1999 Yamaha Road Star, The 2 into 1 exhaust sounds great! - Road Star?s air-cooled 1602cc, pushrod V-twin is the largest engine offered by any OEM. Beefy, 2-into-2 staggered exhaust pipes. Low seat and long wheelbase offer classic, low-strung lines. Smooth 5-speed and belt drive. Wide handlebars, plush saddle, full-length floor-boards.