The small displacement, Italian-built Harley-Davidson production racing Sprints never achieved the legendary status in American professional racing that they deserved.
The simple design, a horizontal “sloper” four-stroke 250cc, later enlarged to 350ccs, won every AMA Grand National Championship discipline it was entered in: short track, road race and even TT, though the TT and and road race were short-lived “Lightweight” Grand National Championship (GNC) events.
Nevertheless, this distinction in GNC competition is one only a few much more vaunted motorcycle types can match. The Sprint racers took two basic forms — the CR, which was a brakeless, rigid framed flat tracker, and the CRTT, the fully-suspended road racer. While starting out sharing some components with its more pedestrian street models, after a redesign in 1966, it shared almost no components,…