The request
The flat nose is one of the few Porsche design ideas that started as a race car necessity, became an option on the road cars, and then disappeared for decades. A customer asked whether the factory would build another one. The factory agreed.
The result is the Flachbau RS, published on August 14, 2026. It is a Sonderwunsch commission, which is Porsche's own personalisation department rather than an outside shop, and it was carried out with Manthey. It is not a new model and it is not a series. It is one car, built from a 911 GT2 RS the customer already owned.
A slantnose from anyone else is a body kit. A slantnose from the department that invented it, on a GT2 RS, is something else entirely.
What was actually changed
The nose is the headline, and it is a structural change rather than a cosmetic one. New wheel arches, a new headlight system, and a U-shaped graphic across the bonnet that references the 935/78, the car everybody knows as Moby Dick.
The rear is where the engineering went. The wing sits about five centimetres higher than the GT2 RS item and fixes in three positions. Porsche has patent protection on its adjustment markings, which is an unusual detail to bother with on a single car.
| Base car | Customer's own 911 GT2 RS |
| Built by | Sonderwunsch, with Manthey |
| Rear downforce | 554 kg, High Downforce setting at 340 km/h |
| Weight saved | 31.6 kg |
| Wing positions | Three |
| Paint | Grand Prix White |
| Road legal | Yes |
The 554 kg figure is the one worth sitting with. That is downforce on the rear axle alone, in the most aggressive of the three wing settings, at 340 km/h. Lightweight work elsewhere takes 31.6 kg out of the car.
What Porsche has not said
There is no published output figure for the Flachbau RS. The 700 PS number that has been attached to it in places belongs to a historic 935 clubsport and not to this car. Porsche has not stated whether the engine was touched at all, so we are not going to guess at it.
Porsche has also not named the owner, and has not put a price on the work. Neither is unusual for Sonderwunsch.
Why it matters
Sonderwunsch has spent the past few years proving it will do more than choose a paint code, and the Flachbau RS is the clearest evidence yet. Reprofiling the front of a GT2 RS, revalidating the aerodynamics, and delivering the result road legal is a long way from a bespoke interior.
It is one car. But it establishes that the answer is not automatically no.
Sources: In the footsteps of Moby Dick: an extraordinary one-off slantnose model (Porsche Newsroom, August 14, 2026); Monterey Car Week 2026: Porsche presents exclusive premieres and highlights (Porsche Newsroom USA). Photography: Porsche.