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.

Superlift

The Superlift rear block kits include a pair of cast iron blocks along with u-bolts, locking nuts and washers.
Vehicle Year Lift Price Item #  
Pickup 4WD 1500
1.5" rear block kit
Pickup 4WD 1500
1988-98 1.5"
$89.99
3216-SL
Pickup 4WD 1500
2" rear block kit
Pickup 4WD 1500
1988-98 2"
$89.99
3225-SL
Pickup 4WD 1500
2.5" rear block kit
Pickup 4WD 1500
1988-98 2.5"
$89.99
3297-SL
Pickup 4WD 1500
3" rear block kit
Pickup 4WD 1500
1988-98 3"
$119.99
3238-SL
Pickup 4WD 1500
4" rear block kit
Pickup 4WD 1500
1988-98 4"
$119.99
3249-SL
Pickup 4WD 1500
5" rear block kit
Pickup 4WD 1500
1988-98 5"
$119.99
3259-SL
Pickup 4WD 2500, 2500HD
1.5" rear block kit
Pickup 4WD 2500, 2500HD
1988-98 1.5"
$89.99
3416-SL
Pickup 4WD 2500, 2500HD
2" rear block kit
Pickup 4WD 2500, 2500HD
1988-98 2"
$89.99
3425-SL
Pickup 4WD 2500, 2500HD
2.5" rear block kit
Pickup 4WD 2500, 2500HD
1988-98 2.5"
$89.99
3497-SL
Pickup 4WD 2500, 2500HD
4" rear block kit
Pickup 4WD 2500, 2500HD
1988-98 4"
$119.99
3449-SL
Pickup 4WD 2500, 2500HD
5" rear block kit
Pickup 4WD 2500, 2500HD
1988-98 5"
$119.99
3459-SL
Pickup 4WD 3500 (except Dually)
1.5" rear block kit
Pickup 4WD 3500 (except Dually)
1988-98 1.5"
$89.99
3416-SL
Pickup 4WD 3500 (except Dually)
2" rear block kit
Pickup 4WD 3500 (except Dually)
1988-98 2"
$89.99
3425-SL
Pickup 4WD 3500 (except Dually)
2.5" rear block kit
Pickup 4WD 3500 (except Dually)
1988-98 2.5"
$89.99
3497-SL
Pickup 4WD 3500 (except Dually)
4" rear block kit
Pickup 4WD 3500 (except Dually)
1988-98 4"
$119.99
3449-SL
Pickup 4WD 3500 (except Dually)
5" rear block kit
Pickup 4WD 3500 (except Dually)
1988-98 5"
$119.99
3459-SL
Silverado, Sierra 4WD 1500
1.5" rear block kit
Silverado, Sierra 4WD 1500
1999-06 1.5"
$89.99
3816-SL
Silverado, Sierra 4WD 1500
2" rear block kit
Silverado, Sierra 4WD 1500
1999-06 2"
$119.99
3825-SL
Silverado, Sierra 4WD 1500
2.5" rear block kit
Silverado, Sierra 4WD 1500
1999-06 2.5"
$119.99
3897-SL
Silverado, Sierra 4WD 1500
3" rear block kit
Silverado, Sierra 4WD 1500
1999-06 3"
$119.99
3838-SL
Silverado, Sierra 4WD 1500
4" rear block kit
Silverado, Sierra 4WD 1500
1999-06 4"
$119.99
3849-SL
Silverado, Sierra 4WD 1500
5" rear block kit
Silverado, Sierra 4WD 1500
1999-06 5"
$119.99
3859-SL
Silverado, Sierra 4WD 1500
1.5" rear block kit
Silverado, Sierra 4WD 1500
2007-18 1.5"
$119.99
3916-SL
Silverado, Sierra 4WD 1500
2" rear block kit
Silverado, Sierra 4WD 1500
2007-18 2"
$119.99
3925-SL
Silverado, Sierra 4WD 2500, 2500HD
1.5" rear block kit
Silverado, Sierra 4WD 2500, 2500HD
1999-10 1.5"
$89.99
3816-SL
Silverado, Sierra 4WD 2500, 2500HD
2" rear block kit
Silverado, Sierra 4WD 2500, 2500HD
1999-10 2"
$119.99
3825-SL
Silverado, Sierra 4WD 2500, 2500HD
2.5" rear block kit
Silverado, Sierra 4WD 2500, 2500HD
1999-10 2.5"
$119.99
3897-SL
Silverado, Sierra 4WD 2500, 2500HD
3" rear block kit
Silverado, Sierra 4WD 2500, 2500HD
1999-10 3"
$119.99
3838-SL
Silverado, Sierra 4WD 2500, 2500HD
4" rear block kit
Silverado, Sierra 4WD 2500, 2500HD
1999-10 4"
$119.99
3849-SL
Silverado, Sierra 4WD 2500, 2500HD
5" rear block kit
Silverado, Sierra 4WD 2500, 2500HD
1999-10 5"
$119.99
3859-SL

Rough Country

Rough Country rear block kits contain a pair of lifted blocks and 4 u-bolts with nuts and washers.
Vehicle Year Lift Price Item #  
1500 Pickup 2&4WD (includes 99 Old Body)
2" Rear block kit
1500 Pickup 2&4WD (includes 99 Old Body)
1988-98 2"
$120.95
6530-HK
Silverado, Sierra 1500 2&4WD
2" Rear block kit
Silverado, Sierra 1500 2&4WD
1999-13 2"
$130.95
6579-HK
Silverado, Sierra 1500 2&4WD
3" Rear block kit
Silverado, Sierra 1500 2&4WD
1999-15 3"
$134.95
6564-HK
Silverado, Sierra 1500 2&4WD
4.5" Rear block kit
Silverado, Sierra 1500 2&4WD
1999-15 4.5"
$144.95
6534-HK
Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
1.5" Rear block kit
Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
1988-98 1.5"
$124.95
6528-HK
Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
3" Rear block kit
Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
1988-98 3"
$134.95
6564-HK
Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
4.5" Rear block kit
Silverado, Sierra 1500 2&4WD (includes 99 Old Body)
1988-98 4.5"
$144.95
6534-HK
Silverado, Sierra 1500 2&4WD
1.5" Rear block kit
Silverado, Sierra 1500 2&4WD
1999-18 1.5"
$124.95
6528-HK
Silverado, Sierra 1500HD, 2500HD, 3500 4WD (except Dually
3" Rear block kit
Silverado, Sierra 1500HD, 2500HD, 3500 4WD (except Dually
2002-10 3"
$134.95
6567-HK
Silverado, Sierra 1500HD, 2500HD, 3500 4WD (except Dually
4.5" Rear block kit
Silverado, Sierra 1500HD, 2500HD, 3500 4WD (except Dually
2002-10 4.5"
$144.95
6568-HK

Zone Offroad

Vehicle Year Lift Price Item #  
Silverado, Sierra 2500HD, 3500HD with factory overloads 4WD
2011-18 4WD Chevy Silverado, GMC Sierra 2500HD, 3500HD with factory overloads 2" rear block kit
Silverado, Sierra 2500HD, 3500HD with factory overloads 4WD
2011-18 2"
$80.55
ZONC1208
Silverado, Sierra 2500HD, 3500HD without factory overloads 4WD
2011-20 4WD Chevy Silverado, GMC Sierra 2500HD, 3500HD without factory overloads 2" rear block kit
Silverado, Sierra 2500HD, 3500HD without factory overloads 4WD
2011-20 2"
$80.55
ZONC1207

Traxda

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 #  
Colorado 4WD
2015-19 Chevy Colorado Z71 2" rear block kit
Colorado 4WD
2015-19 2"
$116.03
4318-TX
Silverado, Sierra 1500 2WD (Includes 2007 Classic)
1999-06 2WD Chevy Silverado, GMC Sierra 1500 1" rear block kit (replaces factory block)
Silverado, Sierra 1500 2WD (Includes 2007 Classic)
1999-06 1"
$99.17
404086-TX
Silverado, Sierra 1500 4WD (Includes 2007 Classic)
4WD Chevy Silverado, GMC Sierra, Denali 1500 1" rear block kit (replaces factory block)
Silverado, Sierra 1500 4WD (Includes 2007 Classic)
1999-06 1"
$116.41
404036-TX
Silverado, Sierra 1500 4WD replaces factory block
2007-19 4WD Chevy, Silverado, GMC Sierra 1500 1" rear block kit (replaces factory block)
Silverado, Sierra 1500 4WD replaces factory block
2007-19 1"
$111.20
406036-TX
Silverado, Sierra 2500HD 2WD, 4WD
2011-19 2&4WD Chevy Silverado, GMC Sierra 2500HD 1" rear block kit
Silverado, Sierra 2500HD 2WD, 4WD
2011-19 1"
$191.96
405046-TX
Silverado, Sierra 3500HD
2011-16 Chevy Silverado, GMC Sierrra 3500HD 1" rear block kit
Silverado, Sierra 3500HD
2011-16 1"
$191.96
405048-TX
Silverado, Sierra All 8-Lug 2WD, 4WD
2&4WD Silverado, Sierra, Suburban, Avalanche, Yukon XL 8-Lug 1" rear block kit
Silverado, Sierra All 8-Lug 2WD, 4WD
2000-10 1"
$143.24
405036-TX

ProRyde

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.  FREE SHIPPING to Lower 48 states
Vehicle Year Lift Price Item #  
Chevy, GMC Pickup 6-Lug 4WD Adjustable
Chevy, GMC Pickup, Avalanche, Yukon XL, Suburban, Hummer 1"-2" adjustable rear block kit
Chevy, GMC Pickup 6-Lug 4WD Adjustable
1988-98 1",1.5",2"
$134.00
PRD52-1200G
Colorado, Canyon 2&4WD Adjustable
2015-Newer 2&4WD Chevy Colorado, GMC 1"-2" adjustable rear block kit
Colorado, Canyon 2&4WD Adjustable
2015-Newer 1", 1.5", 2"
$134.00
PRD52-1150G
Silverado, Sierra 1500 2&4WD Adjustable
1999-06 2&4WD Chevy Silverado, GMC Sierrra 1500 1"-2" adjustable rear block kit
Silverado, Sierra 1500 2&4WD Adjustable
1999-06 1", 1.5", 2"
$169.00
PRD52-1000G
Silverado, Sierra 8-Lug 2&4WD Adjustable
2011-Newer 2&4WD Chevy Silverado, GMC Sierra 2500, 3500 1"-2" adjustable tapered rear block kit
Silverado, Sierra 8-Lug 2&4WD Adjustable
2011-Newer 1", 1.5", 2"
$169.00
PRD52-1400G
Silverado, Sierra 8-Lug 4WD Adjustable
Chevy, GMC Pickup, Avalanche, Yukon XL, Suburban, Hummer 1"-2" adjustable rear block kit
Silverado, Sierra 8-Lug 4WD Adjustable
1999-10 1",1.5",2"
$134.00
PRD52-1200G

Skyjacker

Skyjacker Rear Block Kits include a pair of cast iron blocks with 4 u-bolts, Nylon insert lock nuts and washers.
Vehicle Year Lift Price Item #  
Colorado, Canyon 2&4WD
Block & U-bolt Kit
Colorado, Canyon 2&4WD
2004-13 1.25"
$72.78
BUK12571-SK
Pickup 1 Ton 4WD (except Crew Cab, Dually)
Block & U-bolt Kit
Pickup 1 Ton 4WD (except Crew Cab, Dually)
1988-98 2"
$115.20
BUK2082-SK
Pickup 1 Ton 4WD (except Crew Cab, Dually)
Block & U-bolt Kit
Pickup 1 Ton 4WD (except Crew Cab, Dually)
1988-98 3.5"
$126.50
BUK3584-SK
Pickup 1 Ton 4WD (except Crew Cab, Dually)
Block & U-bolt Kit
Pickup 1 Ton 4WD (except Crew Cab, Dually)
1988-98 4.5"
$138.16
BUK4584-SK
Pickup 1500, 2500 6-Lug 4WD
Block & U-bolt Kit
Pickup 1500, 2500 6-Lug 4WD
1988-98 1.25"
$72.78
BUK12563-SK
Pickup 1500, 2500 6-Lug 4WD
Block & U-bolt Kit
Pickup 1500, 2500 6-Lug 4WD
1988-98 2"
$115.20
BUK2061-SK
Pickup 1500, 2500 6-Lug 4WD
Block & U-bolt Kit
Pickup 1500, 2500 6-Lug 4WD
1988-98 4.5"
$138.16
BUK4564-SK
Pickup 2500 8-Lug 4WD
Block & U-bolt Kit
Pickup 2500 8-Lug 4WD
1988-98 2"
$115.20
BUK2061-SK
Pickup 2500 8-Lug 4WD
Block & U-bolt Kit
Pickup 2500 8-Lug 4WD
1988-98 4.5"
$138.16
BUK4564-SK
Pickup 6-Lug 4WD
Block & U-bolt Kit
Pickup 6-Lug 4WD
1988-98 3.5"
$119.83
BUK3561-SK
Silverado, Sierra 1500 6-Lug 2&4WD
Block & U-bolt Kit
Silverado, Sierra 1500 6-Lug 2&4WD
2007-18 3.5"
$119.83
BUK3561-SK
Silverado, Sierra 1500, 2500 6-Lug 4WD
Block & U-bolt Kit
Silverado, Sierra 1500, 2500 6-Lug 4WD
1999-06 1.25"
$72.78
BUK12563-SK
Silverado, Sierra 1500, 2500 6-Lug 4WD
Block & U-bolt Kit
Silverado, Sierra 1500, 2500 6-Lug 4WD
1999-06 3.5"
$126.50
BUK3564-SK
Silverado, Sierra 1500, 2500 6-Lug 4WD
Block & U-bolt Kit
Silverado, Sierra 1500, 2500 6-Lug 4WD
1999-06 4.5"
$138.16
BUK4565-SK
Silverado, Sierra 1500, 2500 6-Lug 4WD
Block & U-bolt Kit
Silverado, Sierra 1500, 2500 6-Lug 4WD
2007-18 1.25"
$72.78
BUK12563-SK
Silverado, Sierra 2500 8-Lug 4WD
Block & U-bolt Kit
Silverado, Sierra 2500 8-Lug 4WD
2011-19 2"
$115.20
BUK2789-SK
Silverado, Sierra 2500, 2500HD 4WD
Block & U-bolt Kit
Silverado, Sierra 2500, 2500HD 4WD
2000-07 2" flat
$115.20
BUK2082F-SK
Silverado, Sierra 2500, 2500HD 4WD
Block & U-bolt Kit
Silverado, Sierra 2500, 2500HD 4WD
2000-10 1.25"
$72.78
BUK12581-SK
Silverado, Sierra 2500, 2500HD 4WD
Block & U-bolt Kit
Silverado, Sierra 2500, 2500HD 4WD
2000-10 2"
$115.20
BUK2082-SK
Silverado, Sierra 2500, 2500HD 4WD
Block & U-bolt Kit
Silverado, Sierra 2500, 2500HD 4WD
2000-10 3.5"
$126.50
BUK3584-SK
Silverado, Sierra 2500, 2500HD 4WD
Block & U-bolt Kit
Silverado, Sierra 2500, 2500HD 4WD
2000-10 4.5"
$138.16
BUK4584-SK
Silverado, Sierra 2500HD, 3500HD (Non-Dually) 2&4WD
Block & U-bolt Kit
Silverado, Sierra 2500HD, 3500HD (Non-Dually) 2&4WD
2011-19 5.5"
$142.49
BUK5795-SK
Silverado, Sierra 6-Lug 2WD
Block & U-bolt Kit
Silverado, Sierra 6-Lug 2WD
1999-06 1.25"
$72.78
BUK12562-SK
Silverado, Sierra 6-Lug 4WD
Block & U-bolt Kit
Silverado, Sierra 6-Lug 4WD
1999-06 2"
$115.20
BUK2063-SK
Silverado, Sierra 6-Lug 4WD
Block & U-bolt Kit
Silverado, Sierra 6-Lug 4WD
2007-18 2"
$115.20
BUK2063-SK

ReadyLift

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
Chevy, GMC Pickup, Silverado, Sierra 1" rear block kit
Chevy, GMC Pickup 6-Lug 2&4WD
1988-98 1"
$149.95
66-3051-RL
Chevy, GMC Pickup 6-Lug 2&4WD
Chevy, GMC Pickup, Silverado, Sierra 2" rear block kit
Chevy, GMC Pickup 6-Lug 2&4WD
1988-98 2"
$159.95
66-3052-RL
Silverado, Sierra 1500 2&4WD (Except 2007 Classic. Replaces factory block)
1999-21 2&4WD Chevy Silverado, GMC Sierrra 1500 rear block kit
Silverado, Sierra 1500 2&4WD (Except 2007 Classic. Replaces factory block)
2007-21 1"
$159.95
66-3002-RL
Silverado, Sierra 1500 2&4WD (Excludes 2007 Classic)
1999-21 Chevy Silverado, GMC Sierrra rear block kit
Silverado, Sierra 1500 2&4WD (Excludes 2007 Classic)
2007-21 1.75"
$159.95
66-3003-RL
Silverado, Sierra 1500 2&4WD (Includes 2007 Classic. Replaces factory block)
1999-21 Chevy Silverado, GMC Sierrra rear block kit
Silverado, Sierra 1500 2&4WD (Includes 2007 Classic. Replaces factory block)
1999-06 1"
$159.95
66-3003-RL
Silverado, Sierra 1500 2&4WD (Includes 2007 Classic.)
1999-21 2&4WD Chevy Silverado, GMC Sierrra 1500 rear block kit
Silverado, Sierra 1500 2&4WD (Includes 2007 Classic.)
1999-06 2.25"
$159.95
66-3002-RL
Silverado, Sierra 1500 2WD (vehicles without OEM block. Includes 2007 Classic)
1999-21 Chevy Silverado, GMC Sierrra rear block kit
Silverado, Sierra 1500 2WD (vehicles without OEM block. Includes 2007 Classic)
1999-06 3"
$159.95
66-3003-RL
Silverado, Sierra 2500HD 2&4WD (except vehicles with factory top overload or Camper pkg)
2011-19 2&4WD Chevy Silverado, GMC Sierra 2500HD 1" rear block kit
Silverado, Sierra 2500HD 2&4WD (except vehicles with factory top overload or Camper pkg)
2011-19 1"
$149.95
66-3111-RL
Silverado, Sierra 2500HD 2&4WD (except vehicles with factory top overload or Camper pkg)
2011-21 2&4WD Chevy Silverado, GMC Sierra 2500HD 2" rear block kit
Silverado, Sierra 2500HD 2&4WD (except vehicles with factory top overload or Camper pkg)
2011-21 2"
$159.95
66-3112-RL
Silverado, Sierra 2500HD 2&4WD (with factory trailer package)
2011-19 2&4WD Chevy Silverado, GMC Sierra 2500HD, 3500HD 1" rear block kit
Silverado, Sierra 2500HD 2&4WD (with factory trailer package)
2011-19 1"
$149.95
66-3121-RL
Silverado, Sierra 2500HD, 3500HD 2&4WD
Chevy, GMC Pickup, Silverado, Sierra 1" rear block kit
Silverado, Sierra 2500HD, 3500HD 2&4WD
2000-10 1"
$149.95
66-3051-RL
Silverado, Sierra 2500HD, 3500HD 2&4WD
Chevy, GMC Pickup, Silverado, Sierra 2" rear block kit
Silverado, Sierra 2500HD, 3500HD 2&4WD
2000-10 2"
$159.95
66-3052-RL
Silverado, Sierra 2500HD, 3500HD 2&4WD
2011-19 2&4WD Silverado, Sierra 2500HD, 3500HD 4" rear block kit
Silverado, Sierra 2500HD, 3500HD 2&4WD
2011-19 4"
$179.95
26-3204-RL
Silverado, Sierra 2500HD, 3500HD 2&4WD
2011-19 2&4WD Silverado, Sierra 2500HD, 3500HD 5" rear block kit
Silverado, Sierra 2500HD, 3500HD 2&4WD
2011-19 5"
$189.95
26-3205-RL
Silverado, Sierra 2500HD, 3500HD 2&4WD (with factory trailer package & overloads)
2011-19 2&4WD Chevy, Silverado, GMC Sierra 2500HD, 3500HD 2" rear block kit
Silverado, Sierra 2500HD, 3500HD 2&4WD (with factory trailer package & overloads)
2011-19 2"
$159.95
66-3122-RL
Silverado, Sierra 3500HD 2&4WD
2011-19 2&4WD Chevy Silverado, GMC Sierra 2500HD, 3500HD 1" rear block kit
Silverado, Sierra 3500HD 2&4WD
2011-19 1"
$149.95
66-3121-RL
Silverado, Sierra 3500HD Dually 2&4WD
2011-19 2&4WD Chevy, Silverado, GMC Sierra 2500HD, 3500HD 2" rear block kit
Silverado, Sierra 3500HD Dually 2&4WD
2011-19 2"
$159.95
66-3122-RL
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