Theon Design is marking its tenth anniversary with a bespoke Porsche 911 commission finished in Oak Green Neo Metallic over a warm leather cabin, with champagne accents connecting the two. Developed over 18 months with a British client, the 964-based coupe pairs a 419-bhp air-cooled flat-six with a five-speed manual and a chassis calibrated specifically for UK roads.
The reveal also brings broader news from the Oxfordshire company: a new online configurator, North American representation through Humble House and the first customer Theon R now in build. For this latest commission, however, the focus is on how the owner’s preferences shaped everything from the paintwork to the gearbox ratios and suspension settings.
OAK GREEN NEO WITH CHAMPAGNE DETAILS
Oak Green Neo Metallic provides an updated interpretation of Porsche’s familiar green, complemented here by champagne PORSCHE script, exterior detailing and matching 17-inch wheels. Even the Porsche 993 RS brake calipers carry the champagne finish.
Beneath the paint, carbon-fiber bodywork forms part of an extensive remaster that begins with stripping the donor 964 to its bare shell. Carbon also features in the bumpers, lower sill panels and interior trim. Theon quotes a completed weight of 1,150 kg, approximately 2,535 pounds.
The cabin combines semi-aniline and nubuck leather with champagne detailing, carrying the exterior’s accent color inside. Recaro CS seats provide support while retaining the comfort brief, and the familiar 964 dashboard architecture remains. Precision-milled aluminum window switches introduce a smaller tactile change to an otherwise recognizable cockpit.
SPECIFIED FOR BRITISH ROADS
The naturally aspirated 4.0-liter flat-six produces 419 bhp and 322 lb-ft of torque, driving the rear wheels through a five-speed G50 manual. The client selected that transmission in place of Theon’s more closely stacked, 993 RS-specification six-speed option, balancing back-road performance with more relaxed touring.
A drive-by-wire throttle enables selectable engine maps, including a dedicated town setting. Theon estimates approximately four seconds for the sprint to 60 mph.
The chassis follows the same brief. TracTive semi-active dampers work with bespoke spring rates and individually tuned steering, while the 17-inch wheels wear Michelin Pilot Sport tires with taller sidewalls to add compliance over uneven surfaces. The specification reflects a commissioning process concerned as much with how the car feels on its intended roads as how it looks parked.
MODERN COMFORT BENEATH A FAMILIAR SHAPE
The engineering changes extend beyond the powertrain and suspension. Fully electric heating and air conditioning replace the original heat-exchanger-based heating arrangement, providing warmth without waiting for the engine to reach operating temperature. Theon says the system also saves approximately 2–3 kg.
A lightweight MIL-specification wiring loom contributes a further claimed saving of approximately 25 kg compared with the original equipment. These less visible changes support the company’s approach to retaining the air-cooled 911’s character while updating its operation and usability.
A CONFIGURATOR, U.S. SUPPORT AND THEON R
Founded in 2016 by Adam Hawley and Lucinda Argy, Theon is opening its next decade with a new online configurator covering Coupe, Targa and R commissions. It allows prospective clients to explore colors, materials and specifications before developing their car directly with the team.
North American customers can now also work with Humble House for local support and a personalized concierge service. Meanwhile, the first customer Theon R is in build, with a planned 500-bhp-plus 4.0-liter flat-six and a target curb weight below 1,000 kg.
Theon Design Coupe commissions start at £435,000, excluding the donor car, shipping and local taxes. Each is individually developed with its owner, with a stated build time of 18 months.
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