| 2001-2006 | GMC | Sierra 3500 | 4WD | Will not fit dually model |
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.