Harley-Davidson KR

The Harley-Davidson KR, also called the KR750, was a flathead V-twin racing motorcycle of about 739 cc that Harley-Davidson built from 1953 through 1969 for flat track racing. A faired version, the KRTT, was used in road racing. It was developed alongside the Model K street motorcycle, which brought a hydraulic fork, rear swingarm, four-speed transmission and hand clutch to the company, in answer to British imports from Triumph, Norton and BSA. It was built for the American Motorcyclist Association Class C rules, which let ordinary riders buy the same machines as the factory team, and it dominated American racing when it appeared. In 1970 the XR-750 replaced it.