It had sold 5,57,890 units in the same month last year, Hero MotoCorp said in a statement.
"The year has started well with record-breaking sales in both April and May. The demand momentum is thanks to the regular summer surge as also to the recent new launches from Hero. We have also undertaken several brand-building initiatives that have helped us achieve these record numbers," Hero MotoCorp Senior Vice President (Marketing and Sales) Anil Dua said.
The recent advertising campaign on Splendor iSmart has helped generate more awareness about our new i3S technology, leading us to further expand our capacity of the model. Going forward, with positive sentiment building up around the political and economic environment, we hope to sustain the current momentum, he added.
In May 2014, Hero MotoCorp crossed the landmark six lakh sales figure for the second time, representing second-highest monthly sales ever. The all-time high monthly sales of the company was recorded in the festival month of October last year when it sold 625,420 units of two-wheelers.