Product Description This is a 17 Tooth Unit. Some might have an 18 Tooth. For 18 tooth Unit check eBay number 282733673660 Kazuma Meerkat Falcon Redcat MPX 50cc, 70cc, 90cc, 110cc Semi-Automatic ATV Clutch. Gas Tanks Caps. Kazuma Meerkat 50 ATV. Kazuma Falcon 90 Mini ATV. NEW ATV Starter Motor 90cc 110cc Quad Kazuma Chinese. ATV CLUTCH ASSEMBLY SEMI AUTOMATIC ONLY 70cc 110cc 125cc CHINESE ATV 17 TEETH Heavy Duty Clutch Assembly, semi-automatic clutch kit for Honda style, 4-Stroke engines found on Chinese Dirt bikes, ATV’s, super pocket bikes, mini-choppers and dune buggies. Specifications: Semi automatic clutch. 4-1/2″ diameter. 17 tooth May fit the following Models: ATC70, ATC 70, ATC-70, 70cc 3 Wheel ATV, 1973 – 1985 C70, C 70, C-70, Passport 70cc Scooter, 1972 and 1980 – 1983 CRF50, CRF 50, CRF-50, CRF50F, CRF50-F, 2004 – 2008 CT70, CT 70, CT-70, Trail 70, 1972 – 1984 (NOT for CT70H, for other years, please see our eBay store) TRX70, TRX 70, TRX-70, ATV, 1986 – 1987 XR50, XR