Champion's Treadblade

The Champion's Treadblade is the in-game version of the Alliance entry for the Azeroth Choppers competition, which did not win the vote held in June 2014. It was added to the game for gold, following fan outcry and "shady deals" in Stormwind's Old Town.

Source
This item is sold by Paulie in Stormwind City for.

Mount Journal
Forged by human, gnome, and dwarf, this armored masterpiece is designed to slice a tauren into a tri-tip dinner with a flick of the handlebars.