Air Filter Motorcycle Scooter Pit Bike Quad Atv Racing Black Red Double Sponge. The description of this item has been automatically translated. RACING AIR FILTER Black/Red DOUBLE SPONGE. This filter consists of 2 separable sponges of different porosity, which guarantee a consistent passage of air and a high filtering effect. Carburettor inlet diameter: 38 mm. Sponge length: 70 mm. Total length (with inlet): 90 mm. Red sponge diameter: 74 mm. Black sponge diameter: 96 mm. Internal structure in steel. RACING AIR FILTER Black/Red DOUBLE SPONGE This filter consists of 2 separable sponges of different porosity, which guarantee a consistent passage of air and a high filtering effect. TECHNICAL DATA. Carburettor inlet diameter: 38 mm. Sponge length: 70 mm. Total length (with inlet): 90 mm. Red sponge diameter: 74 mm. Black sponge diameter: 96 mm. Internal structure in steel. Codice ricambio originale OE/OEM. Spugna Airbox Tondo Rotondo Double Layer Universale Carburatore. Mini GP Ovhale Go Kart Gd Tech GdTech. Lunghezza totale (con imbocco).