Gunther Werks Unveils 455-hp GXR-Evo, Limiting 993-Based Track Car to 15 Units

Q: Why did Gunther Werks completely remove the rear window for a radical shark fin on their newest 911 restomod?

Gunther Werks removed the GXR-EVO’s rear window to make room for a Le Mans-style shark fin that supports the car’s extreme aerodynamic package and improves high-speed stability. The company’s new 911 restomod is built as a track-focused, road-legal machine, and its giant high-downforce rear wing required a more radical rear-body solution than a normal coupe layout allows. Multiple reports on the launch say the glass was replaced by a vertical stabilizer specifically to help stabilize the car at speed and work with the wing and rear aero elements. That change reflects the GXR-EVO’s overall mission. Gunther Werks revised the entire carbon-fiber body around downforce, cooling, and weight reduction, adding a new splitter, dive planes, vented fenders, diffuser, and engine intakes in the rear quarter windows. Replacing the rear window also fits the car’s broader push to save mass; the company says the GXR-EVO is 210 pounds lighter than its regular Coupe models, at a 2,386-pound dry weight. The tradeoff is obvious: rear visibility is largely lost. Gunther Werks addresses that by fitting an electronic rearview mirror inside the stripped-out, motorsport-style cabin. In short, the rear glass was deleted not as a styling stunt, but because Gunther Werks prioritized aerodynamic stability, wing integration, and track performance over conventional road-car practicality.

3 articles · Updated · Car and Driver · Aug 14

Gunther Werks revealed the GXR-Evo as its fastest naturally aspirated model yet—a 993-based track car with 455 hp, a six-speed manual and a 2,386-pound curb weight.
Carbon fiber drives much of the 210-pound reduction versus the standard Coupe, while a large splitter, dive planes, fender vents, rear diffuser and towering wing sharpen track-focused aerodynamics.
Rothsport Racing helped develop the 4.0-liter flat-six, which revs to nearly 9,000 rpm; the chassis adds unequal-length front control arms, three-way adjustable dampers and Brembo Pista race brakes.
Only 15 cars will be built, and each buyer gets a bespoke racing simulator, underscoring Gunther Werks' push into the booming niche for analog, limited-run supercars.