Tuff Country 14994KN 4" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks
Tuff Country
14994KN
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Tuff Country 14994KN 4" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks
Product Details
Description
Tuff Country’s 14994KN 4" Lift Kit with Knuckles and a 3‑Piece Sub‑Frame is a purpose‑built upgrade for serious 4WD pickups, delivering true off‑road capability without sacrificing street manners. Designed for 2001–2006 Chevy Silverado 3500 4WD and GMC Sierra 3500 4WD, this kit combines rugged engineering with a straightforward bolt‑on installation.
- Front lift height: 4" front and 2" rear lift for a balanced stance and improved ground clearance.
- Shocks included: 4 SX8000 shocks provide consistent damping and a smoother ride on and off the trail.
- New steering knuckles: Eliminates the need to drop upper control arms, simplifying installation and preserving steering geometry.
- Three‑piece sub‑frame: Multi‑piece design for easier assembly and alignment during the install.
- Includes lateral compression arms: Added control and stability for improved handling under load and during articulation.
- Tire compatibility: Lets you run up to 33" x 12.5" tires for enhanced traction off‑road.
- Complete hardware package: Front and rear cross members, skid plate, axle spacers, U‑bolts, differential drop brackets, torsion bar drop brackets, and brake line relocation kit are all included.
- Finish: Black powder coat finish delivers durability and a clean, rugged look.
- Warranty: Backed by a limited lifetime warranty for long‑term confidence.
- Vehicle fitment notes: Specifically designed for 2001–2006 Chevy Silverado 3500 4WD and 2001–2006 GMC Sierra 3500 4WD; will not fit dual rear wheel (dually) configurations.
This kit is engineered to deliver a safe, effective lift that mirrors a factory ride while unlocking serious off‑road capability. With the knuckle and sub‑frame innovations, install time is practical for a experienced DIYer or professional shop, typically aligning with a bolt‑on process that keeps components integrated and durable. The result is improved ground clearance, room for larger tires, and confident control across rough terrain—all without compromising load performance or on‑road manners.
| Position | Front and Rear |
|---|---|
| Drivetrain | 4WD |
| Color/Finish | Black Powder Coat |
| Recommended Tire Size | 33" x 12.50" |
| Front Lift Height | 4" |
| Rear Lift Height | 2" |
| 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.