Find the Block and U-Bolt Kits For Your Truck
Displaying 24 out of 65 products available
1.5" Rear block & U-bolt kit
1.5" rear lift for ARC suspension
2019-2020 GMC Sierra 1500 Denali 1.5" Rear block with shock extensions
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2020-2021 DRW Rear Block and U-Bolt Kit 2"
Fits 2020-2021 Silverado/Sierra 3500 DRW Dually 2WD/4x4 w/ 3" Wide Leaf Springs. Features 3/4" diameter larger than stock Super Heavy Duty U bolts. For vehicles with top-mounted overload springs.
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Heavy Duty Rear Block and U-Bolt Kit 2"
Fits 2011-2021 Silverado/Sierra 2500-3500 2WD/4x4 w/ 3" Wide Leaf Springs. Features larger than stock Super Heavy Duty 3/4" diameter U-Bolts. For vehicles with top mounted overload springs. *Not compatible with 2020-2021 DRW
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2020-2021 DRW Rear Block and U-Bolt Kit 1.5"
Fits 2020-2021 Silverado/Sierra 3500 DRW Dually 2WD/4x4 w/ 3" Wide Leaf Springs. Features 3/4" diameter larger than stock Super Heavy Duty U bolts. For vehicles with top-mounted overload springs.
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Heavy Duty Rear Block and U-Bolt Kit 1.5"
Fits 2011-2021 Silverado/Sierra 2500-3500 2WD/4x4 w/ 3" Wide Leaf Springs. Features larger than stock Super Heavy Duty 3/4" diameter U-Bolts. For vehicles with top mounted overload springs. *Not compatible with 2020-2021 DRW
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Heavy Duty Rear Block and U-Bolt Kit 1"
Fits 2011-2021 Silverado/Sierra 3500 2WD/4x4 w/ 3" Wide Leaf Springs. Features 3/4" diameter larger than stock Super Heavy Duty U bolts. For vehicles with top-mounted overload springs. *Not compatible with 2020-2021 DRW
View DetailsHeavy Duty Rear Block and U-Bolt Kit 2"
Fits 2006-2008 Dodge Ram 1500 4x4 w/ Single Center Bolt
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Heavy Duty Rear Block and U-Bolt Kit 2"
Fits 2002-2005 Ram 1500 4x4 w/ Single Center Bolt
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Heavy Duty Rear Block and U-Bolt Kit 2" - Diesel w/ Dual Center Bolts & 9/16 Dia x 4-1/16 Width U-Bolts
Fits 2003-2013 Ram 2500 4x4 Diesel Engine w/ Dual Center Bolts and 9/16 diameter x 4-1/16 Width U-Bolts
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Heavy Duty Rear Block and U-Bolt Kit 2" - Gas w/ Dual Center Bolts & 9/16 dia. x 3-1/2 Width U-Bolts
Fits 2003-2013 Ram 2500 4x4 Gas Engine w/ Dual Center Bolts and 9/16 diameter x 3-1/2 Width U-Bolts
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2020-2021 DRW Rear Block and U-Bolt Kit 1"
Fits 2020-2021 Silverado/Sierra 3500 DRW Dually 2WD/4x4 w/ 3" Wide Leaf Springs. Features 3/4" diameter larger than stock Super Heavy Duty U bolts. For vehicles with top-mounted overload springs.
View DetailsHeavy Duty Rear Block and U-Bolt Kit 1.5"
Fits 2006-2008 Ram 1500 4x4 w/ Single Center Bolt
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Heavy Duty Rear Block and U-Bolt Kit 1.5"
Fits 2002-2005 Ram 1500 4x4 w/ Single Center Bolt
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Heavy Duty Rear Block and U-Bolt Kit 1.5" - Diesel w/ Dual Center Bolts & 9/16 Dia x 4-1/16 Width U-Bolts
Fits 2003-2013 Ram 2500 4x4 Diesel Engine w/ Dual Center Bolts and 9/16 diameter x 4-1/16 Width U-Bolts
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Heavy Duty Rear Block and U-Bolt Kit 1.5" - Gas w/ Dual Center Bolts & 9/16 dia x 3-1/2 Width U-Bolts
Fits 2003-2013 Ram 2500 4x4 Gas Engine w/ Dual Center Bolts and 9/16 diameter x 3-1/2 Width U-Bolts
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Heavy Duty Rear Block and U-Bolt Kit 1.5" - Gas w/ Dual Center Bolts & 9/16 Dia x 4-1/16 Width U-Bolts
Fits 2003-2013 Ram 3500 4x4 Gas Engine w/ Dual Center Bolts & 9/16 Dia x 4-1/16 Width U-Bolts
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Heavy Duty Rear Block and U-Bolt Kit 2"
Fits 2000-2010 Silverado 2500 & 2500HD/3500 & 3500HD, 2500 Suburban, 2500 Avalanche all w/ 8-Bolt Wheel with 5/8 Dia. U-Bolts. 4x4 and AWD
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Heavy Duty Rear Block and U-Bolt Kit 2" - Diesel w/ Dual Center Bolts and 4-1/8" width U-Bolts
Fits 2003-2013 Ram 3500 4x4 Diesel Engine w/ Dual Center Bolts and 4-1/8" width U-Bolts
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Heavy Duty Rear Block and U-Bolt Kit 2" - Diesel w/ Dual Center Bolts, 9/16 diameter x 4-1/8 width U-Bolts, and equipped with top mount overload springs
Fits 2003-2013 Ram 3500 4x4 Diesel Engine w/ Dual Center Bolts, 9/16 diameter x 4-1/8 width U-Bolts, and equipped with top mount overload springs
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Heavy Duty Rear Block and U-Bolt Kit 2" - Gas Engine w/ Dual Center Bolts, 9/16" diameter x 4-1/16 width U-Bolts, and equipped with top mount overload springs
Fits 2003-2013 Ram 3500 Gas Engine w/ Dual Center Bolts, 9/16" diameter x 4-1/16 width U-Bolts, and equipped with top mount overload springs
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Heavy Duty Rear Block and U-Bolt Kit 2" - Gas w/ Dual Center Bolts & 9/16 Dia x 4-1/16 Width U-Bolts
Fits 2003-2013 Ram 3500 4x4 Gas Engine w/ Dual Center Bolts & 9/16 Dia x 4-1/16 Width U-Bolts
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Heavy Duty Rear Block and U-Bolt Kit 2.0"
Fits 2011-2020 Silverado/Sierra 2500-3500 2WD/4x4 w/ 3" Wide Leaf Springs. Feature 3/4" diameter larger than stock Super Heavy Duty U bolts.
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Heavy Duty Rear Block and U-Bolt Kit 1"
Fits 2002-2005 Ram 1500 4x4 w/ Single Center Bolt
View DetailsSuspensionMaxx Block and U-Bolt Kits Are Designed Specifically For Your Truck
SuspensionMAXX Heavy Duty Block and U-Bolt Rear Leaf Spring Leveling Kits are available in a variety of lift heights that enable you to dial in just the right amount of rear lift for your needs. These leaf spring spacers are ideal for increasing ground clearance or fitting larger wheels and tires. Blocks and U-Bolts are also used to level trucks and SUV’s that carry heavy loads. SuspensionMAXX Heavy Duty Block and U-Bolt Kits are made with quality alloy metals for high strength and long life – they won’t crack or compress.
Suspension lift kits provide all hardware needed and are quickly installed using job specific tools. Installation involves no major alterations to the vehicle and the truck or SUV can easily be put back to stock specifications – great for leased vehicles. SuspensionMAXX offers a combination of the most vehicle applications and the largest number of height options per vehicle. Available for Dodge, Ford, GM, and Toyota trucks and SUV’s. Made in America and covered under the MAXX Warranty.
SuspensionMAXX Heavy Duty Block and U-Bolt Rear Leaf Spring Leveling Kits are the perfect solution for lifting or leveling the rear of trucks or SUV’s carrying heavy loads including campers. Such loads can cause rear suspension to compress and sag – thereby reducing rear ride height. Our Block and U-Bolt Kits simply fit between rear leaf springs and axle to compensate for suspension compression and restore rear ride height.
SuspensionMAXX specializes in providing many incremental lift height options. So you can obtain just the right size blocks you need to match the rear ride height to that of the front while carrying a load. Kits are also available for trucks equipped with top mounted overload springs, also called helper springs.
SuspensionMAXX Heavy Duty Block and U-Bolt Rear Leaf Spring Leveling Kits utilize premium quality high strength components including CNC drilled and located solid steel blocks, heavy-duty Grade 8 U-Bolts, tall nuts and extra thick washers. Installation can be done in about 1.5 hours.
Block and U-bolt Kits FAQ
No, this is not necessary on blocks less than 3” in height. No change in pinion angle is required for 1-2.5” of lift.
Suspension MAXX block and U-bolt kits use high-quality blocks from SOLID STEEL, unlike the cheaply made hollow cast import lift blocks. Each of our blocks is precision cut and CNC machined. We also use All- American made steel U-bolts, Tall Nuts, and Heavy Duty washers.
Factory shocks have 8-12” of shock travel and can work well with 1” and 1.5” of lift on most trucks. 2” of lift is the maximum height of lift we recommend; it depends on the application as some vehicles like F150 trucks have extremely long shocks from the factory. Shock extensions or longer shocks will be needed for sharp drop-offs, like speed bumps, for example.