The Specialized S-Works Demo is currently one of the most interesting and technically adept downhill bikes on the market. On our extremely stony and loose test track, it dropped the enduro model with a comfortable 10-second advantage (total time: 55 seconds). With its low geometry and sublime suspension, everything is ironed smooth. Forget worrying about which line to take, just grip the handlebars and give full gas. Alongside the significantly faster descent time, the security of knowing how well downhill bikes perform on steep and technical terrain is pretty astounding.