ATHENA VALV.LAMELL.4 PETALI PIAGGIO

Athena racing valves, very high-end, vulcanized machined aluminum base base (addition of viton) to have a more airtight lamella joint plane and a smoother closure. The stop slats are drilled for better performance, the slats are in high-end 0.35mm karbonit epoxy fiber in order to obtain good performance and to erase the harmful vibrations of the intake.