The Asian Games gold-medallist, who was experiencing discomfort in his left hand wrist after the semifinal bout, decided to forfeit the summit clash against Qiong Maimaitituersun.
Maimaitituersun was a bronze medal winner at the Asian Games last year.
The 19-year-old Vikas, who won a bronze medal at the World Championships last month, had advanced to the last round after beating Azerbaijan`s Ismet Eynullayev in the round of four (9-6).
Vikas, among the four Indian boxers to have qualified for the Olympics next year, sustained a blow to his left wrist while taking guard during the semifinal bout, which became the cause of the niggle.
The onsite doctor advised him against competing in the final bout. A complete diagnosis will be done by the team doctor followed by an X-ray and MRI after his arrival in the country tomorrow.
Earlier in the tournament, Asian Games silver-medallist Dinesh Kumar (81kg) had to settle for a bronze after losing his semifinal bout against Yamaguchi Florentino of Brazil.
In the women`s event, five-time world champion MC Mary Kom made an early exit after losing to Argentine Pamela Paoloa Benavidez in the 51kg quarterfinals.
Pooja Rani (75kg) and Commonwealth Games bronze-medallist Amandeep Singh, in men`s 49kg, suffered a similar fate in their respective quarterfinal bouts.