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. 71K$23.99 *RUBBER FOR CARB TOP/SET (31D) THIS RUBBER WORKS FOR Z50's K0 THRU K6 AND CT70's KO THRU 77. IT WILL WORK ON THE CARB WE SELL FOR Z50A'S IT WILL ALSO WORK ON OUR 71K TOPSET 31D$6.50