| MODEL | RIEJU SMX 50 2005 |
| Year | 2005 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 50 cc / 3.05 cu in |
| Bore X Stroke | 39 x 40.3 mm / 1.5 x 1.6 in |
| Compression Ratio | 12:1 |
| Cooling System | Liquid |
| Max Power | 6.2 kW / 8.5 hp |
| Max Torque | — |
| Ignition | — |
| Induction | Carburettor, Dell'Orto HSA |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | Separate, with automatic mixer |
| Gear Box | 6-speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Perimetral double beam chassis |
| Front Suspension | Showa Advantage inverted fork |
| Rear Suspension | Showa |
| Front Brakes | Single disc, 260 mm / 10.2 in |
| Rear Brakes | Single disc, 200 mm / 7.9 in |
| DIMENSION SPECS | |
| Overall Length | 2050 mm / 80.7 in |
| Overall Width | 800 mm / 31.5 in |
| Overall Height | 1170 mm / 46.1 in |
| Seat Height | — |
| Wheelbase | 1332 mm / 52.4 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 110/80-17 |
| Rear Tyre | 130/70-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 8.4 Litres / 2.22 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 2005 SMX 50 uses a liquid-cooled two-stroke rated at around 8.5 hp with automatic oil injection and six gears. Showa inverted suspension and 260 mm front disc give it a sporty stance. Fuel tank holds 8.4 litres.
