What does the ADRO AT-M3 Wing HD Upgrade Kit actually add?

Roughly 192N (43.2 lbs) of additional downforce for about 35N (7.9 lbs) of drag at 180 km/h, measured at a fixed wing angle, from the gurney flap and the updated endplates together.

Will it fit my AT-R3 wing?

No. This kit is specific to the AT-M3 motorsport wing. The AT-R1, AT-R2, AT-R3 and AT-P wings use different endplate and trailing edge geometry.

Why do the gurney and the endplates ship together?

They are one system. The endplates carry the outer ends of the gurney flap, and each part addresses a different loss, so fitting one without the other gives up most of the benefit.

Do I need a new mainplane or new mounts?

No. That is the point of the kit. It uses the AT-M3 mainplane and mounting hardware you already have, which is what makes it the most cost-effective downforce available for the wing.

Can I trade the gain for straight-line speed?

Yes. The AT-M3 has eight degrees of adjustment, so you can take the full gain as downforce or wind the angle back for less drag, depending on the track.

The ADRO AT-M3 Wing HD Upgrade Kit is a pre-order with ADRO fulfilment scheduled for late September 2026. Contact us for the latest date before you order.

Description

Additional Info

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Description

ADRO AT-M3 Motorsport Wing HD Upgrade Kit, Gurney Flap and Endplates

The ADRO AT-M3 Wing HD Upgrade Kit is built on a simple premise: you already own the expensive, difficult part. The AT-M3 mainplane is the piece that takes real engineering to get right, and this kit makes it work harder without replacing it. A gurney flap for the trailing edge and a set of larger endplates to replace your originals together add roughly 192N (43.2 lbs) of downforce for about 35N (7.9 lbs) of drag at 180 km/h (112 mph), at a fixed wing angle. No new mainplane, no new mounts, no starting over.

How a Tab That Small Moves Numbers That Big

The gurney flap is a small tab standing proud of the trailing edge, and it punches far above its size. Air stacks up in front of it and rolls off the back into a pair of vortices sitting just behind the wing, which act like an invisible extension of its shape. The wing then behaves as though it were more curved than it physically is. That is how a component this small produces a gain this large: it changes what the air thinks the wing looks like, and it does so very efficiently.

What the Endplates Fix

The endplates attack a different loss entirely. Air always tries to spill around the ends of a wing, leaking from the high-pressure side to the low-pressure side, and every bit that escapes is downforce you paid for and did not receive. The updated plates are larger than the originals and angled inward at the lower edge rather than sitting flat, sealing more of the wing’s span so the pressure difference stays where it does work. They also carry the outer ends of the gurney, which is why the two parts ship together: this is one system, not two accessories.

Spending the Gain

Where the extra load from the ADRO AT-M3 Wing HD Upgrade Kit goes is the owner’s decision. The AT-M3’s eight degrees of adjustment mean you can take the full gain as downforce, or give some of it back for less drag and more straight-line speed, tuning the wing to the track, the setup and the driver. That flexibility is the practical argument for fitting the ADRO AT-M3 Wing HD Upgrade Kit rather than replacing the wing: the mainplane stays, and the adjustment range now spans a higher ceiling.

Features

Adds approximately 192N (43.2 lbs) of downforce for 35N (7.9 lbs) of drag at 180 km/h
Compatible with all ADRO AT-M3 motorsport wings
Endplates larger than the originals and angled inward to seal the wing span
Gurney flap mounts on 3M tape along the mainplane and fixes at each endplate
New mounting hardware included
Prepreg carbon fiber, the same motorsport-grade process as the wing itself
Uses the existing mainplane and mounts, no wing replacement needed

What’s Included

Endplates, left and right (x2)
Gurney flap (x1)
Mounting hardware (x1 set)

Applications

ADRO AT-M3 Motorsport Wing: all versions and all vehicle applications

Notes

This is a pre-order. ADRO fulfilment is scheduled for late September 2026 and your order is placed in that queue
The ADRO AT-M3 Wing HD Upgrade Kit fits the ADRO AT-M3 motorsport wing only and is not compatible with the AT-R1, AT-R2, AT-R3 or AT-P wings
The ADRO AT-M3 Wing HD Upgrade Kit is supplied as an upgrade kit only, the wing itself is not included
The published gain is measured at a fixed wing angle. Changing the angle after fitting will change both figures
Not sure which ADRO wing is on your car? contact us and we will confirm before you order.
Upgrades the standard ADRO AT-M3 carbon motorsport wing (R14A90-1501). The AT-M3 HD edition wing (R14A90-1502) already ships with these parts fitted, so this kit is not required for it.

Frequently Asked Questions

What does the ADRO AT-M3 Wing HD Upgrade Kit actually add? Roughly 192N (43.2 lbs) of additional downforce for about 35N (7.9 lbs) of drag at 180 km/h, measured at a fixed wing angle, from the gurney flap and the updated endplates together.
Will it fit my AT-R3 wing? No. This kit is specific to the AT-M3 motorsport wing. The AT-R1, AT-R2, AT-R3 and AT-P wings use different endplate and trailing edge geometry.
Why do the gurney and the endplates ship together? They are one system. The endplates carry the outer ends of the gurney flap, and each part addresses a different loss, so fitting one without the other gives up most of the benefit.
Do I need a new mainplane or new mounts? No. That is the point of the kit. It uses the AT-M3 mainplane and mounting hardware you already have, which is what makes it the most cost-effective downforce available for the wing.
Can I trade the gain for straight-line speed? Yes. The AT-M3 has eight degrees of adjustment, so you can take the full gain as downforce or wind the angle back for less drag, depending on the track.
When will it ship? The ADRO AT-M3 Wing HD Upgrade Kit is a pre-order with ADRO fulfilment scheduled for late September 2026. Contact us for the latest date before you order.

About ADRO

ADRO is an aftermarket manufacturer specializing in carbon fiber aerodynamic components for modern performance and sports cars, with aero engineered by former F1 and OEM designers. ADRO develops its parts using CFD simulation with a focus on adding usable downforce at minimal drag cost while preserving each vehicle’s factory balance and lines, producing them in high-grade prepreg carbon fiber. Bulletproof Automotive carries ADRO’s aero program for enthusiasts looking to make their cars faster where it counts.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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