First off, no, this is not a custom street tracker or a custom in any way as we think of now, but a factory custom from 1953. It’s also one of Harley’s least known models that often gets mixed up with Sportsters even though that model wasn’t due to debut until 1957. Back in 1952 Harley-Davidson introduced the new sporty K model to go head to head with the British bikes that were invading America at the time with many of the same innovations they brought with them. Oh, you know, things like suspension at both ends of the bike, light weight, good handling and the newest Harley-Davidson “innovation” of unitized engine construction with the engine and gearbox as one. Triumph, BSA, Norton, Matchless were put on notice that The Motor Company was not going to let this invasion go unanswered.