Remote air filter system based on the bgm PRO intake hose and a Marchald foam air filter. The intake hose is available with four different connection sizes at the carburettor: 40 mm (e.g. Dellorto PHBL 25), 42 mm (Dellorto PHBH 28-30), 45 mm (Mikuni TM24 and Jetex SH22) or 50 mm (Keihin PWK 28, Polini 28 - 30).
