SUZUKIGT 550M 1974 - 1977

　　The GT 550M, known as the Indy in the States, had been around since 1972, gaining a disc front brake, a few horsepower, and a few other improvements along the way. Similar in looks and layout to the GT380 triple, it was notable for employing Suzuki's Ram Air System—which referred to the simple piece of bent metal that helped direct a cooling breeze over the cylinder head. Breathing in through a trio of 28 mm Mikuni carburetors and out through a bulky four-pipe exhaust system, the 543cc motor produced 53 HP at 7500 rpm.