The Fast and the Furious
The black bike.
Harley-Davidson FLEF Hydra Glide (1953-) Difficult to see, but black bike has no shift-lever beside the tank. So I'll label it as footshift model FLEF.
Harley-Davidson FL Hydra Glide (1950-) '54 model Police http://www.chromeclassics.com/1954_hd_fl_cop.html
Few parts are remains normal shape. Identified from the reduction cover, tank, tank rubber and flame, it may be postwar Triumph Speed Twin (1946- rigid rear suspension model)