Theon Design Ltd

Theon Design Ltd Official page for Theon Design
The Finest Bespoke, Enhanced Air-Cooled Porsche 911s

Theon Design are Porsche specialists who recreate, restore, source and sell the air cooled Porsche 911.

There’s so much engineering hidden beneath the surface – but we prefer not to hide all of it.Theon's 4.0-litre flat six ...
21/05/2026

There’s so much engineering hidden beneath the surface – but we prefer not to hide all of it.

Theon's 4.0-litre flat six engine combines modern engine management, lightweight materials, drive-by-wire control for an ultra-fast response and maximum driver feedback.

Green Hell or Cream Heaven?Theon cars are built to be used, as this 4.0-litre Coupé owner proved with a 3,000-mile Euro ...
19/05/2026

Green Hell or Cream Heaven?

Theon cars are built to be used, as this 4.0-litre Coupé owner proved with a 3,000-mile Euro trip including some hot laps of the Nürburgring.

Track days or touring... and definitely no garage queens.

Learn more here: theondesign.com

A Theon is shaped through thousands of small decisions.The important part is knowing which ones matter.
15/05/2026

A Theon is shaped through thousands of small decisions.

The important part is knowing which ones matter.

Most things are designed to be replaced. This isn’t one of them.
13/05/2026

Most things are designed to be replaced. This isn’t one of them.

Our customers' cars rarely sit still for long.They’re built to be driven and enjoyed properly, whether that’s regular sh...
11/05/2026

Our customers' cars rarely sit still for long.

They’re built to be driven and enjoyed properly, whether that’s regular short drives or long distance touring.

Usability is always part of our thinking.

Most of the development happens in the real world... on the road. That’s where you understand how the car really behaves...
08/05/2026

Most of the development happens in the real world... on the road. That’s where you understand how the car really behaves.

Each car is set up around its owner – from the way it responds to inputs, to how the engine delivers its power.

No two are the same, but all are resolved to look, feel and function right.

Learn more at theondesign.com

A Theon might look simple at a glance, but every single element has been worked through and considered.Find out more: ht...
06/05/2026

A Theon might look simple at a glance, but every single element has been worked through and considered.

Find out more: https://theondesign.com/

Theon interiors are developed with a level of care that naturally takes time.We consider not just how it looks on day on...
04/05/2026

Theon interiors are developed with a level of care that naturally takes time.

We consider not just how it looks on day one, but also how it’ll feel after years behind the wheel.

Material, colour and finish – everything has to work together in a cohesive manner.

Each Theon commission is subjected to a thorough development period, ensuring everything is calibrated and set up correc...
01/05/2026

Each Theon commission is subjected to a thorough development period, ensuring everything is calibrated and set up correctly for its new home.

While most of this work is done on public roads, nothing replaces time spent on track to fully explore its dynamic range.

The aim isn’t outright performance, but clarity – a car that feels settled, responsive, and intuitive in every s

Discover more about the work we do and models we offer here: https://theondesign.com/

The ever-popular Pastel Blue Targa commission was in its element at last Sunday’s sunny Bicester Scramble. Discover more...
29/04/2026

The ever-popular Pastel Blue Targa commission was in its element at last Sunday’s sunny Bicester Scramble.

Discover more about the work we do and models we offer here: https://theondesign.com/

We proudly displayed our latest 4.0-litre creation on the Top Gear stand, finished in Crayon Grey with Lizard Green acce...
27/04/2026

We proudly displayed our latest 4.0-litre creation on the Top Gear stand, finished in Crayon Grey with Lizard Green accents to our client's specification.
It was great to get out and about amongst fellow enthusiasts to discuss our latest model and the brand overall.
Think the little doggo fell head over heels for it...

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Buckingham Road
Bicester
OX27 8AL

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