


Tuff Country 16955KN 6" Lift Kit with Knuckles and 1 Piece Sub-Frame with SX8000 Shocks
Tuff Country
16955KN
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Limited Lifetime Warranty
Made in the USA
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Tuff Country 16955KN 6" Lift Kit with Knuckles and 1 Piece Sub-Frame with SX8000 Shocks
Product Details
Description
Engineered by Tuff Country for 1999–2005 Chevy Silverado 1500 4WD and GMC Sierra 1500 4WD, this 6-inch suspension lift kit delivers confident off-road capability with a remarkably smooth street ride. The package includes knuckles, a one-piece sub-frame, SX8000 shocks, and everything needed for a straightforward bolt-on installation.
- Front Lift Height: 6 inches to increase ground clearance and support larger tires.
- Rear Lift Height: 4 inches for balanced stance and stability on rugged terrain.
- One-Piece Sub-Frame: Superior rigidity that reduces squeaks and rattles while enhancing steering feel.
- New Steering Knuckles: Eliminates the need to drop upper control arms, simplifying installation and maintaining alignment integrity.
- Includes SX8000 Shocks: Four high-quality shocks positioned to maximize control and ride quality on and off-road.
- Comprehensive Hardware: Differential drop brackets, torsion bar drop brackets, axle spacers, U-bolts, rear 4" cast iron lift blocks, rear add-a-leaf springs, brake line relocation kit, lateral compression arms and mounts, plus all required mounting hardware.
- Rim Backspacing/ Tire Compatibility: Designed to work with rims backspacing of 4.5" or less and supports 36" x 12.5" tires for aggressive, capable setups.
- Finish: Black powder coat finish for durability and corrosion resistance in demanding environments.
- Warranty: Backed by Tuff Country’s limited lifetime warranty for lasting peace of mind.
This lift kit is designed to preserve a comfortable ride while delivering the height and clearance needed for serious off-road adventures. It enables you to run large-diameter tires without compromising capability, keeps daily-drive practicality in mind, and uses robust, purpose-built components to ensure safe, reliable performance. Ideal for truck enthusiasts who want a bold, confident stance with real on-road manners and proven off-road durability.
| Position | Front and Rear |
|---|---|
| Drivetrain | 4WD |
| Color/Finish | Black Powder Coat |
| Recommended Tire Size | 36" 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 |
|---|---|---|---|---|
| 1999-2005 | Chevy | Silverado 1500 | 4WD | |
| 1999-2005 | GMC | Sierra 1500 | 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.

