


Tuff Country 16985 6" Lift Kit with Knuckles and 1 Piece Sub-Frame No Shocks
Tuff Country
16985
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Tuff Country 16985 6" Lift Kit with Knuckles and 1 Piece Sub-Frame No Shocks
Product Details
Description
The Tuff Country 16985 6" Lift Kit with Knuckles and a 1‑Piece Sub‑Frame is a bolt‑on suspension upgrade designed for the Chevy Silverado 2500HD 4WD. It delivers a bold, capable stance with room for larger tires, backed by a trusted brand and a lifetime warranty.
- Lift Height: 6" front / 4" rear, engineered to balance ride quality with ground clearance.
- Knuckles & One‑Piece Sub‑Frame: Includes new steering knuckles that eliminate the need to drop upper control arms and a rigid, single-piece sub-frame to reduce squeaks and improve alignment.
- Materials & Finish: Heavy‑gauge steel with a black powder coat for durability and corrosion resistance.
- Tire Compatibility: Supports up to 35" x 12.5" tires for a more aggressive look and improved off‑road capability.
- Shocks Included: No shocks included; factory shocks must be replaced with extended shocks to install properly. Choose shocks and boots in the Options if you haven’t already.
- Installation Time: Typical installation takes about 8–10 hours with proper tools.
- Warranty: Backed by Tuff Country’s limited lifetime warranty for long‑term peace of mind.
- Vehicle Fitment: Designed for 2001–2010 Chevy Silverado 2500HD 4WD with a torsion bar front end; not compatible with coil‑over front ends or dually models.
- Rim & Exhaust Notes: Factory rims may not fit; a rim backspacing of 4.5" or less is recommended. Exhaust modifications may be required on certain gas‑engine configurations.
With this kit, you’ll gain substantial ground clearance for challenging terrain, improved approach and departure angles, and the ability to run larger tires (35x12.5). The knuckles help preserve steering geometry after the lift, so steering remains responsive and predictable. The one‑piece sub‑frame adds rigidity, reducing chassis flex and squeaks for a more confident ride, while the bolt‑on design keeps installation straightforward for a capable DIY or pro shop project. The combination of robust steel construction, a black powder‑coat finish, and Tuff Country’s lifetime warranty provides long‑term durability and value for work trucks, weekend wheeling, or trail duty.
| Position | Front/Rear |
|---|---|
| Color/Finish | Black Powder Coat |
| Material | Steel |
| Amount of Lift | 6" Front/4" Rear |
| Recommended Tire Size | 35" x 12.5" |
| Year Range | Make | Model | Drivetrain | Fitment Note |
|---|---|---|---|---|
| 2001-2010 | Chevy | Silverado 2500HD | 4WD | Will Not Fit Dually Models. |
| 2001-2010 | GMC | Sierra 2500HD | 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.

