The Radical SR9 is a sports prototype race car designed, developed and produced by Radical for sports car racing. It was built to LMP2 regulations and produced in 2006, marking the company’s move from track-day cars into international prototype racing.
Radical SR9 at a glance
| Maker | Radical Sportscars, Peterborough |
|---|---|
| Type | sports prototype race car |
| Class | LMP2 |
| Produced | 2006 |
| Purpose | sports car racing |
| Designed and developed by | Radical |
Based on one source, the English Wikipedia article on the SR9, which is very short; the article is correspondingly brief.
History of the Radical SR9
The SR9 was Radical’s entry into the LMP2 class of sports-prototype racing. Unlike the company’s open track cars, it was a closed prototype designed and developed in-house and built to the LMP2 regulations, and it was produced in 2006.

Cars of this type raced in the prototype classes at events such as the Petit Le Mans and appeared at the Goodwood Festival of Speed, where Radical’s prototypes have been shown alongside its road and track models.
Design and features
- LMP2 prototype: built to the regulations of the Le Mans prototype second class.
- Closed bodywork: a purpose-built sports prototype rather than an open track car.
- In-house design: designed, developed and produced by Radical itself.
Radical SR9 versions
- SR9: the 2006 LMP2 prototype in its original form.
The SR3 is Radical’s best-selling track car and the SR8 its fastest road-legal model. More cars are in the Radical collection.
Sources
- Radical SR9, English Wikipedia: class, production year, purpose