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SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits

5.0 out of 5 stars 2 Customer Reviews

SuspensionMAXX heavy-duty rear block and U-bolt kits are the perfect solution for lifting or leveling, adding larger wheels and tires, or hauling heavy loads. The k

SuspensionMAXX heavy-duty rear block and U-bolt kits are the perfect solution for lifting or leveling, adding larger wheels and tires, or hauling heavy loads. The kits are available for most vehicles and in a variety of heights and configurations, including options for magnetic ride sensors with no change in ride or handling. SuspensionMAXX 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. This ensures durable, long life—they won't crack or compress—and a hassle-free installation when using job-s

All the results found for this search are Not In Stock.

Results 1 - 18 of 18

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2011-2021 SIERRA 3500 HD, SILVERADO 3500 HD - SMX-156710

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2011-2021 SIERRA 3500 HD, SILVERADO 3500 HD - SMX-156710

Suspension Blocks, Heavy Duty, Rear, 1.00 in., Steel, Heavy Duty U-Bolt, Chevy, GMC, RWD/4WD with 3.00 in. Wide Leaf Spring, Kit

Part Number: SPX-SMX-156710

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits SMX-156715

Suspension Blocks, Heavy Duty, Rear, 1.50 in., Includes U-Bolts, Chevrolet, GMC, 2500/3500, 4WD, Fits Trucks with 5/8 in. U-Bolts, Kit

Part Number: SPX-SMX-156715

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits SMX-156020

Suspension Lift, Leaf Spring Block, Steel, Rear, 2.0 in., U-Bolt, Chevy, GMC, Kit

Part Number: SPX-SMX-156020

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits SMX-156010

Suspension Lift, Leaf Spring Block, Steel, Rear, 1.0 in., U-Bolt, Chevy, GMC, Kit

Part Number: SPX-SMX-156010

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2014-2016 SIERRA 1500, SILVERADO 1500 - SMX-157020

Heavy Duty Block and U-Bolt Kit

Part Number: SPX-SMX-157020

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2015-2018 SIERRA 1500 - SMX-157710

Heavy Duty Block and U-Bolt Kit

Part Number: SPX-SMX-157710

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2014-2016 SIERRA 1500, SILVERADO 1500 - SMX-157010

Heavy Duty Block and U-Bolt Kit

Part Number: SPX-SMX-157010

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2007-2019 TUNDRA - SMX-184020

Suspension Blocks, Heavy Duty, Rear, 2.00 in., Includes U-Bolts, Toyota, Tundra, 4WD, Kit

Part Number: SPX-SMX-184020

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2014-2016 SIERRA 1500, SILVERADO 1500 - SMX-157015

Heavy Duty Block and U-Bolt Kit

Part Number: SPX-SMX-157015

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2007-2019 TUNDRA - SMX-184015

Suspension Blocks, Heavy Duty, Rear, 1.50 in., Includes U-Bolts, Toyota, Tundra, 4WD, Kit

Part Number: SPX-SMX-184015

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2007-2019 TUNDRA - SMX-184010

Suspension Blocks, Heavy Duty, Rear, 1.00 in., Includes U-Bolts, Toyota, Tundra, 4WD, Kit

Part Number: SPX-SMX-184010

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2011-2013 2500, 2003-2010 RAM 2500 - SMX-174120

Lift Blocks/U-Bolts, Heavy Duty, Steel, 2.0 in. Lift, Rear, Dodge, Ram, 4WD, Kit

Part Number: SPX-SMX-174120

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits SMX-155010

Suspension Blocks, Heavy Duty, Rear, 1.00 in., Includes U-Bolts, Chevrolet, GMC, 2500/3500, 4WD, Fits Trucks with 5/8 in. U-Bolts, Kit

Part Number: SPX-SMX-155010

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits SMX-156015

Suspension Blocks, Heavy Duty, Rear, 1.50 in., Steel, Heavy Duty U-Bolt, Chevy, GMC, RWD/4WD with 3.00 in. Wide Leaf Spring, Kit

Part Number: SPX-SMX-156015

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits SMX-155020

Suspension Blocks, Heavy Duty, Rear, 2.00 in., Includes U-Bolts, Chevrolet, GMC, 2500/3500, 4WD, Fits Trucks with 5/8 in. U-Bolts, Kit

Part Number: SPX-SMX-155020

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits SMX-156720

Suspension Blocks, Heavy Duty, Rear, 2.00 in., Includes U-Bolts, Chevrolet, GMC, 2500/3500, RWD/4WD, Fits Trucks with 3.00 in. Wide Leaf Springs, Kit

Part Number: SPX-SMX-156720

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2015-2018 SIERRA 1500 - SMX-157715

Heavy Duty Block and U-Bolt Kit

Part Number: SPX-SMX-157715

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

SuspensionMAXX Heavy-Duty Rear Block and U-Bolt Kits for 2015-2018 SIERRA 1500 - SMX-157720

Heavy Duty Block and U-Bolt Kit

Part Number: SPX-SMX-157720

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

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