The 400R is an engineering marvel delivering a 7,800 rpm red line, 330 lb/feet of torque and more than 400 hp. Its performance is legendary, and rest assured no detail of its interior has been overlooked either.
The 400R is no off-the-assembly line vehicle. It is your bespoke vehicle, designed to suit your preferences. Because it is a custom vehicle, it is unlike anything ever seen in a 993, quite literally.

Custom Gunther Werks carbon fiber-backed bucket seats are upholstered in the finest Alcantara and leather, in your color choice. Our performance seating combines comfort with the support to keep you safe and in control during the most rigorous track use. Seats are available with standard seat belts or optional racing harnesses.
The 400R’s doors, dashboard, center console, armrests, rear quarter panels and dashboard insert are upholstered in the same shade of Alcantara and leather as your seats. A matching headliner complements the rest of the car; options include deviated stitching, houndstooth fabric inserts and full leather.


The gauges on Gunther Werks’ 400R are arranged in classic five-gauge display with a central rev counter. All feature classic white markings on a black background, including a 200mph speedometer, but with the exception of the rev counter.

This has been highlighted in red, signifying its importance, and reads to 9,000 rpm with a 7,800-rpm red line.

All of the gauges are enclosed in machined billet aluminum rings, with six cutouts similar in fashion to an expensive timepiece.



In the pursuit of performance no stone is left unturned. To maximize weight savings, the front trunk is devoid of its carpet and space saving spare wheel. In its place is a carbon fiber trunk liner, concealed underneath is an optional LiteBlox Carbon Fiber battery weighing only 4.2lbs (1.9KG). The battery alone saves 33lbs (13KG)

The rear seats and carpet are removed, replaced with a carbon fiber rear seat delete stretching from the floor to the base of the rear window. This simple but elegant solution is custom made like every Gunther Werks part. Even the door handles are replaced with bespoke lightweight billet machined versions.



The billet aluminum ignition cover is machined with ten cutouts to match the gauges.

The ignition cover is the backdrop for the custom-designed key. With CNC-milled parts, the multi-piece key is assembled to aircraft standards and embodies the same level of craftsmanship as the car. The key is a showstopper on its own, even outside the car.



The 400R’s aluminum pedals and foot rest are bespoke items, as are the door handles, which are constructed of CNC-machined aluminum billets. Carbon fiber track mats are fitted and matched with carbon handbrake and rear trays.