Engine
The RXV/SXV has a v-twin engine, and is one of the first off-road motorcycles to feature fuel injection. The 4.5 has a displacement of 449 cc, while the 5.5 has a displacement of 549 cc. Each engine has a single-overhead-cam and four valves per cylinder. The 77-degree cylinder angle minimizes vibration. Both are dry sump, with a separate oil tank for the gearbox and engine.
The 4.5 produces a claimed 60 horsepower (45 kW) at the crank, while the 5.5 produces a claimed 70.
Read more about this topic: Aprilia RXV/SXV
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