The Riders of Doom expansion for RedLynx's Trials Evolution will be released tomorrow, Wednesday, Dec. 19 on Xbox Live, bringing 40 new tracks, one new motorcycle and a slew of other features to the wildly popular stunt racer-platformer.

In a newly released launch trailer for Riders of Doom, the second downloadable add-on for Trials Evolution, we're given a longer, more detailed look at the new apocalypse-inspired levels, which are broken down into 20 new Trials tracks, 10 all-new Skill Games, five Supercross tracks and five brand-new Tournaments.

According to PlayXBLA, the new motorcycle, the Banshee, "combines the speed of the Scorpion with the handling of the Phoenix, forging the perfect blend of speed and agility."

Riders of Doom will cost 400 Microsoft Points from Xbox Live Marketplace.