Question for the Harley owners

Question for the Harley owners

Morning all and first off a happy Easter to everyone

A quick question for the harley lads on here, a mate of mine had bought himself his first Harley(soft tail slim) but hasn’t ridden it yet as we are at sea at the moment so he’s waiting to get back to get it
What he’s wondering is that there is two pedals connected to the gearbox, like one forward and one at the rear of the box, any ideas what the rear one is for?
He’s coming from sportsbikes and I’ve never seen anything like it before
Any ideas?
Cheers

Source: Question for the Harley owners