5:
"Harley-Davidson FXSB Breakout's 103 cu in V-twin engine roars. Indian Chief Vintage's air-cooled thunder stroke engine is powerful. Victory Gunner's fuel-injected V-twin engine purrs. Confederate Hellcat X132's 132 ci V-twin engine growls. Ducati Diavel's 1198 cc Testastretta engine excites."