Radical racing enters its seventh season at Donington Park on Saturday, with big grids for the Biduro and Enduro series. Twelve new SR4 chassis will take on 12 proven Clubsports for the first time in Biduros.

Adrian Mardlin, Mick Mercer, Alex Mortimer, former Superkart ace Chris Stoney and Duncan Williams among those who will run SR4s.

The twin 100km race format of the Enduro series brings out the higher downforce 250bhp chargers. Reigning co-champion Nigel Greensall is teamed with Lawrence Tomlinson in an SR3, while his 2003 partner Jonathan Coleman will share his Prosport with Simon Phillips.

How safe is a Radical?

Following the accident in this video clip, both drivers were completely unhurt, and both were out for the second race, one hour later!

The camera car simply required a new front crash box and splitter, with some tank tape on the bonnet.

The yellow car need a swift repair to its front bodywork and damaged front undertray.

All Radicals are constructed from a high tensile steel spaceframe which incorporates an integral safety cage which will support 13-times the car’s own weight.

A high-strength footwell structure will absorb nearly 20-times the cars weight before distorting and incorporates an adjustable pedal box behind the front wheel centre line.

The roll over bars comply with the latest MSA and SCCA specifications and all cars come with deformable side pods and an optional front crash box. “Maximum fun with maximum safety” is our motto.