The 2008 RXV 450 kept the 449 cc V-twin and chassis layout of the previous year and was presented as a straight transfer of Aprilia's enduro and…
| MODEL | APRILIA RXV 450I 2008 |
| Year | 2008 |
| Engine Type | Four-stroke, 77° V-twin, SOHC, 4 valves per cylinder |
| Displacement / Capacity | 449 cc / 27.4 cu in |
| Bore X Stroke | 76 x 49.5 mm |
| Compression Ratio | 12.5:1 |
| Cooling System | Liquid cooled |
| Max Power | 44.7 kW / 60 hp @ 13000 rpm |
| Max Torque | 54 Nm / 39.8 lb-ft @ 11000 rpm |
| Ignition | Electronic |
| Induction | Electronic fuel injection with integrated engine management, 38 mm throttle body |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump with external oil tank |
| Gear Box | 5-speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel perimeter frame with aluminium alloy vertical members |
| Front Suspension | 45 mm upside-down fork, double adjustment |
| Rear Suspension | Box-section aluminium swingarm, hydraulic monoshock with compression and rebound adjustment |
| Front Brakes | Single 270 mm disc, 4-piston caliper |
| Rear Brakes | Single 240 mm disc, 2-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2222 mm / 87.5 in |
| Overall Width | 800 mm / 31.5 in |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1495 mm / 58.9 in |
| Ground Clearance | 396 mm / 15.6 in |
| Dry Weight | 120 kg / 265 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 140/80-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 7.8 Litres / 2.1 US gal |
| Fuel Consumption | — |
| Top Speed | 183 km/h / 114 mph |
The 2008 RXV 450 kept the 449 cc V-twin and chassis layout of the previous year and was presented as a straight transfer of Aprilia's enduro and supermoto racing know-how to a showroom bike. Changes were largely detail and setup work carried over from the 2007 update, with new graphics, and Akrapovic side-exit exhausts with matching ECU maps offered as accessories.
