Suzuki GS-550L "The Performer" (Four Powerful Reasons)

The 4-Cylinder Mid-Size King ​"Four powerful reasons why it's so popular." A bold advertisement from 1981 introducing the Suzuki GS-550L. At a time when most mid-size bikes were twins, Suzuki changed the game by dropping a potent 4-stroke DOHC inline-four engine into the 550 class. This ad highlights that "big bike performance" alongside the classic American cruiser styling: pull-back bars, a plush stepped saddle, and chopped pipes. It’s the bike that proved you didn't need a 1000cc monster to rule the road.