His two sons, Rajiv Bajaj and Sanjiv Bajaj, would get the additional responsibility in the company.
"I will continue to be the chairman of the company as long as the board wants me," Rahul Bajaj said.
Rajiv Bajaj would be elevated to the post of managing director handling entire operations including production, marketing, supply chain, manufacturing and production engineering.
Sanjiv Bajaj would head the international marketing and other functions like finance, treasury, costing, secretarial, legal and corporate governance.
Currently, Rajiv Bajaj is the joint managing director of Bajaj Auto.