Not only the fastest in the wind-tunnel or just the fastest for a select few riders in a select few scenarios, but the fastest for anyone interested in going faster, just about everywhere you’d want to go faster.
It's faster than lightweight climbing bikes on any climb up to a 6% gradient or more, depending on rider's power to weight. To put that in perspective, most revered HC climbs in the Tour only average 7-8%.
Of all the forces you have to overcome to make speed, aerodynamic drag has more of an effect in most situations than all the other resistive forces combined. Cutting drag translates into more speed, with less effort, in all the places you’d expect. And a lot of places you wouldn’t.
Dropping down a 5% grade, a rider on a traditional lightweight bike would need to put out over 300 watts just to keep up with a rider spinning at a recovery effort on a SystemSix.
In a 200m sprint with riders putting out a 1000-watt effort, the SystemSix rider would be four bike lengths ahead at the line.
At 48km/h (30mph), SystemSix saves you over 50 watts - huge savings considering an average Cat 1 racer's Functional Threshold Power is around 350 watts. And even when drafting, you're still getting up to 60% of that benefit.