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F26

Technical Specifications

Revolutionary Power Precision

The GWR features a state-of-the-art naturally aspirated engine, the Quad Cam Twin Valve Flat-Six 4.0L, developed by GW/Rothsport. This engine is engineered to achieve a maximum rotational speed of 9,000 rpm, producing over 500 horsepower and 340 lb-ft of torque. The vehicle's total weight is maintained at 2,400 pounds, thanks in part to its lightweight carbon fiber body. This results in an outstanding power-to-weight ratio of 4.8 lbs per horsepower, representing a 25% enhancement in power-to-weight efficiency compared to the original PorscheĀ® air-cooled 993, as re-envisioned by Gunther Werks.

1,000
bhp+
4.0 Liter, 750 ft lb Torque

Drivetrain

> Engine: Twin-turbocharged 4.0L flat six engine co-developed by Rothsport Racing
> Maximum Horsepower: 1,000 horsepower @ 7600 RPM
> Maximum Torque: 750 lb-ft of torque @ 5600RPM
> Transmission: Six-speed manual
> Drive Configuration: Rear-wheel drive, limited-slip differential
> Exhaust: 935-style exhaust with external wastegates
> Fuel System: High-octane fueling with adaptive fuel mapping and ethanol capability
> Cooling System: Air Cooled motor with a water-to-air intercooler with flat fan engine cooling
> Lubrication System: Dry sump

Chassis

> Front Suspension Type: Double wishbone with adjustable anti dive and JRZ electronic
> Rear Suspension Type: Multilink with full custom suspension arms mated to a JRZ electronic
> Steering Type: Hydraulically-assisted rack-and-pinion
> Anti-roll Bars: Front and rear
> Chassis/Body Construction:
- 993 steel chassis with added bracing for a 200% increase in rigidity
- Carbon-fiber body panels
- Carbon-fiber doors
> Front and Rear Brakes: 381mm Front and 355mm rear CCMR Rotors with 6 piston Front GT-R calipers and 4 piston Rear GT-R calipers
> Vehicle Curb Weight: 2,750 lbs

Wheels and Tires

> Front Wheels: 18x11 Turbo Twist Magnesium Monoblock
> Rear Wheels: 18x13 Turbo Twist Magnesium Monoblock
> Front Tires: Continental ExtremeContact Force 295/30/R18
> Rear Tires: Continental ExtremeContact Force 335/30/R18

Interior

> Steering Wheel:
- New steering wheel design inspired by the profile of a fighter jet’s wing angle
- Carbon-fiber wheel rim with aluminum components
- Designed, manufactured and assembled in-house
> Seating Material: Leather
> Instrument Cluster: Gauge rings plated in a satin stealth finish
> Headliner Material: Alcantara
> Audio System: Porsche Classic radio with Apple CarPlay
> Shift Knob: Wooden top with design inspired by Porsche’s racing heritage.
> Interior Carbon-Fiber Components Painted Body Color: Travel Package tunnel, five-piece flooring and mid-dash
> Roll Cage in Carmine Red

Exterior

> Lighting System:
- Tinted LED Sabre taillights
- 3 light projectors per side with integrated high beams with aluminum trim components and LED running light bezel
> Trim Details:
- Exposed carbon fiber: Engine shroud, interior waterfall, front spoiler and rear diffuser
> Aerodynamics:
- Carbon-fiber front and rear diffusers
- New high-downforce rear wing taking inspiration from the Porsche 935 design
- New front quarter panels designed for minimal drag
- Rear quarter panels with a squared-off design inspired by the Porsche 935 and incorporated with engine intake ducting
- Inspired by the 935 ā€œdouble wingā€ a new carbon fiber high downforce wing design

Ā© 2025 Gunther Werks. All Rights Reserved. Gunther Werks’ services are provided solely by Gunther Werks, that they are not sponsored, associated, approved, endorsed nor, in any way, affiliated with PorscheĀ® Cars North America, Inc., or Dr. Ing. h.c.F. PorscheĀ®, AG. The PorscheĀ® name and crest, 993Ā® and 911Ā® are trademarks of Dr. Ing. h.c.F. PorscheĀ® AG, and any other products mentioned are the trademarks of their respective holders. Any mention of trademarked names or other marks is for purpose of reference only.

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