Key Features and Benefits
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Durable urethane construction: Offers flexibility and impact resistance compared with more brittle aero materials.
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Application-specific design: Developed for the Mazda Roadster ND platform.
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Aerodynamic-inspired profile: Designed to help manage airflow approaching the underside of the front bumper.
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Aggressive appearance: Extends the front bumper approximately 25mm lower and 47mm farther forward.
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Unpainted black finish: Provides a base for professional painting or custom finishing.
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GReddy aluminum emblem: Includes a branded finishing detail.
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Factory-bumper integration: Designed as a cover-style front skirt rather than a complete bumper replacement.
The GReddy lip adds styling and changes the bumper’s airflow characteristics, but GReddy does not publish verified downforce or lap-time improvements for this specific part.
GReddy 17040141 Specifications
| Specification | Details |
|---|---|
| Brand | GReddy / TRUST |
| Manufacturer part number | 17040141 |
| Product type | Front lip spoiler / front skirt |
| Vehicle platform | Mazda MX-5 Miata ND |
| Material | Urethane |
| Finish | Unpainted black |
| Design | Cover-style front lip |
| Approximate bumper drop | 25mm |
| Approximate forward extension | 47mm |
| Mounting method | Double-sided tape and tapping screws |
| Drilling required | Two holes in the bumper underside |
| Included accessory | GReddy aluminum emblem |
Vehicle Fitment – Mazda MX-5 Miata ND
| Years | Make | Model | Body style |
|---|---|---|---|
| 2016–2020 | Mazda | MX-5 Miata | Soft-top roadster |
| 2017–2020 | Mazda | MX-5 Miata RF | Retractable fastback |
Engine: 2.0L SKYACTIV-G four-cylinder, U.S.-market applications.
Chassis: ND-generation Mazda MX-5.
GReddy’s Japanese application information also covers certain ND Roadster and Roadster RF vehicles sold outside the United States. Verify front-bumper compatibility, particularly if the car has factory accessory aero parts, a special-edition bumper treatment, or an aftermarket front bumper.
How the GReddy Front Lip Changes the ND Miata’s Appearance
The GReddy 17040141 creates a more pronounced lower bumper edge without dramatically altering the original Mazda design.
The approximately 25mm lower front edge gives the vehicle a more planted visual stance, while the 47mm forward extension creates a longer, more defined front profile.
Unlike a complete bumper conversion, this cover-style spoiler works with the existing bumper shape, helping preserve the Miata’s factory character.
Its urethane construction also makes it a practical choice for a street-driven sports car, although the added extension still reduces clearance around steep driveways, parking stops, and road obstacles.
Does a Front Lip Spoiler Improve Aerodynamics?
A front lip changes how air interacts with the leading edge of the vehicle.
GReddy designed this spoiler with attention to airflow beneath the bumper, where managing air movement can be important to overall aerodynamic behavior.
However, a front lip is not automatically equivalent to a race-engineered splitter. Its aerodynamic effect depends on vehicle ride height, speed, surrounding bodywork, and the rest of the car’s underbody design.
For street-driven ND Miatas, the most immediately noticeable benefit will generally be the more aggressive front-end styling.
Drivers planning additional aerodynamic upgrades should consider the entire vehicle rather than assuming a single lip will produce measurable downforce.
GReddy Urethane Front Lip vs. Fiberglass Front Spoilers
| Feature | GReddy urethane lip | Typical fiberglass lip |
|---|---|---|
| Material | Urethane | Fiberglass-reinforced resin |
| Flexibility | Generally more flexible | Generally more rigid |
| Appearance | GReddy-specific styling | Varies by manufacturer |
| Paint preparation | Required for color matching | Usually required |
| Damage resistance | Can tolerate some flexing | More prone to cracking from impacts |
| Installation | Application-specific | Varies by product |
Material alone does not guarantee resistance to curb strikes or road debris. Proper installation and sufficient ground clearance remain important.
Installation Considerations
The GReddy 17040141 is designed to mount over the factory front bumper.
According to GReddy, installation uses double-sided tape and two tapping screws, with two holes required on the underside of the bumper.
Before installation, test-fit the lip and confirm that it aligns correctly with the bumper contours.
Clean the mounting surfaces thoroughly, follow the adhesive manufacturer’s preparation requirements, and ensure the lip is correctly positioned before securing the fasteners.
Because the spoiler extends below the original bumper, inspect driveway and ramp clearance after installation.
For a painted finish, have the urethane surface prepared with materials suitable for flexible automotive exterior components.
Frequently Asked Questions
Does GReddy 17040141 fit a 2016 Mazda MX-5 Miata?
Yes. The 2016 ND Miata is the primary U.S.-market application for this spoiler.
Will it fit a Mazda MX-5 Miata RF?
GReddy includes the ND Roadster RF in its application information. Confirm the original bumper configuration before ordering.
Is the spoiler painted?
No. It is supplied in unpainted black urethane.
Does installation require drilling?
Yes. GReddy specifies two holes on the underside of the bumper, along with tape and tapping screws.
How much lower does the spoiler sit?
GReddy specifies an approximately 25mm lower profile compared with the factory bumper.
Does this front lip increase horsepower?
No. It is an exterior styling and aerodynamic component, not an engine or exhaust modification.
Give Your Mazda Miata an Authentic GReddy Front-End Upgrade
The GReddy 17040141 Front Lip Spoiler is an excellent choice for ND Miata owners who want a more aggressive appearance without replacing the complete front bumper.
With its durable urethane construction, factory-bumper-oriented design, and genuine GReddy styling, this front lip offers a focused exterior upgrade for the fourth-generation Mazda MX-5.
Upgrade your ND Miata with the GReddy 17040141 Front Lip Spoiler and bring authentic Japanese performance styling to your build.


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