Here Mario shows his hang time as his backside hangs out over his seat.
Another Mario butt shot as the Mustachioed Plumber takes a leap of faith over the toadstool tops on Mushroom Gorge.
Princess Toadstool gets on her racing tights to show off her butt while she rides the motorbike in this screenshot below
A couple of fan art pictures below show greater detail as Rosalina and Peach get ready to do some racing.
Peach is ready to go for a spin on her crotch rocket.