Ready to fit Carbon Fibre air box system allowing the maximum volume of air to be fed to the Hayabusa engine in a Caterham 7. This does require you to make a neat bonnet cut out and rubber edge trim for the bonnet hole. The kit contains; trimmed and bonded Hockenheim 422 air box, with 2 off 75mm oval angled intakes and 20mm deep moulded backplate for you to drill (or we can drill if you provide dimensions). For best cold ram air performance you might like to purchase and modify a Caterham 620 nose cone. Use our internal foam filter, trumpet socks or a remote filter system.