The traditional definition of a street tracker is a motorcycle that has all the trappings of a flat tracker, with the addition of lights, street-biased tires, and a front brake. But what if you took the concept a step further, and sprinkled some supermoto ingredients into the mix? You'd probably end up with something like this spicy custom Sportster 1200. The bike belongs to and was built by Xavi Dynamische—a Barcelona-based enthusiast who loves café racers, streetfighters, and supermotos ...