H.D Vintage

.Harley-Davidson introduced the middleweight "Model K" in 1952, along with the 'KR' series of 'competition class' road-racing or flat-track racers. The KR's "Milwaukee racing iron" engine was a 744cc side-valve flathead V-twin that produced around 30 horsepower. The K had a three-speed gearbox and limited power, but the KR with its 4-speed transmission was capable of a top speed of around 80