Firewire LEDs was at the 2021 UCC (Ultimate Callout Challenge) at Lucas Oil Raceway on the west side of Indianapolis, IN in the town of Clermont. The Ultimate Callout Challenge brings together the best competitors in North America where they battle it out by competing in a drag race, sled pull and dyno competition. UCC's mission is to become the premier diesel performance, aftermarket and specialty products expo in the world. The 2021 DPI Expo will be increasing its size by 35% to add even more industry leaders to its roster to come out and interact with fans and shops.