Suspension and Components› Suspension Kits

SuspensionMAXX

1-Inch Rear Lift Block and U-Bolt Kit

$149.99

SKU: SMX-155010

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 SMX-155010 is a rear block and U-bolt suspension kit. It provides a 1-inch rear lift using block-style lift components. The kit is constructed from heat-treated 4140 alloy steel, manufactured in the USA, and includes 5/8 inch diameter U-bolts.
Show original supplier description
The SuspensionMAXX SMX-155010 is a heavy-duty rear block and U-bolt kit designed to increase rear suspension height by 1 inch. This kit is ideal for gaining additional ground clearance or accommodating larger wheels and tires. Constructed from heat-treated 4140 alloy steel, it ensures durability and strength. This kit is manufactured in the USA, reflecting a commitment to quality and domestic production. It includes solid steel blocks that are CNC drilled and located, along with heavy-duty U-bolts, tall nuts, and other necessary hardware for installation. The SuspensionMAXX SMX-155010 is specifically designed for 4WD models including the Avalanche, Suburban 2500, Silverado 2500, 2500 HD, 3500, 3500HD, and Yukon XL 2500. A critical note for fitment is that it is compatible only with models equipped with 5/8 inch diameter U-bolts.

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-155010
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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