Tuff Country 97036 Block & Ubolt Kit - 4" (H) x 2 1/2" (W) x 4 3/4" (L) Tapered

Lift the rear of your GM SUV or pickup with the Tuff Country 97036 Block & U-Bolt Kit. This 4" rear lift kit is crafted for GMC Suburban, Chevy Tahoe, and other GM 4WD trucks from the late 1980s through the 1990s, delivering a clean, bolt-on height increase while preserving a comfortable, factory-like ride.

• Lift Height: 4" rear lift blocks that raise the vehicle's stance while maintaining a controlled, road-ready feel.
• Block Design: Tapered lift blocks—built for durability and reduced driveline vibration—available in heavy-duty cast iron (with some kits using aluminum blocks depending on batch).
• U-bolts & Hardware: Extended zinc-plated rear u-bolts with nuts and washers included for a secure, corrosion-resistant install.
• Material Options: Block material may vary by kit (cast iron or aluminum); both are designed to handle load and torque under use.
• Compatibility: Specifically engineered for GM rear suspensions and 4WD models, including 1988–1998 Chevy Truck K1500/2500/3500, 1988–1998 GMC Truck K1500/2500/3500, 1992–1998 Chevy Suburban 4WD, and 1994–1998 GMC Yukon 4WD.
• Installation: Simple bolt-on installation—no cutting or welding required. Designed for rear axles only; do not use lift blocks on the front axle.
• Shocks Note: In most applications, factory-length shocks must be replaced with extended-length shocks when using rear blocks 2" or taller. Plan for shock compatibility during upgrade.
• Finish: Zinc-plated hardware provides corrosion resistance for long-term performance in varied driving conditions.

This kit is designed to deliver a reliable 4" rear lift without compromising ride quality. The tapered blocks reduce driveline vibrations, while the heavy-duty U-bolts and hardware deliver solid, repeatable performance under load. It’s a practical upgrade for those aiming to fit larger tires, improve stance for towing, or simply achieve a more commanding presence on a GM 4WD rig. Trust in Tuff Country’s engineering to provide a straightforward, durable bolt-on solution for your 4WD GM truck or SUV.