Aprilia RXV
| Aprilia RXV/SXV 4.5-5.5 | |
|---|---|
| Manufacturer | Aprilia |
| Parent company | |
| Production | 2007- |
| Predecessor | |
| Successor | |
| Class | Enduro/Supermoto |
| Engine | RXV/SXV 4.5: 449 cc twin-cylinder 77° v-twin dry sump water-cooled four stroke with 12.5:1 compression ratio. RXV/SXV 5.5: 549 cc twin-cylinder 77° v-twin dry sump water cooled four stroke with 12:1 compression ratio. |
| Power | Manufacturer's claim at the crank: 60 hp for the RXV/SXV 4.5, 70 hp for the RXV/SXV 5.5. Rear wheel power measured stock on a Dynojet ATV: 54.3 hp at 11000 rpm for the SXV 4.5, 65.9 hp at 10900 rpm for the SXV 5.5. |
| Torque | NA |
| Fuel system | fuel injection, throttle body diameter: 38 mm for RXV/SXV 4.5, 40 mm for RSV/SXV 5.5. |
| Transmission | 5-speed manual with separate gearbox lubrication, final chain drive |
| Suspension | Front: 48 mm upside down fork with two adjustments. Rear: hydraulic monoshock with compression and rebound adjustment. |
| Brakes | double oversize disc, wave rotors |
| Tires | 120/70 x 17 inches, 180/55 x 17 inches |
| Rake trail | NA |
| Wheelbase | 1495 mm (58.86 inches) |
| Length | 2222 mm (87.4 inches) |
| Width | 800 mm (31.5 inches) |
| Seat height | 918 mm (36.1 inches) |
| Height | 1300.5 mm (51.2 inches) |
| Dry weight | 268lb |
| Wet weight | NA |
| Fuel capacity | 7.8 liters (2.0 gallons) |
| Related | Husqvarna SM 510R, KTM 690 SMC, Suzuki DR-Z400SM |
The Aprilia RXV/SXV series are four-stroke, v-twin, off-road motorcycles produced by Aprilia. They are available in several models, including an enduro (RXV) and supermotard (SXV). The bike was introduced in 2006.
Frame/chassis
The RXV/SXV's frame is made of a combination of tubular steel and aluminum plates. The compact engine fits into the frame in such a way that the air filter sits on top of the engine, below the gas tank, rather than the more traditional under-the-seat location. This allows for a lower distribution of weight.
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 Template:Convert/hpTemplate:Convert/test/A at the crank, while the 5.5 produces a claimed 70. Unfortunantly, horsepower measured at the crank is of little use to the average rider; horsepower measurements are much more accurate when taken at the rear wheel with a dynomometer.