 Custer led every single lap, but was turned by Gray Gaulding on the final lap, and finished sixth.In the 2014 season, Custer won the Pro Series West opener at Phoenix International Raceway, holding off Greg Pursley and Brennan Newberry on the green–white–checker finish.In 2014, Custer joined Haas Racing Development to run nine races in the NASCAR Camping World Truck Series, making his debut in the Kroger 250 at Martinsville Speedway.