Shares in Hero MotoCorp fall 1.5 percent on worries the two-wheeler maker will have to cut production after posting a 11.9 percent fall in sales in August.
Sales of motorcycles in India fell 8.5 percent last month from a year ago, according to the report on Monday from Society of Indian Automobile Manufacturers.
Hero MotoCorp has reduced production due to the slowdown in demand, its managing director said last week, although he did not provide figures.