Twin-Air dual-stage filters are used by factory race teams and leading riders around the world Dual-bonded foam design removes even microscopic dirt
particles, yet allows more air flow than regular two separate layer filters (flow bench tested)

The best air filter for your Fiddy/Midsize,
Size of neck 50mm, length 50mm.
Also fits Bucci, YCF, Pitsterpro and many more models.