| MODEL | RIEJU MRX 450 2008 |
| Year | 2008 |
| Engine Type | Single cylinder, four-stroke, DOHC, 5 valves |
| Displacement / Capacity | 449 cc / 27.4 cu in |
| Bore X Stroke | 95 x 63.4 mm / 3.7 x 2.5 in |
| Compression Ratio | — |
| Cooling System | Liquid |
| Max Power | — |
| Max Torque | — |
| Ignition | — |
| Induction | Carburettor, Keihin MX39/1 |
| Start System | Electric & kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5-speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Perimetral double-beam aluminium |
| Front Suspension | Marzocchi fork, 50 mm |
| Rear Suspension | Ohlins monoshock, progressive system (PRS) |
| Front Brakes | Double disc, 260 mm / 10.2 in |
| Rear Brakes | Single disc, 245 mm / 9.6 in |
| DIMENSION SPECS | |
| Overall Length | 2171 mm / 85.5 in |
| Overall Width | 827 mm / 32.6 in |
| Overall Height | 1303 mm / 51.3 in |
| Seat Height | 740 mm / 29.1 in |
| Wheelbase | 1485 mm / 58.5 in |
| Ground Clearance | — |
| Dry Weight | 115 kg / 253.5 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 130/90-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 10.2 Litres / 2.69 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 2008 MRX 450 is Rieju's Spanish-built competition enduro, an aluminium-framed 450 with a five-valve liquid-cooled single and premium Marzocchi and Ohlins suspension. It was the firm's most serious off-road machine of the period, finished in green.
