READ 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. NO LONGER AVAILABLE FROM DRATV @ HIGHER QUALITY AFTERMARKET TOPSET ALLOWS AFTERMARKET THROTTLE CABLES FITS TRX90_ALL CT90_1978_TO_79 (223C) 223C