Suspension and Components› Suspension Kits

SuspensionMAXX

Rear Lift Block and U-Bolt Kit

$149.99

SKU: SMX-156010

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

Easy — 1–2 hours

Overview

The SuspensionMAXX SMX-156010 is a rear block and U-bolt kit designed to provide a 1-inch lift. This kit is engineered for 2011-2026 Chevrolet Silverado and GMC Sierra 2500HD models, specifically for 2WD/4x4 configurations that do not have top mount overload springs and feature 3-inch wide leaf springs.
Show original supplier description
The SuspensionMAXX SMX-156010 Heavy Duty Rear Block and U-Bolt Kit provides a 1-inch rear lift for compatible trucks. This kit is ideal for leveling your vehicle, accommodating larger wheels and tires, or compensating for the sag caused by heavy loads such as campers. Constructed from strong and durable materials, including steel blocks and high-strength Grade 8 U-bolts, this kit is built for longevity. The Super Heavy Duty U-bolts are significantly larger than stock, measuring 3/4 inches in diameter. Installation is straightforward, requiring no extensive modifications and is fully reversible, allowing the vehicle to be returned to its stock specifications if desired. The kit includes all necessary hardware and can typically be installed in about 1.5 hours. This kit is specifically designed for 2011-2026 Chevrolet Silverado and GMC Sierra 2500HD 2WD/4x4 models. It is critical to note that this kit is NOT designed to fit 2500HD models equipped with top mount overload springs. Additionally, it requires 3-inch wide leaf springs for proper fitment. SuspensionMAXX products are 100% American-made and covered by the MAXX Structural Lifetime Warranty, ensuring quality and customer support.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSuspensionMAXX
Part NumberSMX-156010
CategorySuspension and Components

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy