kick splines are 13.2mm on the out side /same as 50's and 70's are FITS THESE AND PROBABLY MORE CB100 A KICK STARTER CB100K1 A KICK STARTER SL100 A KICK STARTER SL100K1 A KICK STARTER CB100 A KICK STARTER CB100K1 A KICK STARTER SL100 A KICK STARTER SL100K1 A KICK STARTER SL125 A KICK STARTER CB100 A KICK STARTER CB100K1 A KICK STARTER SL100 A KICK STARTER SL100K1 A KICK STARTER SL125 A KICK STARTER CB100 A KICK STARTER CB100K1 A KICK STARTER SL100 A KICK STARTER SL100K1 A KICK STARTER SL125 A KICK STARTER 277K