Suspension and Components› Sway Bars and Components

R Theory Motorsports

Sway Bar End Link and Reinforcement Block Combo

$115.00

SKU: 998-556

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The R Theory Motorsports Sway Bar End Link and Reinforcement Block Combo is a suspension upgrade designed for the Mazda MX-5 Miata NA and NB series. This kit addresses common issues like broken sheet-metal sway bar mounting points and provides adjustability for custom suspension setups.
Show original supplier description
The R Theory Motorsports Sway Bar End Link and Reinforcement Block Combo is engineered to enhance the rear suspension of your Mazda MX-5 Miata (NA and NB series, 1990-2005). Factory sheet-metal sway bar mounts are a known weak point, prone to breaking under the stress of larger sway bars or aggressive driving. This combo directly addresses this by fortifying these mounts and providing adjustable end links for precise suspension tuning. Complementing these blocks are the adjustable Sway Bar End Links, constructed with Teflon-lined stainless steel rod ends, lightweight 6061 aluminum bodies, and corrosion-resistant hardware. These links offer a wide range of adjustability, from shorter than stock (98mm) to nearly touching the upper control arm, allowing you to eliminate preload and maintain proper car balance regardless of suspension modifications or ride height changes. This combo is an ideal solution for lowered Miatas, vehicles running larger sway bars, or any owner looking to replace worn-out factory components. Installation of this kit can lead to sharper handling, more consistent cornering performance, and ensures your suspension components work optimally with your setup.

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

BrandR Theory Motorsports
Part Number998-556
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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