Product Details

Description

The Tuff Country 13743KN 3" Lift Kit is a heavy-duty suspension upgrade designed for 1988–1991 Chevy Suburban K2500 4WD and GMC Suburban K2500 4WD. Built on Tuff Country’s 35+ years of suspension engineering, it raises ride height by 3 inches with a focus on durability and reliability, backed by a limited lifetime warranty.

  • Lift Height: 3" front and 3" rear lift, engineered to accommodate larger tires (33" x 12.5") for improved ground clearance and skin-off-road capability.
  • Front Springs: Heavy-duty front springs designed to handle snow plows, big-block engines, or heavy aftermarket bumpers without compromising ride quality.
  • Rear Springs: 52" rear springs provide robust load support and maintain balanced stance across the axle for stabilized towing and hauling.
  • SX8000 Shocks: Includes SX8000 shocks engineered to deliver dependable dampening and control with the lifted setup.
  • Noise Reduction: Teflon pads integrated to minimize noise and squeaks for a quieter ride.
  • Bushings: Polyurethane bushings included with springs to improve durability and steering response over time.
  • Vehicle Fit: Specifically designed for 1988–1991 Chevy Suburban K2500 4WD and 1988–1991 GMC Suburban K2500 4WD; will not fit diesel engines; tailored for 3/4-ton models.
  • Installation Note: Factory front and rear shocks must be replaced with extended shocks for proper installation (extended shocks selected in options if not already owned).
  • Warranty: Limited lifetime warranty on all lift kits for long-term assurance.

This kit is ideal for drivers seeking reliable off-road readiness, enhanced tire clearance, and a rugged appearance without sacrificing daily drivability. The combination of heavy-duty springs, long rear springs, and durable SX8000 shocks provides confident handling during loading, plowing, and highway cruising, while the included polyurethane bushings and teflon pads contribute to a smoother, quieter ride. With a proven track record from Tuff Country, you get a trusted upgrade that supports up to 33" tires and maintains stability across demanding terrains.


Year Range Make Model Drivetrain Fitment Note
1988-1991 Chevy Suburban K2500 4WD Will Not Fit Diesel Engine Models. Fits 3/4 Ton Models.
1988-1991 GMC Suburban K2500 4WD Will Not Fit Diesel Engine Models. Fits 3/4 Ton Models.

Specifications:


Single or Multi-Box Packaging: multi-box (4)
Weight: 233.0 lb
Length: 52
Width: 15
Height: 6


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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