The Bell rear spoiler is suitable for the Bell HP7, RS7, HP5, GT5 Sport and KC7-CMR helmets. The spoiler attaches to your helmet using strong double sided adhesive meaning it will stay on once applied. It has been designed to help F1 and open wheel racing drivers by improving the overall aerodynamic performance of your helmet, whilst at the same time increasing its stability.
The Medium 43.5mm and Large 49mm also fit GP3 model helmets