Tuff Country 16090KN 6" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks
Tuff Country
16090KN
Pairs well with
Expert Post-Purchase Assistance
Limited Lifetime Warranty
Made in the USA
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Tuff Country 16090KN 6" Lift Kit with Knuckles and 3 Piece Sub-Frame with SX8000 Shocks
Product Details
Description
Lift your 2011–2019 Chevy Silverado 3500 4WD or GMC Sierra 3500 4WD with confidence using the Tuff Country 16090KN 6" Lift Kit. This comprehensive system combines knuckles, a 3-piece sub-frame with heavy-duty skid plates, relocation of bump stops, and SX8000 shocks to deliver serious ground clearance and reliable performance.
- Lift height: 6" front / 4" rear for a bold, capable stance and space to fit larger tires.
- Knuckles included: Front knuckles enhance steering geometry at lifted heights for better handling and control.
- 3-piece sub-frame with skid plates: Multi-piece sub-frame plus skid plates provide added protection and rigidity under heavy use.
- Relocated bump stops: Front and rear bump stops are relocated to preserve suspension travel and ride quality.
- SX8000 shocks included: Complete with SX8000 shocks to deliver steady damping and improved ride consistency.
- Tire compatibility: Supports up to 35" x 12.5" tires, expanding off-road capability without compromising driveability.
- Installation note: Requires extended shocks for proper installation; factory length shocks must be replaced.
- Warranty: Backed by a limited lifetime warranty for long-term peace of mind.
- Vehicle fitment note: Will not fit dually models; a rim with additional backspacing is required for proper fitment.
This kit is engineered to deliver not just clearance, but real-world benefits: improved ground clearance for challenging terrain, a more aggressive stance, and the ability to run larger tires while preserving steering feel and control. With more than 35 years of suspension expertise behind Tuff Country—and a commitment to value and support—this lift kit is designed to perform from day one and endure over time.
| Year Range | Make | Model | Drivetrain | Fitment Note |
|---|---|---|---|---|
| 2011-2019 | Chevy | Silverado 3500 | 4WD | |
| 2011-2019 | 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.