SUV, SUT Chevy, GMC Block & U-Bolt Kits

We offer a large selection of rear block and u-bolt kits for Chevy and GMC truck, SUV and SUT with rear leaf spring suspension. Rear lift block kits include a pair of rear blocks with u-bolts and hardware. They are a simple way to raise the rear of your vehicle if your leaf springs have started to sag. Unlike an add-a-leaf, rear lift blocks will not adversely affect your ride quality.

If you use your vehicle for hauling or towing, the addition of a block kit will maintain the factory rake of your vehicle. If you don't find the combination you're looking for, blocks and u-bolts are sold individually for a custom application.

All rear block kits listed are designed for the rear of your vehicle only. The leaf springs must be above the axle.

    For high quality, made-in-America products, choose a Superlift rear block kit. These kits include a pair of cast iron blocks along with u-bolts, locking nuts and washers.
    Vehicle Year Lift Price Item #    
    Blazer, Jimmy 4WD 1/2 Ton
    1969-72 1.5"
    $54.27
    3516 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1969-72 2"
    $54.27
    3527 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1969-72 2.5"
    $54.27
    3597 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1969-72 3"
    $71.70
    3538 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1969-72 4"
    $71.70
    3549 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1969-72 5"
    $76.82
    3559 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1973-91 1.5"
    $54.27
    3016 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1973-91 2"
    $54.27
    3027 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1973-91 2.5"
    $54.27
    3097 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1973-91 3"
    $71.70
    3038 SL More Info
    Blazer, Jimmy 4WD 1/2 Ton
    1973-91 5"
    $76.82
    3059 SL More Info
    Suburban 4WD 1/2 Ton
    1973-91 1.5"
    $54.27
    3016 SL More Info
    Suburban 4WD 1/2 Ton
    1973-91 2"
    $54.27
    3027 SL More Info
    Suburban 4WD 1/2 Ton
    1973-91 2.5"
    $54.27
    3097 SL More Info
    Suburban 4WD 1/2 Ton
    1973-91 3"
    $71.70
    3038 SL More Info
    Suburban 4WD 1/2 Ton
    1973-91 5"
    $76.82
    3059 SL More Info
    Suburban 4WD 1500
    1992-99 1.5"
    $54.27
    3216 SL More Info
    Suburban 4WD 1500
    1992-99 2"
    $54.27
    3225 SL More Info
    Suburban 4WD 1500
    1992-99 2.5"
    $54.27
    3297 SL More Info
    Suburban 4WD 1500
    1992-99 3"
    $71.70
    3238 SL More Info
    Suburban 4WD 1500
    1992-99 4"
    $71.70
    3249 SL More Info
    Suburban 4WD 1500
    1992-99 5"
    $76.82
    3259 SL More Info
    Suburban 4WD 2500
    1992-99 1.5"
    $54.27
    3416 SL More Info
    Suburban 4WD 2500
    1992-99 2"
    $54.27
    3425 SL More Info
    Suburban 4WD 2500
    1992-99 2.5"
    $54.27
    3497 SL More Info
    Suburban 4WD 2500
    1992-99 3"
    $71.70
    3438 SL More Info
    Suburban 4WD 2500
    1992-99 4"
    $71.70
    3449 SL More Info
    Suburban 4WD 2500
    1992-99 5"
    $76.82
    3459 SL More Info
    Suburban 4WD 2500
    2000-10 1.5"
    $54.27
    3816 SL More Info
    Suburban 4WD 2500
    2000-10 2"
    $71.70
    3825 SL More Info
    Suburban 4WD 2500
    2000-10 2.5"
    $71.70
    3897 SL More Info
    Suburban 4WD 2500
    2000-10 3"
    $76.82
    3838 SL More Info
    Suburban 4WD 2500
    2000-10 4"
    $76.82
    3849 SL More Info
    Suburban 4WD 2500
    2000-10 5"
    $76.82
    3859 SL More Info
    Suburban 4WD 3/4 Ton
    1973-91 1.5"
    $54.27
    3316 SL More Info
    Suburban 4WD 3/4 Ton
    1973-91 2"
    $54.27
    3327 SL More Info
    Suburban 4WD 3/4 Ton
    1973-91 2.5"
    $54.27
    3397 SL More Info
    Suburban 4WD 3/4 Ton
    1973-91 3"
    $71.70
    3338 SL More Info
    Suburban 4WD 3/4 Ton
    1973-91 4"
    $71.70
    3349 SL More Info
    Suburban 4WD 3/4 Ton
    1973-91 5"
    $76.82
    3359 SL More Info
    Tahoe, Yukon 4WD 1500
    1992-99 1.5"
    $54.27
    3216 SL More Info
    Tahoe, Yukon 4WD 1500
    1992-99 2"
    $54.27
    3225 SL More Info
    Tahoe, Yukon 4WD 1500
    1992-99 2.5"
    $54.27
    3297 SL More Info
    Tahoe, Yukon 4WD 1500
    1992-99 3"
    $71.70
    3238 SL More Info
    Tahoe, Yukon 4WD 1500
    1992-99 4"
    $71.70
    3249 SL More Info
    Tahoe, Yukon 4WD 1500
    1992-99 5"
    $76.82
    3259 SL More Info

    Rough Country rear block kits contain a pair of lifted blocks and 4 u-bolts with nuts and washers. These are the same blocks used with Rough Country lift kits.
    Vehicle Year Lift Price Item #    
    Blazer, Jimmy, Suburban 1500 2&4WD
    1973-91 3"
    $45.95
    6535 HK More Info
    Blazer, Jimmy, Suburban 1500 2&4WD
    1973-91 4.5"
    $72.63
    6511 HK More Info
    K5 Blazer, Jimmy, Suburban 2&4WD
    1973-91 2"
    $59.95
    6510 HK More Info
    K5 Blazer, Jimmy, Suburban 4WD
    1969-72 1.5"
    $45.95
    6531 HK More Info
    K5 Blazer, Jimmy, Suburban 4WD
    1969-72 2"
    $59.95
    6532 HK More Info
    K5 Blazer, Jimmy, Suburban 4WD
    1969-72 3"
    $45.95
    6533 HK More Info
    K5 Blazer, Jimmy, Suburban 4WD
    1969-72 4.5"
    $75.26
    6515 HK More Info
    Tahoe, Yukon, Suburban 1500 2&4WD
    1992-98 1.5"
    $46.95
    6528 HK More Info
    Tahoe, Yukon, Suburban 1500 2&4WD
    1992-98 2"
    $55.95
    6530 HK More Info
    Tahoe, Yukon, Suburban 1500 2&4WD
    1992-98 3"
    $45.95
    6564 HK More Info
    Tahoe, Yukon, Suburban 1500 2&4WD
    1992-98 4.5"
    $66.46
    6534 HK More Info

    Traxda block & u-bolt kits include laser cut, solid steel blocks that are made in the U.S. using OEM drawings. Traxda uses plated u-bolts and hardware and every part is powdered coated to make sure the finish lasts as long as your truck does. FREE SHIPPING on select items to Lower 48 states
    Vehicle Year Lift Price Item #    
    Avalanche 2500 2WD, 4WD
    2000-06 1"
    $95.25
    405036 TX More Info
    Denali 1500 AWD
    2002-06 1"
    $110.25 To see product price, add this item to your cart. You can always remove it later. What's this?
    404036 TX More Info
    Suburban 2500 2WD, 4WD
    2000-08 1"
    $95.25
    405036 TX More Info
    Yukon XL 2500 2&4WD
    2000-08 1"
    $95.25
    405036 TX More Info

    This unique Adjustable SuperBLOK kit made by ProRyde gives you the option to change the rear ride height from 1" to 1.5" to 2" without ever having to purchase any new components. The cast iron adjustable blocks have integrated center-pins with black e-coating for a durable finish and include in the kit are OEM grade u-bolts and hardware. SuperBLOK is a patent pending, interlocking system and should never be stacked or used with any other leaf spring blocks. FREE SHIPPING to Lower 48 states
    Vehicle Year Lift Price Item #    
    1996-16 Tahoe 1500 2&4WD Adjustable
    1996-16 1",1.5",2"
    $134.00
    PRD56-1100G More Info
    1996-16 Yukon, Yukon XL 1500 2&4WD Adjustable
    1996-16 1",1.5",2"
    $134.00
    PRD56-1100G More Info
    2000-16 Suburban 1500 2&4WD Adjustable
    2000-16 1",1.5",2"
    $134.00
    PRD56-1100G More Info
    2002-09 Trailblazer, Envoy 1500 2&4WD Adjustable
    2002-09 1",1.5",2"
    $134.00
    PRD56-1100G More Info
    2002-13 Avalanche 1500 2&4WD Adjustable
    2002-13 1",1.5",2"
    $134.00
    PRD56-1100G More Info
    2002-16 Escalade EXT, ESV 2WD, 4WD
    2002-16 1",1.5",2"
    $134.00
    PRD56-1100G More Info
    Avalanche 2500 2&4WD Adjustable
    2002-10 1", 1.5", 2"
    $134.00
    PRD52-1200G More Info

    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 #    
    Blazer, Jimmy, Tahoe, Yukon 4WD
    1969-72 2"
    $102.92
    BUK2080 SK More Info
    Blazer, Jimmy, Tahoe, Yukon 4WD
    1973-91 3.5"
    $115.37
    BUK3588 SK More Info
    Blazer, Jimmy, Tahoe, Yukon 4WD
    1973-91 4.5"
    $126.01
    BUK4589 SK More Info
    Blazer, Jimmy, Tahoe, Yukon 4WD
    1973-91 5.5"
    $129.95
    BUK5589 SK More Info
    Blazer, Jimmy, Tahoe, Yukon 4WD
    1992-99 1.25"
    $66.37
    BUK12563 SK More Info
    Blazer, Jimmy, Tahoe, Yukon 4WD
    1992-99 2"
    $105.06
    BUK2061 SK More Info
    Blazer, Jimmy, Tahoe, Yukon 4WD
    1992-99 4.5"
    $126.01
    BUK4564 SK More Info
    Suburban 6-Lug 4WD
    1973-91 3.5"
    $115.37
    BUK3588 SK More Info
    Suburban 6-Lug 4WD
    1973-91 4.5"
    $126.01
    BUK4589 SK More Info
    Suburban 6-Lug 4WD
    1973-91 5.5"
    $129.95
    BUK5589 SK More Info
    Suburban 6-Lug 4WD
    1992-99 1.25"
    $66.37
    BUK12563 SK More Info
    Suburban 6-Lug 4WD
    1992-99 2"
    $105.06
    BUK2061 SK More Info
    Suburban 6-Lug 4WD
    1992-99 4.5"
    $126.01
    BUK4564 SK More Info
    Suburban 8-Lug 4WD
    1973-87 2"
    $102.92
    BUK2091 SK More Info
    Suburban 8-Lug 4WD
    1973-87 3.5"
    $113.00
    BUK3592 SK More Info
    Suburban 8-Lug 4WD
    1973-87 4.5"
    $123.42
    BUK4592 SK More Info
    Suburban 8-Lug 4WD
    1973-87 5.5"
    $129.95
    BUK5592 SK More Info
    Suburban 8-Lug 4WD
    1992-99 1.25"
    $66.37
    BUK12563 SK More Info
    Suburban 8-Lug 4WD
    1992-99 2"
    $105.06
    BUK2063 SK More Info
    Suburban 8-Lug 4WD
    1992-99 4.5"
    $126.01
    BUK4564 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 #    
    Blazer, Suburban 1/2 or 3/4 ton 4WD
    1969-72 3"
    $86.26
    97000 TC More Info
    Blazer, Suburban 1/2 or 3/4 ton 4WD
    1969-72 4"
    $116.86
    97001 TC More Info
    Blazer, Suburban 1/2 or 3/4 ton 4WD
    1969-72 5.5"
    $162.03
    97002 TC More Info
    Blazer, Suburban 1/2 ton 4WD
    1973-91 1.5" flat
    $69.52
    97003 TC More Info
    Blazer, Suburban 1/2 ton 4WD
    1973-91 2" flat
    $72.17
    97004 TC More Info
    Blazer, Suburban 1/2 ton 4WD
    1973-91 3"
    $86.26
    97005 TC More Info
    Blazer, Suburban 1/2 ton 4WD
    1973-91 4"
    $116.86
    97006 TC More Info
    Blazer, Suburban 1/2 ton 4WD
    1973-91 5.5"
    $163.79
    97007 TC More Info
    Suburban 1500, 2500 4WD
    1992-98 1.5" flat
    $61.22
    97033 TC More Info
    Suburban 1500, 2500 4WD
    1992-98 2" flat
    $66.55
    97034 TC More Info
    Suburban 1500, 2500 4WD
    1992-98 3"
    $80.64
    97035 TC More Info
    Suburban 1500, 2500 4WD
    1992-98 4"
    $80.64
    97035 TC More Info
    Suburban 3/4 ton 4WD
    1973-91 2" flat
    $73.93
    97008 TC More Info
    Suburban 3/4 ton 4WD
    1973-91 3"
    $88.02
    97009 TC More Info
    Suburban 3/4 ton 4WD
    1973-91 4"
    $88.02
    97009 TC More Info
    Suburban 3/4 ton 4WD
    1973-91 5.5"
    $167.41
    97011 TC More Info
    Tahoe, Yukon 2 or 4 Door 4WD
    1994-98 1.5" flat
    $61.22
    97033 TC More Info
    Tahoe, Yukon 2 or 4 Door 4WD
    1994-98 2" flat
    $66.55
    97034 TC More Info
    Tahoe, Yukon 2 or 4 Door 4WD
    1994-98 3"
    $80.64
    97035 TC More Info
    Tahoe, Yukon 2 or 4 Door 4WD
    1994-98 4"
    $80.64
    97035 TC More Info

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