# Skyjacker GM 2in Block & U-bolt Kit 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. - Ductile Iron With Fixed Center Pins - E-Coated For Corrosion Resistance - Limited Lifetime Warranty 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 ## Details - **Price:** 195.1 CAD - **Vendor:** Skyjacker - **Type:** Differential Mounts ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 195.10 CAD | In stock | ## Images - Photo - Primary --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/skyjacker-gm-2in-block-u-bolt-kit) > Updated: 2026-07-01