Tuff Country 14057KN 4" Lift Kit Upper Control Arm Kit with Rear Blocks & U-Bolts with SX8000 Shocks
Tuff Country
14057KN
Pairs well with
Expert Post-Purchase Assistance
Limited Lifetime Warranty
Made in the USA
Free Shipping on Orders over $150
Tuff Country 14057KN 4" Lift Kit Upper Control Arm Kit with Rear Blocks & U-Bolts with SX8000 Shocks
Product Details
Description
Tuff Country’s 14057KN 4" Lift Kit is a purpose-built suspension upgrade for 2007–2018 Chevy Silverado 1500 and GMC Sierra 1500 2WD models with OE one-piece cast steel upper arms. It delivers a balanced 4" front lift and 2" rear lift, opening up room for larger tires while preserving a near-factory ride.
- Lift Height: 4" front / 2" rear lift to achieve a confident stance and enhanced ground clearance without compromising daily drivability.
- Upper Control Arm Drop / Strut Spacer Kit: Maintains proper alignment and steering geometry after lifting, helping reduce bind and keep handling predictable.
- Shocks Included: SX8000 shocks included for improved dampening and ride quality on highways and rougher terrain.
- Rear Blocks & U-Bolts: Complete rear suspension components for secure mounting and reliable support of the lifted setup.
- Tire Fitment: Supports use of 33" x 12.5" tires, expanding your off-road capability and street presence.
- Rim Backspacing Requirement: Requires rims with 4.5" backspacing; factory rims may not fit with this lift configuration.
- Vehicle Compatibility: Specifically designed for 2007–2018 Chevy Silverado 1500 and 2007–2018 GMC Sierra 1500 2WD with One Piece OE Cast Steel Upper Arms; excludes Magnetic Ride Control and Air Suspension.
- Quality & Warranty: Proudly made in the USA and backed by a limited lifetime warranty, reflecting Tuff Country’s decades of suspension expertise.
This kit is engineered for straightforward installation, offering a factory-leaning ride with added height and tire capability. It’s ideal for truck enthusiasts seeking a sturdy, reliable lift that enhances off-road readiness while maintaining everyday comfort, backed by longstanding American manufacturing and support.
| Year Range | Make | Model | Drivetrain | Fitment Note |
|---|---|---|---|---|
| 2007-2018 | Chevy | Silverado 1500 | 2WD | with One Piece OE Cast Steel Upper Arms. Will not fit with Magnetic Ride Control or Air Suspension |
| 2007-2018 | GMC | Sierra 1500 | 2WD | 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.
-
Shipping Information
Use this text to answer questions in as much detail as possible for your customers.
-
Customer Support
Use this text to answer questions in as much detail as possible for your customers.
-
FAQ’s
Use this text to answer questions in as much detail as possible for your customers.
-
Contact Us
Use this text to answer questions in as much detail as possible for your customers.
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.