Zero S is a naked bike motorcycle. On the performance side, it delivers. Top speed is factory-quoted at 108 km/h. On the road, the 2011 S tips the scales at 135 kg, offers a seat height of 832 mm and spans a 1410 mm wheelbase. That's roughly 70.9 kg lighter than the average naked bike motorcycle in our database. The full 2011 Zero S spec sheet below covers every technical detail, from suspension travel to tyre sizes.