Vince Castellanos for EXPN.com

You know about Winter X SnoCross, right? Of course you do. Dudes in body armor atop 450-pound snowmobiles fighting other sledheads on a half-mile course filled with huge holes and the biggest air of any X sport. It’s the outdoor motocross of the snow scene. Introduced to Winter X in 1998, SnoCross was the first motorized sport at either X or WX (Freestyle Moto X was not introduced to summer X until 1999), and the machines certainly don’t lack impressive stats. With around 175 horsepower, SnoCross snowmobiles can go from 0 to 70 mph in less than 4 seconds. Wow. Those kinds of numbers will rev any speed freak’s motor. Although capable of topping 110, SnoCross sleds rarely hit 55 because tight, twisty courses place a premium on driver skill and quick bursts of power instead of high speed. (more…)