Willow Springs II is a raceday event featured in Need for Speed: ProStreet. The event takes place at Willow Springs and is hosted by the Battle Machine organisation. The raceday is unlocked upon Ryan Cooper dominating Battle Machine's Chicago Airfield event. The raceday allows all participants to drive any vehicle of their choosing but a Grip and Drag vehicle is required for entry. A backup car may also be chosen but will be restricted to a single class. Completing a race at this raceday event will award $600 for a 3rd place finish, $900 for a 2nd place finish and $1,500 for a 1st place finish.