Sneakster

The Sneakster (known as Nitrocycle in the PAL region) is a medium-sized bike in Mario Kart Wii. It looks similar to a stretched-out old Harley. The character's emblem is located at the very back of the bike. It can be unlocked by getting at least a one-star rank on all 100cc Wii Grand Prix cups. Its kart counterpart is the Sprinter. In addition, it is also similar to the Spear, in which both are the fastest bike in their respective classes. Its engine sound is actually that of the DS Standard Kart, thus hinting this bike is a two stroker.

Stats
The Sneakster is the fastest medium bike in the game, tying with the Flame Flyer, a heavyweight kart. It also has average weight and drift, but is actually the second heaviest medium bike in the game. Its other stats are quite low and its acceleration is equivalent to that of the Shooting Star.

Color schemes

 * Mario – Red with black tires
 * Luigi – Dark-green with dark blue tires
 * Peach – Pink body and dark pink tires
 * Daisy – Orange with green tires
 * Yoshi – Light-green with dark-blue tires
 * Birdo – Magenta with dark magenta tires
 * Diddy Kong – Red with orange tires
 * Bowser Jr. – Yellow with dark-orange tires
 * Male Mii – Gray with red tires
 * Female Mii – Light-blue with dark-blue tires

Trading Card info
"If you take a look at the Sneakster's stats you'll notice one thing: awesome top Speed. It's one of the fastest in the game. Naturally, that Speed comes at a high cost, as all other categories have far lower stats..."

Trivia

 * Diddy Kong drove this bike for the first August 2008 tournament, as well as the second December 2009 tournament.
 * In Mario Kart 8, a bike called the "Comet" is similar to the Sneakster. It's also an inside-drifting bike.