As we turned onto the highway, that power I sought showed itself in spades. A tidal wave of torque, to the tune of 163 pound-feet (claimed) greets the rider from 2,000 rpm to 5,000. And backed with 165 hp, the Rocket’s engine keeps pulling all the way to 6,000 rpm before plateauing at its 500-rpm-higher redline (7,000 rpm). The deep purr of the engine grew with the revs, winding up to a throaty growl but never a roar. I wanted an exhaust note to match the size and power of the engine. Muted by the muffler, the Rocket never really opened up and pulled at my heartstrings like I hoped it would—an aftermarket pipe would go a long way here.
Source: MotorCyclistOnline.com