How many cc engine does the Honda Activa 125 have?

As is very evident by the name, the Honda Activa 125 comes with a 125 cc engine. However, due to BS-VI compliance, the top speed has been fine-tuned a bit, and the engine capacity is lowered to 124 cc. This fan-could PGM-Fi, 1 cylinder engine, can produce a top torque of 10.3 Nm @ 5000 RPM and a maximum power of 8.1 bhp @ 6500 rpm.