Skyjacker Block and U-Bolt Kit - 4.5 in. Lift Brake Systems 25% thicker walls than a

25% thicker walls than a major competitive brand

2010-2014 GMC Yukon XL 1500

080" Wall Pushrod

(CALIBRATED FOR FUEL ECONOMY) Designed for small-block and small displacement big-block engines

1980-1988 Mercury Cougar

Skyjacker Block and U-Bolt Kit - 4.5 in. Lift Brake Systems 25% thicker walls than aSkyjacker utilizes Blocks and U Bolts in its Kits to provide rear lift. The Skyjacker U Bolts are e coated for corrosion resistance. These U Bolts are offered in various shapes and sizes such as square, round, and semi round in lengths ranging from 1. 75 19 inches. The Blocks used in Skyjacker Kits are Ductile iron with fixed center pins. They are also tapered to correct pinion angle and prevent driveline vibrations. Available in 1. 25, 2, 3. 5, 4. 5,