IFS Pickup Chevy, GMC Block & U-Bolt Kits

To compensate for loss of rear leaf spring height, a new rear block and u-bolt kit is sometimes all you need. This option doesn't affect ride quality and can get your Chevy or GMC truck back to either its original or more level stance. Contact us to learn more about these GMC truck leaf spring lift kits.

    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 #    
    Pickup 4WD 1500
    1988-98 1.5"
    $54.27
    3216 SL More Info
    Pickup 4WD 1500
    1988-98 2"
    $54.27
    3225 SL More Info
    Pickup 4WD 1500
    1988-98 2.5"
    $54.27
    3297 SL More Info
    Pickup 4WD 1500
    1988-98 3"
    $71.70
    3238 SL More Info
    Pickup 4WD 1500
    1988-98 4"
    $71.70
    3249 SL More Info
    Pickup 4WD 1500
    1988-98 5"
    $76.82
    3259 SL More Info
    Pickup 4WD 2500, 2500HD
    1988-98 1.5"
    $54.27
    3416 SL More Info
    Pickup 4WD 2500, 2500HD
    1988-98 2"
    $54.27
    3425 SL More Info
    Pickup 4WD 2500, 2500HD
    1988-98 2.5"
    $54.27
    3497 SL More Info
    Pickup 4WD 2500, 2500HD
    1988-98 3"
    $71.70
    3438 SL More Info
    Pickup 4WD 2500, 2500HD
    1988-98 4"
    $71.70
    3449 SL More Info
    Pickup 4WD 2500, 2500HD
    1988-98 5"
    $76.82
    3459 SL More Info
    Pickup 4WD 3500 (except Dually)
    1988-98 1.5"
    $54.27
    3416 SL More Info
    Pickup 4WD 3500 (except Dually)
    1988-98 2"
    $54.27
    3425 SL More Info
    Pickup 4WD 3500 (except Dually)
    1988-98 2.5"
    $54.27
    3497 SL More Info
    Pickup 4WD 3500 (except Dually)
    1988-98 3"
    $71.70
    3438 SL More Info
    Pickup 4WD 3500 (except Dually)
    1988-98 4"
    $71.70
    3449 SL More Info
    Pickup 4WD 3500 (except Dually)
    1988-98 5"
    $76.82
    3459 SL More Info
    Silverado, Sierra 4WD 1500
    1999-06 1.5"
    $54.27
    3816 SL More Info
    Silverado, Sierra 4WD 1500
    1999-06 2"
    $71.70
    3825 SL More Info
    Silverado, Sierra 4WD 1500
    1999-06 2.5"
    $71.70
    3897 SL More Info
    Silverado, Sierra 4WD 1500
    1999-06 3"
    $76.82
    3838 SL More Info
    Silverado, Sierra 4WD 1500
    1999-06 4"
    $76.82
    3849 SL More Info
    Silverado, Sierra 4WD 1500
    1999-06 5"
    $76.82
    3859 SL More Info
    Silverado, Sierra 4WD 1500
    2007-13 1.5"
    $71.70
    3916 SL More Info
    Silverado, Sierra 4WD 1500
    2007-13 2"
    $71.70
    3925 SL More Info
    Silverado, Sierra 4WD 2500, 2500HD
    1999-10 1.5"
    $54.27
    3816 SL More Info
    Silverado, Sierra 4WD 2500, 2500HD
    1999-10 2"
    $71.70
    3825 SL More Info
    Silverado, Sierra 4WD 2500, 2500HD
    1999-10 2.5"
    $71.70
    3897 SL More Info
    Silverado, Sierra 4WD 2500, 2500HD
    1999-10 3"
    $76.82
    3838 SL More Info
    Silverado, Sierra 4WD 2500, 2500HD
    1999-10 4"
    $76.82
    3849 SL More Info
    Silverado, Sierra 4WD 2500, 2500HD
    1999-10 5"
    $76.82
    3859 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 #    
    1500 Pickup 2&4WD (includes 99 Old Body)
    1988-98 2"
    $55.95
    6530 HK More Info
    Silverado, Sierra 1500 2&4WD
    1999-13 2"
    $53.95
    6579 HK More Info
    Silverado, Sierra 1500 2&4WD
    1999-15 3"
    $45.95
    6564 HK More Info
    Silverado, Sierra 1500 2&4WD
    1999-15 4.5"
    $66.46
    6534 HK More Info
    Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
    1988-98 1.5"
    $46.95
    6528 HK More Info
    Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
    1988-98 3"
    $45.95
    6564 HK More Info
    Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
    1988-98 4.5"
    $66.46
    6534 HK More Info
    Silverado, Sierra 1500 2&4WD
    1999-13 1.5"
    $46.95
    6528 HK More Info
    Silverado, Sierra 1500HD, 2500HD, 3500 4WD (except Dually
    2002-10 3"
    $55.95
    6567 HK More Info
    Silverado, Sierra 1500HD, 2500HD, 3500 4WD (except Dually
    2002-10 4.5"
    $45.95
    6568 HK More Info

    Vehicle Year Lift Price Item #    
    Silverado, Sierra 2500HD, 3500HD with factory overloads 4WD
    2011-15 2"
    $78.98
    ZONC1208 More Info
    Silverado, Sierra 2500HD, 3500HD without factory overloads 4WD
    2011-15 2"
    $78.98
    ZONC1207 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 #    
    Silverado, Sierra 1500 2WD (Includes 2007 Classic)
    1999-06 1"
    $110.25 To see product price, add this item to your cart. You can always remove it later. What's this?
    404086 TX More Info
    Silverado, Sierra 1500 4WD (Includes 2007 Classic)
    1999-06 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
    Silverado, Sierra 1500 4WD replaces factory block
    2007-17 1"
    $110.25 To see product price, add this item to your cart. You can always remove it later. What's this?
    406036 TX More Info
    Silverado, Sierra 2500HD 2WD, 4WD
    2011-17 1"
    $147.75 To see product price, add this item to your cart. You can always remove it later. What's this?
    405046 TX More Info
    Silverado, Sierra 3500HD
    2011-16 1"
    $147.75 To see product price, add this item to your cart. You can always remove it later. What's this?
    405048 TX More Info
    Silverado, Sierra All 8-Lug 2WD, 4WD
    2000-10 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 #    
    Chevy, GMC Pickup 1500 4WD Adjustable
    1988-98 1", 1.5", 2"
    $134.00
    PRD52-1200G More Info
    Silverado, Sierra 1500 2&4WD Adjustable
    1999-06 1", 1.5", 2"
    $169.00
    PRD52-1000G More Info
    Silverado, Sierra 1500 2&4WD Adjustable
    2007-17 1.75", 2.25", 2.75"
    $169.00
    PRD52-1000G More Info
    Silverado, Sierra 8-Lug 2&4WD Adjustable
    2011-16 1", 1.5", 2"
    $169.00
    PRD52-1400G 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 #    
    Colorado, Canyon 2&4WD
    2004-13 1.25"
    $66.37
    BUK12571 SK More Info
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1988-98 2"
    $105.06
    BUK2082 SK More Info
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1988-98 3.5"
    $115.37
    BUK3584 SK More Info
    Pickup 1 Ton 4WD (except Crew Cab, Dually)
    1988-98 4.5"
    $126.01
    BUK4584 SK More Info
    Pickup 3/4 Ton 8-Lug 4WD
    1988-98 2"
    $105.06
    BUK2061 SK More Info
    Pickup 3/4 Ton 8-Lug 4WD
    1988-98 4.5"
    $126.01
    BUK4564 SK More Info
    Pickup 6-Lug 4WD
    1988-98 1.25"
    $66.37
    BUK12563 SK More Info
    Pickup 6-Lug 4WD
    1988-98 2"
    $105.06
    BUK2061 SK More Info
    Pickup 6-Lug 4WD
    1988-98 4.5"
    $126.01
    BUK4564 SK More Info
    Silverado, Sierra 2500, 2500HD 4WD
    2000-07 2" flat
    $105.06
    BUK2082F SK More Info
    Silverado, Sierra 2500, 2500HD 4WD
    2000-10 1.25"
    $66.37
    BUK12581 SK More Info
    Silverado, Sierra 2500, 2500HD 4WD
    2000-10 2"
    $105.06
    BUK2082 SK More Info
    Silverado, Sierra 2500, 2500HD 4WD
    2000-10 3.5"
    $115.37
    BUK3584 SK More Info
    Silverado, Sierra 2500, 2500HD 4WD
    2000-10 4.5"
    $126.01
    BUK4584 SK More Info
    Silverado, Sierra 2500HD 4WD
    2011-17 2"
    $105.06
    BUK2789 SK More Info
    Silverado, Sierra 6-Lug 2WD
    1999-06 1.25"
    $66.37
    BUK12562 SK More Info
    Silverado, Sierra 6-Lug 4WD
    1999-06 1.25"
    $66.37
    BUK12563 SK More Info
    Silverado, Sierra 6-Lug 4WD
    1999-06 2"
    $105.06
    BUK2063 SK More Info
    Silverado, Sierra 6-Lug 4WD
    1999-06 3.5"
    $115.37
    BUK3564 SK More Info
    Silverado, Sierra 6-Lug 4WD
    1999-06 4.5"
    $126.01
    BUK4565 SK More Info
    Silverado, Sierra 6-Lug 4WD
    2007-17 1.25"
    $66.37
    BUK12563 SK More Info
    Silverado, Sierra 6-Lug 4WD
    2007-17 2"
    $105.06
    BUK2063 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 1500, 2500 & 3500 4WD
    1988-98 1.5" flat
    $61.22
    97033 TC More Info
    Pickup 1500, 2500 & 3500 4WD
    1988-98 2" flat
    $66.55
    97034 TC More Info
    Pickup 1500, 2500 & 3500 4WD
    1988-98 3"
    $80.64
    97035 TC More Info
    Pickup 1500, 2500 & 3500 4WD
    1988-98 4"
    $107.63
    97036 TC More Info
    Pickup 1500, 2500 & 3500 4WD
    1988-98 5.5"
    $151.93
    97037 TC More Info
    Silverado, Sierra 1500 4WD
    1999-05 3"
    $80.64
    97029 TC More Info
    Silverado, Sierra 1500 4WD
    1999-05 4"
    $111.24
    97030 TC More Info
    Silverado, Sierra 1500 4WD
    2006-17 3" flat
    $120.58
    97031 TC More Info
    Silverado, Sierra 1500 4WD
    2006-17 4" flat
    $151.53
    97032 TC More Info
    Silverado, Sierra 2500 HD 4WD
    2001-10 1" flat
    $75.03
    97021 TC More Info
    Silverado, Sierra 2500 HD 4WD
    2001-10 2" flat
    $99.25
    97022 TC More Info
    Silverado, Sierra 2500 HD 4WD
    2001-10 3" flat
    $127.07
    97023 TC More Info
    Silverado, Sierra 2500 HD 4WD
    2001-10 4" flat
    $158.03
    97024 TC More Info
    Silverado, Sierra 2500HD 4WD
    2011-17 1" flat
    $111.18
    97090 TC More Info
    Silverado, Sierra 3500 HD 4WD
    2001-10 1" flat
    $76.88
    97025 TC More Info
    Silverado, Sierra 3500 HD 4WD
    2001-10 2" flat
    $101.09
    97026 TC More Info
    Silverado, Sierra 3500 HD 4WD
    2001-10 3" flat
    $128.75
    97027 TC More Info
    Silverado, Sierra 3500 HD 4WD
    2001-10 4" flat
    $159.70
    97028 TC More Info
    Silverado, Sierra 3500HD 4WD
    2011-17 1" flat
    $111.18
    97091 TC More Info

    ReadyLift rear block kits are vehicle specific. Some are constructed of Billet aluminim and some are cast iron. Each block kit includes a pair of blocks with E-coated ubolts, nuts and washers. FREE SHIPPING on select items to lower 48 States
    Vehicle Year Lift Price Item #    
    Chevy, GMC Pickup 6-Lug 2&4WD
    1988-98 1"
    $149.95
    66-3051 RL More Info
    Chevy, GMC Pickup 6-Lug 2&4WD
    1988-98 2"
    $159.95
    66-3052 RL More Info
    Silverado, Sierra 1500 2&4WD (Except 2007 Classic. Replaces factory block)
    2007-17 1"
    $149.95
    66-3002 RL More Info
    Silverado, Sierra 1500 2&4WD (Except 2007 Classic. Replaces factory block)
    2007-17 1.75"
    $159.95
    66-3003 RL More Info
    Silverado, Sierra 1500 2&4WD (Includes 2007 Classic. Replaces factory block)
    1999-06 1"
    $159.95
    66-3003 RL More Info
    Silverado, Sierra 1500 2&4WD (Includes 2007 Classic.)
    1999-06 2.25"
    $149.95
    66-3002 RL More Info
    Silverado, Sierra 1500 2WD (vehicles without OEM block. Includes 2007 Classic)
    1999-06 3"
    $159.95
    66-3003 RL More Info
    Silverado, Sierra 2500HD 2&4WD (except vehicles with factory top overload or Camper pkg)
    2011-17 1"
    $149.95
    66-3111 RL More Info
    Silverado, Sierra 2500HD 2&4WD (except vehicles with factory top overload or Camper pkg)
    2011-17 2"
    $149.95
    66-3112 RL More Info
    Silverado, Sierra 2500HD 2&4WD (with factory trailer package & overloads)
    2011-17 1"
    $169.95
    66-3121 RL More Info
    Silverado, Sierra 2500HD 2&4WD (with factory trailer package & overloads)
    2011-17 1"
    $169.95
    66-3121 RL More Info
    Silverado, Sierra 2500HD 2&4WD (with factory trailer package & overloads)
    2011-17 2"
    $169.95
    66-3122 RL More Info
    Silverado, Sierra 2500HD, 3500HD 2&4WD
    2000-10 1"
    $149.95
    66-3051 RL More Info
    Silverado, Sierra 2500HD, 3500HD 2&4WD
    2000-10 2"
    $159.95
    66-3052 RL More Info
    Silverado, Sierra 2500HD, 3500HD 2&4WD
    2011-17 4"
    $166.96
    26-3204 RL More Info
    Silverado, Sierra 2500HD, 3500HD 2&4WD
    2011-17 5"
    $166.96
    26-3205 RL More Info
    Silverado, Sierra 3500HD 2&4WD (with factory trailer package & overloads)
    2011-17 2"
    $169.95
    66-3122 RL More Info

    Please wait...