Expectations are running high for the Noale superbike, the Aprilia RSV4 1000.
Curiosity has been sparked as it appears this bike has more surprises in store.
In this video from a fan at the Mugello circuit, we can hear a different noise than that of the V4, 65° engine.
Around 1′47″, the sound changes and it seems that this prototype could have a second motor than originally thought.
It’s unclear whether the different tone arrives from a different electronic configuration or from a more open exhaust.
Whatever, it’s sent shivers up the spine.
After the jump is the official presentation video of the superbike – the sound of which is similar to that produced in the first tests at Mugello.
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