Exterior Components› Body Panels and Components

FS Performance Engineering

Front Splitter Kit

$449.99

SKU: NAA-FMU

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 FS Performance Engineering NAA-FMU is a chassis-mounted front splitter kit designed for the 1989-1997 NA Miata. It is constructed from high-grade aluminum and features forward mounts for optimal placement. This kit provides aerodynamic benefits such as reduced drag and improved high-speed stability.
Show original supplier description
The FS Performance Engineering NAA-FMU is a track-oriented, chassis-mounted front splitter kit specifically designed for the 1989-1997 Mazda Miata NA. This kit aims to provide significant aerodynamic performance improvements without requiring any drilling, cutting, or permanent modifications to the vehicle, making it a completely bolt-on solution. Its design facilitates easy installation and removal, leaving no marks on the car. Constructed from various types of high-grade aluminum, this splitter is built to withstand demanding conditions. It features a lightweight, 5-way adjustable design that mounts directly to the chassis. The kit includes all necessary hardware, FSPE Splitter Rods, aluminum splitter brackets and reinforcements, 3D printed splitter ramps, chassis mounts, and rounded edge trim. Two mounting options are available: Forward Mounts (NAA-FMU), which position the mounts further forward for ideal space, and Standard Mounts (NAA-SMU), which mount further back and may include additional reinforcements. The choice between these options depends on the vehicle's specific configuration and space constraints, such as the presence of oil coolers or intercooler piping. The aerodynamic benefits of the RGR ULTRA Splitter include stabilized and smoothed airflow beneath the front of the car, leading to reduced drag, improved high-speed stability, and noticeable downforce gains. The product is intended for off-road use only.

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

BrandFS Performance Engineering
Part NumberNAA-FMU
CategoryExterior 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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