What It Takes To Turn an Ordinary Motorcycle Into a Racing Superbike

"When he brakes, push up against the handle with your hands to brace yourself," David Swarts says. "That's what surprises people most, is the braking."

I'm standing in the paddock of the New Jersey Motorsports Park where all the racing teams are fiddling with electronics and swapping out wheels. The MotoAmerica racing series, the premier superbike racing circuit in the United States, is here for the third of nine rounds of races that run from April to September.