When BSA wanted more power from the Bantam, Pike suggested they draft in a proven Bantam racer, Hermann Meier (who would later design Royal Enfield’s 250 racer GP5, of which maybe 30 were produced in 1965). Meier had shown in Floyd Clymer’s book how to shrink a deeply finned aluminum "muff" onto the OD of a cut-down iron Bantam cylinder to improve cooling, keeping pistons alive at higher powers. Other mods included moderate porting, copiously finned head, a bigger carburetor, various kinds of exhaust pipe, and a “stuffed” crankcase. The result was 10 hp and a claimed top speed of 80 mph. Pike remarked that, “He doubled the power of the Bantam in a few months,” and was then called upon to design 150 and 175cc versions. Pike did, however, see to it that Meier’s enterprise was moved away from his race shop, taking its “dreadful noise” with it.