Tuff Country 14056KN 4" Lift Kit Upper Control Arm Kit with Rear Blocks & U-Bolts with SX8000 Shocks
Tuff Country
14056KN
Pairs well with
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Limited Lifetime Warranty
Made in the USA
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Tuff Country 14056KN 4" Lift Kit Upper Control Arm Kit with Rear Blocks & U-Bolts with SX8000 Shocks
Product Details
Description
Lift your Silverado or Sierra 1500 with confidence using the Tuff Country 14056KN 4" Lift Kit with SX8000 Shocks. Designed for 2007–2013 4WD models equipped with OE one-piece cast steel upper arms, this kit provides a clean, level stance and the ability to run larger tires without sacrificing ride quality.
- Lift configuration: 4" front lift and 2" rear lift to level the vehicle and improve ground clearance
- Upper control arm drop / strut spacer: engineered to preserve suspension geometry and provide a smooth, controlled ride
- Shocks included: SX8000 shocks are included to deliver reliable dampening and a balanced ride
- Rear suspension components: rear blocks and U-bolts are provided for secure, durable rear height
- Tire compatibility: supports up to 33" x 12.5" tires for enhanced traction and appearance
- Rim/backspacing requirement: requires rims with 4.5" backspacing; factory rims will not fit with this kit
- Vehicle compatibility: specifically designed for 2007–2013 Chevy Silverado 1500 4WD and 2007–2013 GMC Sierra 1500 4WD with OE one-piece cast steel upper arms
- Installation notes: no drilling is required, and the kit is intended to be a straightforward upgrade
- Warranty: backed by a limited lifetime warranty, reflecting Tuff Country’s commitment to durability
- Made in the USA: proudly manufactured in the United States for quality you can trust
The result is a balanced, level stance that enhances on-road stability while expanding off-road capability. With the included SX8000 shocks and purpose-built upper arm/drop design, you’ll enjoy a more composed highway ride and improved wheel travel when you tackle rough terrain. The kit’s 4.5" backspacing rim requirement ensures proper fitment and avoids interference, so planning wheel selection ahead of install is essential. Tuff Country’s experience—over 35 years in suspension systems—translates into thoughtful engineering, straightforward installation, and a product you can rely on day after day.
| Year Range | Make | Model | Drivetrain | Fitment Note |
|---|---|---|---|---|
| 2007-2013 | Chevy | Silverado 1500 | 4WD | with One Piece OE Cast Steel Upper Arms. Will not fit with Magnetic Ride Control or Air Suspension. |
| 2007-2013 | GMC | Sierra 1500 | 4WD | with One Piece OE Cast Steel Upper Arms. Will not fit with Magnetic Ride Control or Air Suspension. |
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.