Seriously?
a seat bump on a 125?
HA HA HA HA!!
it is obviously a scoop out of the foam to lower the seat hieght, but at first glance i spit my coffee on the key board laughing.
It really is a nice bike, let us know how that CArbon fiber clutch cover holds oil, I hear they warp when the get hot and leak.
And welcome to the forum.