Radical SR4 chassis number 9 is a blue car that was originally equipped with a ZZR1200 engine. In 2019 Doug Knox purchased the car with a blown engine and is converting the car to use a 2014 CBR1000RR Fire blade engine. In June 2020 the car was located in the UK.  In April 2020 the car was located in the UK and is with a new owner and has been painted black.