THIS CARB WILL BOLT RIGHT ON THE 86 TO 99 Z50'S. BUT IF YOU CAN STILL USE YOUR OLD TOPSET (THE PART THAT SCREWS ON TOP) THIS WILL ALSO WORK ON THE 1976 Z50A THRU 1985 Z50R. @ *CARB (CRF50_06_TO_07) CAN_WORK_ON (Z50_76_TO_99) 32MM_PATTERN 7/21A (60A) 60A @ 6MM X 35MM CHROME FLANGE BOLT 6MM X 35MM CHROME @ *TOP_SET_FITS LOTS_OF_UNITS SEE_DISCRIPTION 16014-GB1-912 discontinuedREAD BELOW FOR FITMENT!!!! Z50R ALL XR50 ALL CT70 K0 THRU 1977* CT90* not for k2 and k3 models TRX90* FOR CUSTOM CABLES CT200 ALL CM91 ALL ST90 ALL ATC90 ALL ATC70 73 & 74 *SOME EARLY MODELS HAVE A TALLER SLIDE AND UNLESS YOU REMOVE THE TOP 1/8" OR SO OF THE SLIDE PISTON YOU MAY NOT BE ABLE TO GO FULL THROTTLE. click to see bigger diagram NO LONGER AVAILABLE FROM DRATV @ *MAIN_JETS 1982_to_2011 Z50R_XR50_CRF50 LARGER_SIZES 1/22A (201B) (201C) (250W) temp @ *CARB PACKING SET Z50 "79" TO "99" ALL_XR50_&_CRF50 16010-181-305 1/22M (73M) 73M @ *CHAMBER SET, FLOAT FITS 1988 TO 2016 Z50R XR50R CRF50F 16015-099-691 (Y3023)Honda Motorcycle 2015 CRF50F AC - CRF50F Carburetor Honda Motorcycle 2004 CRF50F A Carburetor Honda Motorcycle 2006 CRF50F A Carburetor Honda Motorcycle 2012 CRF50F AC - CRF50F Carburetor Honda Motorcycle 2000 XR50R A Carburetor Honda Motorcycle 2002 XR50R A Carburetor Honda Motorcycle 1994 Z50R A Carburetor Honda Motorcycle 1998 Z50R A Carburetor Honda Motorcycle 1999 Z50R A Carburetor Honda Motorcycle 2021 CRF50F - CRF50F Carburetor Honda Motorcycle 1991 Z50R A Carburetor Honda Motorcycle 1993 Z50R A Carburetor Honda Motorcycle 2020 CRF50F Carburetor Honda Motorcycle 2018 CRF50F A Carburetor Honda Motorcycle 2005 CRF50F A Carburetor Honda Motorcycle 2001 XR50R A Carburetor Honda Motorcycle 2008 CRF50F A Carburetor Honda Motorcycle 2009 CRF50F A Carburetor Honda Motorcycle 2019 CRF50F AC Carburetor Honda Motorcycle 1996 Z50R A Carburetor Honda Motorcycle 1989 Z50R A Carburetor Honda Motorcycle 1995 Z50R A Carburetor Honda Motorcycle 1997 Z50R A Carburetor Honda Motorcycle 2003 XR50R A Carburetor Honda Motorcycle 1992 Z50R A Carburetor Honda Motorcycle 1988 Z50R A Carburetor Honda Motorcycle 2014 CRF50F AC - CRF50F Carburetor Honda Motorcycle 2011 CRF50F A Carburetor Honda Motorcycle 2018 CRF50F AC Carburetor Honda Motorcycle 2007 CRF50F A Carburetor Honda Motorcycle 2013 CRF50F AC - CRF50F Carburetor Honda Motorcycle 2016 CRF50F AC Carburetor Y3023