Straight Axle Pickup Chevy, GMC Block & U-Bolt Kits

The straight axle pickup with rear leaf springs will often need some rear spring lift after usage and time have taken their toll. We offer a wide array of rear block and u-bolt combinations for these Chevy and GMC models. Custom combinations of blocks and u-bolts are available separately if you don't find what you're looking for here.

    Skyjacker Rear Block Kits include a pair of cast iron blocks with 4 u-bolts, Nylon insert lock nuts and washers. Skyjacker blocks are high quality ductile iron (not gray iron) tapered and are 1-piece construction with axle pins built-in.
    Vehicle Year Lift Price Item #    
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1973-87 2"
    $105.06
    BUK2082 SK More Info
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1973-87 3.5"
    $115.37
    BUK3584 SK More Info
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1973-87 4.5"
    $126.01
    BUK4584 SK More Info
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    1973-91 2"
    $105.06
    BUK2082 SK More Info
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    1973-91 3.5"
    $115.37
    BUK3584 SK More Info
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    1992-98 2"
    $105.06
    BUK2082 SK More Info
    Pickup 1 Ton Crew Cab 4WD (except Dually)
    1992-98 3.5"
    $115.37
    BUK3584 SK More Info
    Pickup 1/2T, 3/4T 4WD
    1967-72 2"
    $102.92
    BUK2080 SK More Info
    Pickup 1/2T, 3/4T 4WD
    1973-87 3.5"
    $115.37
    BUK3588 SK More Info
    Pickup 1/2T, 3/4T 4WD
    1973-87 4.5"
    $126.01
    BUK4589 SK More Info
    Pickup 1/2T, 3/4T 4WD
    1973-87 5.5"
    $129.95
    BUK5589 SK More Info
    Pickup 3/4 Ton 8-Lug 4WD
    1973-87 5.5"
    $129.95
    BUK5592 SK More Info

    Tuff Country cast iron rear block kits are sold in pairs and include u-bolts with hardware. They are designed for vehicles with leaf springs above the rear axle.
    Vehicle Year Lift Price Item #    
    Pickup 1/2 or 3/4 ton 4WD
    1969-72 4"
    $116.86
    97001 TC More Info
    Pickup 1/2 or 3/4 ton 4WD
    1969-72 5.5"
    $162.03
    97002 TC More Info
    Pickup 1/2 ton 4WD
    1973-87 4"
    $116.86
    97006 TC More Info
    Pickup 1/2 ton 4WD
    1973-87 5.5"
    $163.79
    97007 TC More Info
    Pickup 3/4 ton 4WD
    1973-87 4"
    $118.62
    97010 TC More Info
    Pickup 3/4 ton 4WD
    1973-87 5.5"
    $167.41
    97011 TC More Info

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