Tuff Country 16990 6" Lift Kit with Knuckles and 1 Piece Sub-Frame No Shocks
Tuff Country
16990
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Limited Lifetime Warranty
Made in the USA
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Tuff Country 16990 6" Lift Kit with Knuckles and 1 Piece Sub-Frame No Shocks
Product Details
Description
Upgrade your 2007–2010 GM heavy-duty truck with confidence using the Tuff Country 16990 6" Lift Kit with Knuckles and 1 Piece Sub-Frame. This bolt-on suspension upgrade is designed for 4WD Silverado/Sierra 3500s with a torsion-bar front end, delivering substantial height gain, improved steering geometry, and lasting durability backed by a lifetime warranty.
- Lift Height: 6" front lift and 4" rear lift, tuned for 36" tall tires while preserving driveability on the street and off-road capability.
- Knuckles Included: New steering knuckles replace the need to drop upper control arms, helping maintain proper alignment and steering feel after installation.
- One-Piece Sub-Frame: A single, rigid sub-frame boosts overall chassis strength and helps eliminate squeaks and rattles for a smoother ride.
- Comprehensive Hardware: Includes lateral compression arms, mounting brackets, and all necessary hardware for a complete bolt-on installation.
- Tire Compatibility: Supports up to 36" x 12.5" tires for a bold, aggressive stance on rugged terrain.
- Finish & Material: Built from durable steel with a black powder coat for corrosion resistance and long-lasting durability.
- Shocks Not Included: Factory shocks must be replaced with extended shocks to install properly; select extended shocks and boots in the options if you haven’t already purchased them.
- Installation Notes: Designed specifically for 2007–2010 GM trucks with torsion-bar front ends; not compatible with coil-over fronts or Stabil Trak-equipped models; exhaust modification may be required on gas engines; factory rims may not fit—a rim with 4.5" back spacing or less is recommended.
- Warranty & Experience: Backed by Tuff Country’s limited lifetime warranty and over 25 years of suspension engineering expertise.
This kit is engineered to deliver real, tangible benefits: increased ground clearance for challenging terrain, improved approach and departure angles, and a stronger, quieter ride thanks to the one-piece sub-frame. The bolt-on design keeps installation straightforward, while knuckles and reinforced components enhance steering stability during aggressive off-road use. If you’re upgrading for a tougher look and greater capability, this Tuff Country lift kit offers a credible combination of height, strength, and reliability—without compromising everyday drivability.
| Position | Front/Rear |
|---|---|
| Color/Finish | Black Powder Coat |
| Material | Steel |
| Amount of Lift | 6" Front/4" Rear |
| Recommended Tire Size | 36" x 12.5" |
| 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.