Tuff Country 5.5in Rear Block & U-Bolt Kit – 1973–1987 Chevy/GMC 3/4 Ton Truck 4WD (97011)

Raise and level the rear of your Chevy or GMC 3/4-ton truck with the Tuff Country 5.5” Rear Block & U-Bolt Kit. This kit is designed to provide a larger rear lift while maintaining factory ride quality, making it a great option for trucks running taller front lifts or looking to achieve a more aggressive, leveled stance.

This system includes heavy-duty cast lift blocks that install between the rear leaf springs and axle, along with extended U-bolts designed specifically for proper fitment. The tapered block design helps reduce driveline vibration and maintain proper pinion angle after lifting.

Ideal for pairing with larger front lift kits, this setup improves both appearance and functionality while keeping your build simple and reliable.

Features:

• Provides 5.5” of rear lift for aggressive stance and leveling
• Designed for Chevy/GMC 3/4-ton 4WD truck applications
• Tapered block design helps reduce driveline vibration
• Heavy-duty cast lift blocks for strength and durability
• Includes extended U-bolts for secure installation
• Maintains factory-like ride quality
• Simple bolt-on installation
• Ideal for matching larger front lift setups
• Durable finish for corrosion resistance
• Made in the USA
• Backed by manufacturer limited lifetime warranty

Fitment:

• 1973–1987 Chevy Truck 3/4 Ton (4WD)
• 1973–1987 GMC Truck 3/4 Ton (4WD)

Notes:

• Rear lift only (front components not included)
• Professional installation recommended
• U-bolts should not be reused; always use supplied hardware
• Extended shocks are recommended for lifts over 2”
• Check driveline angles after installation