2006 Expedition 550F - Engine: 553.4 cc / 33.8 ci, Rotax®, Horizontal In-line, 2 cylinders, 2-Stroke, Air / Fan cooled, Reed Valve, 76 mm / 2.99 in x 61 mm / 2.4 in, gas / Oil Injected, Mikuni
2006 GSX 380F - engine: 368.3 cc / 22.5 ci, Rotax®, Horizontal In-line, 2 cylinders, 2-stroke, Air / Fan cooled, Reed Valve, 62 mm / 2.4 in x 61 mm / 2.4 in, Mikuni.