The "Winged Monster" Just Got More Monstrous

1,190 lbs. of Downforce.

 Same Drag. Impossible? Not Anymore.

When engineers from Porsche and Manthey collaborate, physics bends. The Manthey kit for sale delivers over 1,000 kg of downforce at 285 km/h—without adding the drag that kills straight-line speed.

The enlarged front lip with carbon reinforcement works with new wheel arch gurneys and flaps to plant the front axle. A smooth underbody feeds airflow to where it's needed most. The rear window? Replaced by a carbon cover saving 25% weight, topped with a carbon shark fin for cornering stability. Six additional roof fins channel hot air away from the front radiator—cooler intake temps mean more power.

The split carbon DRS wing blade with enlarged end plates adapts to conditions. The wider rear diffuser with longer carbon fins transforms airflow into grip. Carbon aerodiscs on the rear axle cut drag. Every element talks to every other element. The result is a system, not a collection of parts.

Higher cornering speeds. Maximized stability. And the confidence to use all of it.

The Secret Weapon Underneath Your Porsche

Real motorsport enthusiasts know: what you can't see often matters most.

When you invest in your Manthey kit, you're getting the most efficient underbody engineering to ever carry the Manthey label.

150cm turning vanes run the length of the underbody, generating downforce that's neutral across all driving conditions. Every surface has been smoothed, every contour optimized to feed these vanes perfect airflow. The result is constant downforce whether you're trail-braking into a hairpin or flat-out through a kink.

Porsche and Manthey didn't just bolt on parts. They reimagined what a GT3 underbody could be—using development DNA from the record-breaking 911 GT3 RS (Type 992.1) Manthey Kit.

You won't see it from the driver's seat. But you'll feel it in every high-speed transition.

Coilover Suspension

That Adapts to the Track—and even Nürburgring's.

Manthey wasn't shaped by marketing departments. It was forged on racetracks like Spa, Monza, and the Nürburgring. The Manthey kit brings that obsession to your GT3 RS with semi-active coilovers that think faster than you can react.

Spring rates jump 30% front, 15% rear—calibrated specifically for the kit's extreme downforce. Four wheel sensors. Three body acceleration sensors. A control unit processing it all in real time. Unlike standard single-valve dampers, these use separate compression and rebound valves, independently controlled for millisecond-perfect adaptation.

Normal mode for the drive to the track. Sport for warm-up. Track for the session—and manual adjustability via the steering wheel when you want to fine-tune. The car dives less. It pitches less. It rolls less. The aerodynamic platform stays stable. And you stay faster.

Shrink the Gap 

Between Braking Point and Apex

The meters between your braking point and the corner apex? That's where races are won. The Porsche Manthey kit for sale attacks that zone with brake components developed for the relentless demands of trackday use.

Stainless steel-sleeved brake lines eliminate compliance. The pedal response is immediate, the feedback honest. For PCCB-equipped cars, optional racing pads deliver consistent friction across temperature ranges, improved fade resistance, and modulation that lets you threshold brake with confidence.

Low disc attack means your rotors survive the season. High performance means you survive the braking zone faster than ever.

Details That Remind You—This Is No Production Car

The Manthey kit transforms your presence. Illuminated carbon door sills glow with red and white Manthey logos. LED projectors cast the emblem onto asphalt every time you enter or exit. Carbon aerodiscs wear color-matched foiling that completes the visual statement.

Optional door graphics in neodymium, white, or black. A track-specific tow strap in red, black, or yellow—front and rear compatible, removable for street use.

These aren't dealer add-ons. They're integrated elements of a cohesive vision: a GT3 RS that looks as capable as it is. As exclusive as it performs.

The Wheel Upgrade

That Saves 13lbs. of Unsprung Mass

Your Manthey kit for sale deserves wheels engineered specifically for its aerodynamic loads. Enter the Manthey-developed 20/21-inch lightweight wheel set.

Forged aluminum construction delivers rigidity without the weight penalty. At 13lbs. lighter than standard aluminum wheels, response sharpens. Control tightens. And every input translates to immediate chassis reaction.

Available in Brilliant Silver, Satin Black, or Neodymium. Designed for the Manthey kit's extreme downforce. Compatible with your existing center-lock setup.

Or run the kit with your factory aluminum or optional magnesium wheels. The choice is yours—the performance is guaranteed.

The GT3 RS Manthey Kit: Limited Production. Unlimited Capability.

You searched for a Porsche Manthey kit for sale because you refuse to leave performance on the table. Champion Porsche is your Manthey-Certified installation center—factory-trained technicians, genuine components, warranty intact.

Production is limited. Installation slots at certified centers are scarce. And track season is approaching fast.

Get your personalized quote, financing options, and installation timeline within 24 hours.