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SuspensionMAXX Rear Block and Leaf Spring U-Bolts - Lock Down Strength, Lift with Confidence. When it comes to your suspension, U-bolts are more than hardware - they\u0027re your connection to control and safety.\u003C\/p\u003E\u003Cp\u003ESuspensionMAXX Leaf Spring U-Bolts are engineered for maximum clamping force and long-lasting durability, whether you\u0027re upgrading leaf springs or installing a lift kit.\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWhy truck owners rely on SuspensionMAXX U-Bolts:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003E\u003Cstrong\u003EEngineered for Lifted Trucks:\u003C\/strong\u003E Built longer and stronger to accommodate aftermarket leaf spring setups and blocks.\u003C\/li\u003E\u003Cli\u003E\u003Cstrong\u003EHeavy-Duty Strength:\u003C\/strong\u003E Made from high-tensile steel for maximum holding power under load and off-road stress.\u003C\/li\u003E\u003Cli\u003E\u003Cstrong\u003ESecure Fit, No Slippage:\u003C\/strong\u003E Keeps your axle securely fastened to the leaf springs - essential for safe towing and trail use.\u003C\/li\u003E\u003Cli\u003E\u003Cstrong\u003ECorrosion-Resistant Coating:\u003C\/strong\u003E Withstands moisture, salt, and rough terrain to maintain integrity over time.\u003C\/li\u003E\u003Cli\u003E\u003Cstrong\u003EComplete Kit Ready to Install:\u003C\/strong\u003E Includes hardened washers and high-strength nuts for a precise, secure fit.\u003C\/li\u003E\u003C\/ul\u003E\u003Cp\u003EWhether you\u0027re reinforcing your rear suspension or upgrading for off-road duty, SuspensionMAXX Leaf Spring U-Bolts deliver the strength and confidence your truck demands\u003C\/p\u003E\u003Cp\u003EHeavy Duty Rear Block and U-Bolt Kit 2.0 inch for 2020-2025 Silverado\/Sierra 3500 (DRW) dually 2WD\/4x4 w\/ 3 inch Wide Leaf Springs.\u003C\/p\u003E\u003Cp\u003EFeatures 3\/4 inch diameter larger than stock Super Heavy Duty U bolts.\u003C\/p\u003E\u003Cp\u003EThe SuspensionMAXX SMX-156220 Heavy Duty Block and U-Bolt Rear Leaf Spring Leveling Kit increases rear suspension height by 2.0 inch, and is ideal for increasing ground clearance or fitting larger wheels and tires.\u003C\/p\u003E\u003Cp\u003EFits 2020-2021 Chevrolet\/GMC Silverado\/Sierra 3500 DRW 4x4 and 2wd vehicles with top mounted overload springs. Block and U-Bolt kits can also be used to level vehicles 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\u0027t crack or compress.\u003C\/p\u003E\u003Cp\u003EThe Super Heavy Duty U-Bolts are larger than stock and measure 3\/4 inch in diameter. SuspensionMAXX includes all hardware needed and components are quickly installed using job specific tools.\u003C\/p\u003E\u003Cp\u003EInstallation involves no major alterations to the vehicle and the truck or SUV can easily be put back to stock specifications. 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