RGR NA MIATA "ULTRA" CHASSIS MOUNTED FRONT SPLITTER KIT

The RGR NA Miata "Ultra" Front Splitter Kit represents the culmination of months of research and development. Splitters on the market typically fall into one of two categories: cosmetic additions that provide little aerodynamic benefit, or track-focused options requiring significant vehicle modifications such as cutting, drilling, or removal of parts.

This kit strikes a balance by offering real aerodynamic advantages without the need for permanent modifications. It’s a fully bolt-on solution that requires no drilling, cutting, or altering of the vehicle. Installation and removal are straightforward and won't leave marks on the vehicle.

Key benefits include lightweight aluminum construction and 5-way adjustability. The complete kit weighs 14.7 lbs—approximately 0.7% of the total weight of a 1990 Miata—while the non-splitter components weigh just 3.7 lbs.

The Ultra Front Splitter is designed to stabilize airflow under the car, reducing drag and increasing high-speed stability, while providing a slight but noticeable increase in downforce.

For optimal performance, this kit pairs well with NA Spats. If the bumper area isn't flat, it’s recommended to use the Bumper/Splitter Seal to fill any gaps between the lip/bumper and the splitter. This is especially important if the vehicle lacks a lip.

Base Kit Includes:

• Cardboard Splitter Template
• Aluminum Frame Mounts
• Aluminum Mount Brace
• Splitter Rods (With Stainless Steel Hardware)
• Mounting Stainless Steel Hardware (No Splitter hardware)
• Instructions

Full Kit Includes:

• Aluminum Frame Mounts
• Aluminum Mount Brace
• Splitter Rods (With Stainless Steel Hardware)
• Mounting Hardware
• 1/8" Thick Aluminum Splitter
• 1/8" Stainless Steel Splitter Hardware
• Splitter Trim
• Optional Black Powder Coating

Additional Notes:

• For international shipping, please contact for a quote.
• The aluminum splitter blade is sold raw and available in 1/8" thickness. Custom materials are available upon request—contact for a custom quote.
• For vehicles engaged in door-to-door racing or frequent contact, it’s recommended to use the provided template to cut the splitter from a different material or inquire about custom material options.
• If the vehicle does not have a lip, the Bumper Seal is highly recommended (available here).

Disclaimer: This product is intended for off-road use only.

For more detailed installation instructions, follow this link.

Check out an informative video from Flyin' Miata discussing these splitters and spats here.