| MODEL | RIEJU RS2 NKD 2007 |
| Year | 2007 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 50 cc / 3.05 cu in |
| Bore X Stroke | 40.3 x 39.0 mm / 1.6 x 1.5 in |
| Compression Ratio | — |
| Cooling System | Liquid |
| Max Power | — |
| Max Torque | — |
| Ignition | — |
| Induction | Carburettor, Dell'Orto |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6-speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | High-strength steel perimeter double-beam frame |
| Front Suspension | 36 mm Paioli upside-down hydraulic fork |
| Rear Suspension | Monoshock |
| Front Brakes | Single 280 mm disc, double-piston |
| Rear Brakes | Single 220 mm disc |
| DIMENSION SPECS | |
| Overall Length | 1900 mm / 74.8 in |
| Overall Width | 735 mm / 28.9 in |
| Overall Height | 1010 mm / 39.8 in |
| Seat Height | 800 mm / 31.5 in |
| Wheelbase | 1300 mm / 51.2 in |
| Ground Clearance | — |
| Dry Weight | 107.5 kg / 237.0 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 100/80-17 |
| Rear Tyre | 130/70-17 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
The naked (unfaired) 50 cc version of the RS2, with the same liquid-cooled two-stroke and six-speed gearbox as the faired models. Upside-down Paioli forks and a 280 mm front disc give it a sporty feel.
