Sophot Chuaihom, 32, was heading home when he became aware that he was being followed by two men on motorcycles. When he turned into the soi leading to the government housing project in Baan Lipon, they did the same.
Halfway along the soi they overtook him and forced him to stop.
When Mr Sophot removed his full-face helmet to see what the boys wanted, one of them grabbed it from him and beat him over the head with it. They then robbed the stunned hotel worker of his wallet, containing credit cards and cash.
Mr Sophot was sent to Mission Hospital for treatment. Thalang police are investigating.