Skyjacker(R) utilizes Blocks and U-Bolts in its Kits to provide rear lift. The Skyjacker(R) 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(R) 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, and 5 inches.

This Part Fits:

Year	Make	Model	Submodel
1975-1978	GMC	C15	Base
1977-1978	GMC	C15	Heavy Half
1975-1978	GMC	C15	High Sierra
1977	GMC	C15	Indy Hauler
1975-1978	GMC	C15	Sierra Classic
1975-1978	GMC	C15	Sierra Grande
1978	GMC	C15	Street Coupe
1973-1974	GMC	C15/C1500 Pickup	Base
1979-1986	GMC	C1500	Base
1979-1980	GMC	C1500	Heavy Half
1979-1986	GMC	C1500	High Sierra
1979-1986	GMC	C1500	Sierra Classic
1979-1982	GMC	C1500	Sierra Grande
1979-1982	GMC	C1500	Street Coupe
1975-1978	GMC	K15	Base
1975-1978	GMC	K15	High Sierra
1977	GMC	K15	Indy Hauler
1975-1978	GMC	K15	Sierra Classic
1975-1978	GMC	K15	Sierra Grande
1973-1974	GMC	K15/K1500 Pickup	Base
1979-1986	GMC	K1500	Base
1979-1986	GMC	K1500	High Sierra
1979-1986	GMC	K1500	Sierra Classic
1979-1982	GMC	K1500	Sierra Grande
1987	GMC	R1500	Base
1987	GMC	R1500	High Sierra
1987	GMC	R1500	Sierra Classic
1987	GMC	V1500	Base
1987	GMC	V1500	High Sierra
1987	GMC	V1500	Sierra Classic