Product Details

Description

The Tuff Country 97031 Block & U-Bolt Kit is a bolt-on rear lift solution designed for 1999–2025 Chevrolet Silverado 1500 and GMC Sierra 1500 4WD. It provides a reliable 1.5-inch rear lift by replacing the factory block, helping your truck sit level when loaded and enhancing overall stance.

  • Rear Lift: 1.5 inches (replaces factory block) to improve rear stance without sacrificing ride quality.
  • Block Dimensions: 3" (H) x 2 1/4" (W) x 6 1/2" (L) non-tapered lift blocks.
  • Block Material: Heavy-duty cast iron blocks (some kits may use aluminum blocks) for durability and long-lasting support.
  • U-Bolts: Extended zinc-plated rear u-bolts designed specifically for the Chevy Silverado 1500 4WD, ensuring secure mounting.
  • Hardware Included: Comprehensive installation hardware with washers and nuts for a straightforward bolt-on process.
  • Dimensions: U-bolt size 9/16" x 2 3/4" x 12 5/8" (square) for a proper fit with the factory leaf springs.
  • Installation Notes: Simple bolt-on installation and designed for rear axles only; never use lift blocks on a front axle. For lifts taller than 2", check shock compatibility as extended-length shocks may be required.
  • Vehicle Fitment: Replaces factory blocks on 1999–2025 Chevy Silverado 1500 4WD and 1999–2025 GMC Sierra 1500 4WD.

The 97031 kit is built to preserve a comfortable, factory-like ride while delivering a clear rear lift. The included zinc-plated hardware resists corrosion, helping maintain a clean appearance and strong mounting over time. Whether you’re hauling gear, towing, or simply want a more balanced stance, this kit provides a confident, easy-to-install upgrade that aligns with the truck’s factory suspension geometry.


Year Range Make Model Drivetrain Fitment Note
1999–2025 Chevy Silverado 1500 4WD Replaces Factory Blocks
1999–2025 GMC Sierra 1500 4WD

Specifications:


Single or Multi-Box Packaging: Single Box
Weight: 28.0 lb


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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