Hiflofiltro air filters are manufactured to fit the factory air box and are a direct replacement for original equipment filters.
Fits:
Honda CB350 SG,SJ 1986 to 1989,
Honda CB400 F2N Super Four (Japan) (NC31) — Japan ,
Honda CB400 Super Four (Japan) (NC31) — Japan ,
Honda CB450 SG (27 PS) (PC17) 1986 to 1988,
Honda CB450 SG (44 PS) (PC17) 1986 to 1988,
Honda CX 500 CB Custom 1981 to 1984,
Honda CX 500 EC Eurosport (PC06) 1982 to 1984,
Honda CX 500 Z,A,B 1978 to 1984,
Honda CX400 EC 1982 to 1984,
Honda GL500 I Interstate 1981 to 1982,
Honda GL500 Silver Wing (PC02) 1981 to 1982