Upgrade rear suspension support and lift performance with the Skyjacker 1.25-Inch Rear Suspension Block and U-Bolt Kit, Part Number skyBUK12563. Designed for select truck and SUV applications, this kit uses a durable ductile iron suspension block with a fixed center pin to help maintain proper axle positioning. The tapered block design helps correct pinion angle and reduce the possibility of driveline vibration after installation.
The included Skyjacker U-bolts are e-coated to help resist corrosion and provide dependable service in demanding underbody environments. Their design supports secure axle-to-spring attachment when paired with compatible suspension components. The kit includes 1.25-inch lift blocks and U-bolts measuring approximately 9/16 inch by 2-1/8 inches by 10-1/2 inches, providing a practical solution for rear lift applications without requiring separate block and U-bolt sourcing.
Skyjacker suspension components are engineered for reliable fit and long-term use. This kit is listed for select 1996–1999 GMC K1500 Suburban applications; verify vehicle fitment, suspension configuration, and required hardware before installation. Professional installation is recommended to ensure correct torque, axle alignment, and driveline angles. Backed by a limited lifetime warranty, the Skyjacker skyBUK12563 kit provides a durable and purpose-built approach to rear suspension lifting.
Features: