If you mountain bike, eventually you're going to try downhilling. And you're not going to do it just once. Most downhill areas let you rent all the gear you'll need, but do you really want to strap on a helmet that's already absorbed a season's worth of sweat from other riders? Giro's new Cipher makes it possible for you to afford your own full-featured full-face helmet. The brow-vented lightweight fiberglass shell is lined with protective padding containing vinyl nitrile for extra impact absorption on the jaw line. Built in speaker pockets play your personal soundtrack to awesomeness, while an integrated P.O.V. mount lets you capture your big airs. [$200; giro.com]