Product Details

Description

The Tuff Country 14958 4" Lift Kit with Knuckles and 1 Piece Sub-Frame is a bolt-on suspension upgrade designed to lift your Chevy Silverado 1500HD 4WD (and compatible Avalanche 2500 4WD and GMC Sierra 1500HD 4WD) for improved ground clearance and a bolder stance, all while maintaining solid handling and reliability.

  • Lift Height: 4" front / 2" rear lift to provide a balanced, aggressive stance with room for larger tires.
  • Knuckles: New steering knuckles that eliminate the need to drop upper control arms, preserving steering geometry and simplifying installation.
  • One-Piece Sub-Frame: A single, reinforced sub-frame increases overall strength and helps reduce squeaks and rattles for a smoother ride.
  • Shocks: Shocks are not included; extended shocks must be used to complete the installation and achieve proper ride height.
  • Tire Clearance: Engineered to fit up to 33" x 12.5" tires with appropriate rim backspacing (4.5" backspacing or less).
  • Installation: Designed for a straightforward bolt-on install with typical completion in 8–10 hours under normal conditions.
  • Warranty: Backed by a limited lifetime warranty from Tuff Country, underscoring long-term durability and support.
  • Notes: Not compatible with Stabilitrak-equipped models; factory rims will not fit with this kit.

With over 25 years of suspension engineering, Tuff Country delivers a thoughtful, value-focused upgrade that enhances off-road capability and on-road presence without compromising reliability. This kit combines engineered geometry, robust construction, and practical install guidelines to help you achieve a confident, capable Silverado/Sierra setup—backed by a lifetime warranty for lasting peace of mind.


Year Range Make Model Drivetrain Fitment Note
2001-2004 Chevy Avalanche 2500 4WD
2001-2006 Chevy Silverado 1500HD 4WD
2001-2006 GMC Sierra 1500HD 4WD

Specifications:


Single or Multi-Box Packaging: multi-box (2)
Weight: 100.0 lb
Length: 32
Width: 24
Height: 13


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.

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Selling Suspension Systems for 35+ Years

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