1975 Harley-Davidson RR350 Grand Prix Racer
1975 Harley-Davidson RR350 Grand Prix Racing Motorcycle I must admit, I don’t know a whole lot about The Motor Company’s foray into GP roadracing. HD purchased 50% of Aeronautica Macchi’s (Aermacchi) motorcycle division in the 1960s, and purchased the remainder of Aermacchi in the mid 1970s. From the Aermacchi division HD imported many two-stroke bikes…