Tuff Country P/N 97006 block kit includes lift blocks and u-bolts designed to raise the rear of your GM Truck/SUV. Installation is done by inserting the cast lift blocks between the factory rear leaf springs and axle. Extended zinc plated rear u-bolts designed specifically for the GM Truck/SUV are use to replace the factory u-bolts.
Details:

• Rear Block and U-Bolt Kit
• Lifts the rear of your vehicle 4 inches
• Maintains a factory ride
• Custom made for the application
• Lift blocks are constructed of heavy duty cast iron
• Blocks are tapered to eliminate or reduce driveline vibration
• Zinc plated corrosion resistant extended u-bolts
• Simple Bolt-on Installation
• Made In The USA
• Sold As A Kit

Fits:

• 1973-1987 Chevrolet Truck 1/2 Ton 4WD
• 1973-1991 Chevrolet Suburban 1/2 Ton 4WD
• 1973-1991 Chevrolet Blazer 1/2 Ton 4WD
• 1973-1987 GMC Truck 1/2 Ton 4WD
• 1973-1991 GMC Suburban 1/2 Ton 4WD
• 1973-1991 GMC Jimmy 1/2 Ton 4WD

Installation Notes:

• On most applications factory length shocks must be replaced with extended length shocks when installing rear blocks 2 inches in height or taller
• Designed for rear axles only. Never use lift blocks with a front axle

Tech Specs:

• Amount of Lift: 4 Inches Rear Lift
• Blocks Tapered: Yes
• Lift Block Dimensions: 4 Inch H x 2.5 Inch W x 4.75 Inch L
• U-Bolt Dimensions: 5/8 Inch x 3 Inch x 11.75 Inch - Round
• Includes: 2) 4 Inch Cast Iron Lift Blocks, 4) Rear Axle U-bolts, 1) Hardware Bag (nuts and washers)