2015B NASA RallyCross Challenge Season

The 2015B NASA RallyCross Challenge season will be the tenth season of the championship. Josh Mertz will return as the defending drivers' champion, as Revolution Racing will return as the defending Constructors' Champions.

Background
The biggest storyline of the 2015B season is longtime friends and rivals Josh Mertz and Dylan Livengood announced in the offseason that they would be coming together for 2015B. MRT and Revolution Racing will still compete, but their lead drivers will race for the new privately owned Aftershock Motorsports.

Calendar Changes

 * After nine seasons, Croft has been removed from the calendar. Valkenswaard will open the season.
 * Along with Croft, the NASA Proving Grounds have been removed after a single season reboot of the race.
 * NASA will experiment with a dirt figure eight track in a TBD location.
 * The newly renamed Area52 Designs Endurance Cup has returned.
 * Talladega, Bent Twig, Riverside, and Irwindale all return. Talladega was not featured at all in 2015A, along with Bent Twig. The latter two were cut when the season ended early.
 * Long Beach, while contracted for 2015A, is not featured in 2015B.

Team and Driver Changes

 * Josh Mertz and Dylan Livengood leave their respective teams of MRT and Revolution Racing to form their own team, Aftershock Motorsports.
 * Cody Erdmann left MRT to re-open Area 52 Racing.
 * Tanner Smith left Revolution Racing to partner up with the returning Brandon Lambert.
 * As a result, Dylan Smith left MRT to join Revolution Racing in Tanner's absence.
 * MRT subsequently signed Steve Rada and Tim Johnston.
 * Dunn LaPradd Incorporated becomes a Constructor team, with Dunn LaPradd and Brandon Nicholson driving.