This is a complete set of wheels (2 drive wheels, 2 idler wheels) with two matched tracks. You need 1 of these for the LT2 or LT2-F. These generation 3 tracks are a more aggressive pattern than the standard LT2 tracks.
The DX9 Black Edition gives you the same incredible features and user-friendly ergonomics of the original DX9 but adds a stunning black finish along with a Black Edition transmitter case. This part includes the fail Safe AR9020 9-Channel Receiver too!