Suspension and Components› Suspension Kits

SuspensionMAXX

2-Inch Rear Block and U-Bolt Kit

$169.99

SKU: SMX-155020

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The SuspensionMAXX Heavy Duty Rear Block and U-Bolt Kit is a 2-inch suspension kit designed to increase rear suspension height. It is ideal for leveling vehicles, accommodating larger wheels and tires, or supporting heavy loads. The kit includes steel blocks, high-strength U-bolts, and fasteners for durability and longevity. Installation is reversible and does not require extensive modifications.
Show original supplier description
The SuspensionMAXX Heavy Duty Rear Block and U-Bolt Kit SMX-155020 provides a 2-inch increase in rear suspension height, making it ideal for leveling your truck or SUV, fitting larger wheels and tires, or compensating for sagging suspension from heavy loads like campers. Constructed from durable steel blocks and high-strength Grade 8 U-bolts with premium hardware, this kit is engineered for longevity and will not crack or compress under stress. This kit is designed for specific applications, fitting 2000-2010 Chevrolet Avalanche 2500 4x4, 2000-2010 Chevrolet/GMC Silverado/Sierra 2500 & 2500HD 4x4, 2000-2010 Chevrolet/GMC Silverado/Sierra 3500 & 3500HD 4x4, and 2000-2010 Chevrolet/GMC Suburban 2500/Yukon XL 2500 4x4 vehicles that are equipped with 8-bolt wheels and 5/8 inch diameter U-bolts. Ensure your vehicle has these specifications for proper fitment. It typically takes approximately 1.5 hours to complete and requires no major alterations to the vehicle, allowing for easy reversion to stock specifications. SuspensionMAXX backs this kit with excellent customer service and technical support, along with a MAXX Structural Lifetime Warranty. All necessary hardware is included.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandSuspensionMAXX
Part NumberSMX-155020
CategorySuspension and Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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