Suzuki GS650M Katana 1983. Suzuki XN85 650 Turbo 1983. Genuine Suzuki OEM Part. Exhaust Cam Shaft / Camshaft. This original OEM Suzuki exhaust Cam shaft is. NOS (New Old Stock). Item, in the original Suzuki packaging. The camshaft had some rust on one of the lobes when unwrapped which has subsequently been cleaned off revealing some minor rust pitting (see image No5). Motorcycle 1983 KATANA – GS650M. Motorcycle 1983 TURBO – XN85-D. 1981 (X) USA (E03). 1982 (Z) USA (E03). 1983 (D) USA (E03). 1981 (X) E01 E02 E04 E15 E16 E17 E18 E21 22 24 25 26 34. 1982 (Z) E01 E02 E04 E15 E16 E17 E18 E21 22 24 25 26 34. Thank you for looking.