- Two-cylinder Aprilia RXV 550 engine, weighing 32 kg
- Steel space frame, externally fabricated with stressed skin construction
IC05
- Powered by two single cylinder go-kart engines with a combined weight of 28 kg; over 30 kg lighter than a standard 4-cylinder engine
- Full length carbon-fibre monocoque
IC04
- Powered by the same engine as IC03, now developing 95bhp
- Welded steel space frame and stressed engine member.
- Unfortunately did not race as it was superseded by IC05
IC03
- Powered by a new Suzuki GSX-R 600 K5 engine
- Carbon-fibre monocoque with steel rear space frame
IC02
- Powered by the same engine as IC01, now developing 88 bhp
- Carbon-fibre monocoque
- 1st in Class 2 in 2004
- 17th overall out of 80 in Class 1 in 2005, 4th best in the UK
- fastest UK Sprint time
- 3rd fastest Endurance time
IC01
- Powered by a Yamaha YZF600 motorcycle, developing 80 bhp
- Carbon-fibre monocoque
- 1st in Class 2 in 2001
- 22nd overall in Class 1 in 2003
