As a former Harley owner I can tell you these bikes are a little different. I think what your feeling is just the shaft drive. ON the harleys the belt drive would absorb some of the drive line shock when changing gears these shaft drives do not but offer a smoother overall operation. Still check all your fluids like your diff gear oil make sure everything is full.
2008 V-Star Silverado 1100. K&N filter, airbox mod passenger floor boards, all light visors, ISO grips, Cobra slash cut mufflers, Saddleman touring seat/ tourpack. Lots of little extras.