It firms it up, makes it heavier…tighter….many ways to describe it but switching between normal and sport on the highway it’s easy to feel the difference.
You can have a laugh
I bought the ST for my wife to replace her 13 year old edge.
She didn't know about sport mode until a month or so ago
Mind you...to her the throttle is more like an on or off switch...all or nothing
She never really modulated application of the go pedal..
In the ST She is learning...application of go pedal is a smooth application vice , the way the edge was.
205 hp vs. The insane 3.0 hp
Now she comments regularly..she has to be easier on the go pedal to not go too fast to soon
I showed her sport and the other modes ,
My intent was the slippery mode for our impending winter weirdness.
She drove in sport a few miles.....
I created a monster