Terraphone Replacement foam microphone cover for the open face headsets. These foam pieces help keep the microphone clean and a better distance from your mouth. They also reduce wind noise from the air as you speed along, but also from your voice as you communicate with your driver. Occasionally a freshen up is advised, it's thought these foam sponges are likely to be a common place for bugs to linger!
Simple slide on fitment held in place with glue or tape
Genuine replacement parts from Terratrip for the booms
Always keep a spare in case you tear one by accident