Areyourshop 38mm/39mm/40mm 2PCS Cold Air Filter Pod Cleaner For KZ550 GS550 OEM Replacement Part Number:12-55739 FITMENT: UNIVERSAL fit for most motorcycle air filter with 38/39/40mm engine inlet For Honda CB750A Automatic 1976 For Honda CB750F Super Sport 1975-1976 For Honda CB750K 1969-1976 For Kawasaki KZ550A 1980-1983 For Kawasaki KZ550C LTD 1980-1983 For Kawasaki KZ550D/H GPZ 1981-1983 For Kawasaki KZ650B/F 1977-1980  For Suzuki GS550 1977-1979 For Suzuki GS550E 1977-1979 For Suzuki GS550L 1979 Size: Inside Diameter : 38mm-40mm (38mm ,39mm ,40mm) Filter Length: 70mm (2 3/4") filter length Outside Diameter at Widest Point: 2 1/2 inch Outside Diameter at Top: 2 inch PACKAGE INCLUED: 2x Air Filter (Comes with clamp,chrome end cap,as picture shown) Easy to install,no Installation Instructions.