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Chassis Components› Chassis and Frame Components

Ultra Racing

4-Point Rear Lower Chassis Brace

$430.00 $399.00 Save $31.00

SKU: UR-RL4-315

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Ultra Racing UR-RL4-315 is a 4-point rear lower chassis brace constructed from steel with a white finish. The brace connects and reinforces key structural points on the vehicle's chassis.
Show original supplier description
The Ultra Racing UR-RL4-315 is a 4-point rear lower chassis brace engineered to enhance vehicle stability and handling. Constructed from steel plates (4mm-5mm thick) and hollow steel tubes (1.2mm-1.6mm thick), this brace is designed to connect and reinforce critical structural points at the base of the vehicle, typically the subframe. During aggressive driving maneuvers like hard acceleration and cornering, a vehicle's chassis can experience significant flex and twist. This flexing compromises stability and responsiveness, leading to negative handling traits such as understeer and oversteer. The Ultra Racing lower chassis brace combats this by reducing chassis twisting, allowing suspension components to work more efficiently and maintaining optimal tire contact with the road. The direct result of reduced chassis flex is improved handling performance, enhanced grip, reduced body roll, and more precise steering response. These benefits make the vehicle feel more composed and predictable, especially in fast road and track applications.

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

BrandUltra Racing
Part NumberUR-RL4-315
CategoryChassis 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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