Features: 1.Fitment: Fit for CB350 SG, SJ 1986?1989; Fit for CX 500 Z, A, B 1978?1984; Fit for CB400 Super Four (Japan) NC31 Japan; Fit for GL500 Silver Wing PC02 1981?1982, etc. 2.High Filtration Efficiency: Air filter is used to filter out harmful particles in the inhaled air, such as dust, pollen, sand, soot and even water droplets. 3.Stable Performance: The air filter is installed in front of the carb or intake pipe to ensure sufficient and clean air in the cylinder and improve engine performance. 4.Strong Protection: The air filter can protect the engine, prevent the engine important parts from being worn out and prolong the service life. 5.Premium Material: Made of upgraded aluminium alloy material, air cleaner is shock proof, antirust, can be used in acid, alkali and humid environments Specification: Item Type: Motorcycle Air Filter Material: Aluminium alloy Fitment: Fit for CB350 SG, SJ 1986-1989 Fit for CX 500 Z, A, B 1978-1984 Fit for CB400 Super Four (Japan) NC31Japan Fit for CX 500 CB Custom 1981-1984 Fit for CB400 F2N Super Four (Japan) NC31 Japan CX 500 EC Eurosport PC06 1982-1984 Fit for CX400EC 1982-1984 Fit for GL500 Silver Wing PC02 1981-1982 Fit for CB450 SG (27 PS) PC17 1986-1988 Fit for GL500 Interstate 1981-1982 Fit for CB450 SG (44 PS) PC17 1986-1988