Skyjacker BUK4564 4.5" Rear Lift Block and U-Bolt Kit

The Skyjacker BUK4564 is a complete 4.5-inch rear lift block and U-bolt kit designed to provide an affordable and effective suspension lift for select Dodge, Chevrolet, and GMC trucks. This kit is engineered to raise the rear of your vehicle, improving ground clearance and creating a level stance when combined with front lift components.

Key Features:

• 4.5-inch rear lift height for improved ground clearance
• Ductile iron blocks with fixed center pins for superior strength and durability
• Tapered block design corrects pinion angle and prevents driveline vibrations
• E-coated U-bolts provide excellent corrosion resistance
• Complete kit includes blocks and U-bolts for installation
• Backed by Skyjacker's limited lifetime warranty

Important Installation Notes:

• Requires wheels with 4-inch backspacing for proper fitment
• OEM factory wheels cannot be reused with this lift height
• Minor modifications may be required on Duramax diesel models
• For rear lift applications, this block kit can be used; alternatively, add-a-leaf springs (PN R3820) can be ordered for a different lift method

Skyjacker Suspension has been manufacturing quality suspension components since 1974, offering reliable lift solutions for trucks and SUVs. This lift block kit provides a cost-effective way to achieve the rear lift you need while maintaining proper suspension geometry.