Maidenhead & Windsor

ADR, based in Maidenhead, manufacturing 2 seat racing cars for competetive circuits around the world. ADR has its roots in a Maidenhead engineering business founded in the early 1950's supplying Motorsport and non-motorsport companies with specialised, bespoke components.

However it was not until 2001 that we produced the prototype of our first complete racing car, the Maidenhead ADR1000. This car was powered by the 1000cc BMW.

Sports 1000: When it was first shown it created a huge demand and ADR went into production of these for the newly created Maidenhead Sports 1000 series started by the 750 motor club.

Sport 2: Success with these cars led to the design and build of the next car from the ADR marque, the Maidenhead Sport 2. These were the first 2 seater sports prototype cars and had several engine options - the quickest being the 1300cc Suzuki Hayabusa unit.

ADR3: We had hardly gone into production of the Sport 2 when interest from partners in both the USA and France caused us to raise the bar higher. The burgeoning C-Sport category in America led us to design an evolution of the Sport 2 which would have FIA and SCCA approval and bring options to drivers around the world to compete in endurance, sprint, bike-engines or automotive power. This car is the Maidenhead ADR3.

ADR3: The Maidenhead ADR3 comes with 2 engine/drivetrain options; the Suzuki Hayabusa 1.3L or the Honda 2 litre K20 mated to the Hewland FTR gearbox.

ADR Engineering ~ Maidenhead