Some 125cc shifter data from my last autocross that had a “drag” start. I suspect others can and have done much better…. I’m new to shifters, and haven’t really done much tuning yet.
– 0-50mph (speed before we lifted for first corner) @ launch: 2.7s
– 60ft times: 1.7s @ 43mph
Based on that 0-60 in 3.5s seems very doable. No idea what top speed is, since I’ve always run out of straightaway long before I was starting to feel any aero drag.