| Aprilia RXV/SXV 4.5-5.5 | |
| Manufacturer: | Aprilia |
| Production: | 2007-2010 |
| Class: | Off road enduro (RXV) Dual sport supermoto (SXV) |
| Engine: | RXV/SXV 450: 449 cc twin-cylinder 77° v-twin dry sump water-cooled four-stroke with 12.5:1 compression ratio. RXV/SXV 550: 549 cc twin-cylinder 77° v-twin dry sump water-cooled four-stroke with 12:1 compression ratio. |
| Power: | RXV/SXV 450: 60 bhp claimed crank hp.RXV/SXV 550: 70 bhp claimed crank hp. SXV 450 measured, dynojet: 54.3 djhp at 11000 rpm. SXV 550, measured, dynojet: 68.9 djhp at 10900 rpm. |
| Torque: | NA |
| Fuel System: | fuel injection, throttle body diameter: 38 mm for RXV/SXV 450, 40 mm for RSV/SXV 550. |
| 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 |
| 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: | 313lb |
| Wet Weight: | NA |
| Fuel Capacity: | 7.8 liters (2.0 gallons) 12 litre (3.0 gallons) |
The RXV/SXV series are four-stroke, v-twin off road (RXV) or dual sport supermoto (SXV) motorcycles produced by Aprilia since 2006. Both versions have either 449cc or 549cc engine sizes.
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.[1] This allows for a lower distribution of weight.
The RXV/SXV has a v-twin engine, and is one of the first off-road motorcycles to feature fuel injection. The 450 has a displacement of 449 cc, while the 550 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 450 produces a claimed at the crank, while the 550 produces a claimed 70.[2]