Genuine Honda left grip for the QA50, Z50 and CT70 models. Cut off your old grips, put some grip glue on the handlebar, and use a very small amount of soapy water on the inside of the grip to slide it on. Try not to stop half way because the grip glue cures quickly.
Honda Part Number: 53166-120-000
Fits Honda:
QA50K1 - 1973
QA50K2 - 1974
QA50K3 - 1975
Z50A Mini Trail 50 - 1976-1978
Z50AK3 Mini Trail 50 - 1972
Z50AK4 Mini Trail 50 - 1973
Z50AK5 Mini Trail 50 - 1974
Z50AK6 Mini Trail 50 - 1975
CT70K1 Trail 70 - 1972-1973
CT70K2 Trail 70 - 1973
CT70K3 Trail 70 - 1974