Product Details

Description

Upgrade your rear suspension with the Tuff Country 27900 Rear U-Bolt Kit. Zinc-plated for corrosion resistance, this kit is designed for lifted trucks and SUVs, providing a secure clamp for 2–4 inch block lifts.

  • Includes (4) U-bolts with nuts and washers: Ready-to-install hardware for a complete rear suspension upgrade.
  • Corrosion-Resistant Finish: Zinc-plated steel stands up to road salt and moisture for lasting performance.
  • Dimensions: Bolt Diameter 9/16", Inside Diameter 3 1/8", Length 10 1/2", Bend Type Semi-Round.
  • Lift-Block Ready: Specifically engineered to fit 2"–4" lift blocks, preserving proper axle alignment.
  • Vehicle Compatibility: Recommended for 1973–1987 GMC Blazer 4WD and 1973–1987 GMC Suburban K1500 4WD, plus other 1/2-ton GM trucks.

This U-bolt kit delivers a secure, durable solution when upgrading to a lifted rear suspension. The zinc finish protects against rust, while the precise 9/16" diameter and 10 1/2" length ensure a proper fit with your lift setup. With the included nuts and washers, installation is straightforward, helping you restore confident handling and dependable load support for everyday driving and off-road adventures.


Year Range Make Model Drivetrain Fitment Note
1973–1987 GMC Blazer 4WD
1973–1987 GMC Suburban K1500 4WD Fits 1/2 Ton Models.

Specifications:


Single or Multi-Box Packaging: Single Box
Weight: 7.0 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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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.

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