Porsche’s Sonderwunsch division exists for clients who want to push far beyond paint-to-sample restraint, and this one-off 911 GT2 RS Flachbau shows just how far that brief can go.
Created for a US customer and shown during Monterey Car Week, the car reimagines the Slant Nose idea through the lens of a 991.2-generation GT2 RS.
It’s a street-legal tribute with a competition edge, drawing from Porsche’s 1978 935 “Moby Dick” while using one of the brand’s most aggressive modern 911s as its foundation.
At a glance
- Porsche Sonderwunsch has built a one-off 911 GT2 RS Flachbau for a US customer.
- The car replaces the standard 911 face with slim LED lighting, revised aero and a Slant Nose body inspired by the 1978 935 “Moby Dick”.
- Shown at Monterey Car Week, it remains street legal and is 70 lbs lighter than the donor GT2 RS.
A Slant Nose idea sharpened for the GT2 RS
The Flachbau RS doesn’t simply add retro cues to a GT2 RS.
Its defining change is the front end, where Porsche has removed the familiar round 911 headlamps and replaced them with slim horizontal LED units.
The daytime running lights are integrated into the GT2 RS bumper intakes, giving the nose a low, wide expression that feels closer to a race car than a heritage exercise.
That design direction is fitting, because the car was styled by retired Porsche designer Grant Larson, who also created the 2018 Porsche 935 track car.
The result is recognisably 911 in proportion, but with a face that deliberately breaks from the model’s most enduring visual signature.
Aero influenced by Porsche’s modern competition cars
The bodywork is more than cosmetic theatre.
Porsche reworked the aerodynamic package with dual canards, a front splitter, NACA ducts on the hood and a substantial rear wing inspired by the 911 GT3 R Rennsport.
The claimed downforce figure is 1,221 lbs at 211 mph, which gives the project a level of functional seriousness that suits the GT2 RS underneath.
That balance is the car’s most interesting quality.
It references one of Porsche’s most dramatic racing silhouettes without turning the finished machine into a museum piece.
A stripped cabin keeps the focus on weight
Inside, the Flachbau RS is less theatrical than the exterior, but the changes are purposeful.
Porsche removed the touchscreen, carpets and sound insulation, while the standard leather seats were replaced by carbon-fibre bucket seats.
Those measures make the car 70 lbs lighter than the donor 911 GT2 RS.
It’s a relatively small number in isolation, but in a modern road-legal 911 with extensive custom bodywork, it underlines that this build wasn’t treated as a purely decorative commission.
Details & Specifications
| Brand | Porsche |
|---|---|
| Model | 911 GT2 RS Flachbau RS one-off |
| Base car | 991.2-generation 911 GT2 RS |
| Commission | Porsche Sonderwunsch for a US customer |
| Designer | Grant Larson |
| Engine | 3.8-liter twin-turbo flat-six |
| Transmission | 7-speed PDK |
| Driven wheels | Rear-wheel drive |
| Torque | 553 lb-ft |
| Downforce | 1,221 lbs at 211 mph |
| Weight change | 70 lbs lighter than the donor 911 GT2 RS |
| Key exterior changes | Slim LED headlights, integrated LED DRLs, dual canards, splitter, NACA hood ducts and large rear wing |
| Key interior changes | Touchscreen, carpets and sound insulation removed; carbon-fibre bucket seats fitted |
| Public appearance | Monterey Car Week |
The Flachbau RS is the sort of Sonderwunsch project that makes sense only when the client, designer and platform are all speaking the same language.
It’s not a gentle nod to Porsche history, but a road-legal GT2 RS with a more radical face, sharper aero and enough intent to feel worthy of the Slant Nose name.
