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Suspension and Components› Suspension Kits

MSS

Triple Stack Spring Technology Suspension Kit

$1,680.00 $1,596.00 Save $84.00

SKU: 05aBMWX34MSU

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

It features a patented Triple Stack Spring Technology with three distinct spring rates. The low initial rate absorbs small road imperfections to increase grip, while a secondary rate enhances cornering and control. The stiffest, third rate resists sudden movements during acceleration, braking, or swerving, maintaining composure and traction.
Show original supplier description
The MSS Urban Full Adjustable Kit represents an award-winning, adjustable modular suspension solution developed with safety, comfort, and performance as core engineering principles. This kit utilizes a patented Triple Stack Spring Technology, incorporating three distinct spring rates to progressively manage road inputs and enhance vehicle dynamics. This absorption not only contributes to a more comfortable ride but also increases tire grip. As forces increase, the suspension transitions to a secondary spring rate, which is optimized to improve vehicle handling during cornering maneuvers, providing the driver with enhanced control. Finally, a third, stiffer spring rate engages to counteract sudden dynamic events, such as hard acceleration, braking, or evasive steering actions. By managing these forces, the suspension system ensures the vehicle remains composed and maintains optimal traction at each wheel, whether on dry or wet surfaces. This advanced design allows MSS to deliver a significant improvement in ride quality and dynamic performance. This specific kit is designed for the 2020-2021 BMW X4 M and 2020-2021 BMW X4 M Competition models. It is important to note that MSS items are sold as final sale with no support, warranty, or returns accepted.

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

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

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Specifications

BrandMSS
Part Number05aBMWX34MSU
CategorySuspension and Components
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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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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