But it is aggressive, and that’s an impression backed up by the Domiracer’s parallel-twin engine breathing through open pipes. Only, the Norton sounds like a Ducati, not a classic British twin, thanks to its 270-degree crank. Although the engine is unmodified internally, it actually makes 4 hp more than in Commando guise (because of the open exhaust), larger airbox, and shorter velocity stacks. Claimed power is 83 hp at 6,500 rpm. But the 961 experience is all about grunt. Peak torque is said to be 66 pound-feet at 5,200 rpm, so you can short-shift at 5,000 rpm, enjoy the noise, and still make good progress.