Suspension and Components› Suspension Kits

SuspensionMAXX

1.5-Inch Rear Lift Block and U-Bolt Kit

$175.99

SKU: SMX-174315

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-174315 is a heavy-duty rear block and U-bolt kit designed to provide a 1.5-inch lift. It is ideal for leveling vehicles, accommodating larger wheels and tires, or supporting heavy loads. This kit features steel blocks and high-strength U-bolts for durability. Installation is reversible and requires no major modifications to the vehicle.
Show original supplier description
The SuspensionMAXX Heavy Duty Rear Block and U-Bolt Kit (SMX-174315) offers a 1.5-inch increase in rear suspension height, making it an excellent solution for leveling your truck, fitting larger wheels and tires, or compensating for the sag caused by heavy loads like campers. This kit is constructed from quality alloy metals, including solid steel blocks and heavy-duty Grade 8 U-bolts with tall nuts and extra-thick washers, ensuring strength and longevity without cracking or compressing. The estimated installation time is approximately 1.5 hours, and the kit is backed by SuspensionMAXX's Technical Support Program. This kit is specifically designed for 2003-2013 Ram 3500 4x4 trucks equipped with a Diesel Engine, featuring Dual Center Bolts and 4-1/8 inch width U-Bolts. It is 100% American Made and comes with the MAXX Structural Lifetime Warranty, highlighting the manufacturer's commitment to quality and durability.

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-174315
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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