In addition to the performance gains, the DVT engine also exhibits improved combustion efficiency, helping to achieve Euro 4 compliance and also improving fuel economy by 8 percent. A new airbox, exhaust silencer, and engine covers all decrease NVH (noise, vibration, and harshness) values as well, another key consideration for Euro 4 compliance. (These changes, along with the DVT mechanism, add nearly 12 pounds to this year’s bike.) The new motor—no treble, all bass—sounds great. And if you’re worried about added complexity increasing maintenance requirements, don’t; the valve check interval of this engine is extended to 18,600 miles.