2021 Aprilia RS660 vs. Ducati Supersport 950S

It’s not surprising to see the Ducati makes more power and torque everywhere compared to the smaller Aprilia. What caught us by surprise is the flat spot we felt in the RS660’s midrange isn’t apparent on the dyno. The spike at around 7600 rpm, while noticeable on the dyno chart, wasn’t so apparent from the saddle. John writes, “the acceleration gap isn’t as big as you’d suspect between 660 and 937 cc. Seems like the RS would destroy anything its own size.”