| MODEL | RIEJU MARATHON 125 SM PRO 2017 |
| Year | 2017 |
| Engine Type | Single-cylinder, four-stroke, 4 valves per cylinder, air cooled |
| Displacement / Capacity | 125 cc / 7.6 cu in |
| Bore X Stroke | 56.5 x 49.5 mm / 2.2 x 1.9 in |
| Compression Ratio | — |
| Cooling System | Air |
| Max Power | — |
| Max Torque | — |
| Ignition | — |
| Induction | Carburettor, DENI P2-26 |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6-speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel double cradle perimeter with detachable rear sub-chassis |
| Front Suspension | 36 mm fork |
| Rear Suspension | Mono-shock |
| Front Brakes | Single 260 mm / 10.2 in disc, double-piston caliper |
| Rear Brakes | Single 200 mm / 7.9 in disc |
| DIMENSION SPECS | |
| Overall Length | 2070 mm / 81.5 in |
| Overall Width | 800 mm / 31.5 in |
| Overall Height | 1145 mm / 45.1 in |
| Seat Height | 870 mm / 34.3 in |
| Wheelbase | 1380 mm / 54.3 in |
| Ground Clearance | — |
| Dry Weight | 95 kg / 209.4 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 100/80-17 |
| Rear Tyre | 130/70-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 6.3 Litres / 1.66 US gal |
| Fuel Consumption | — |
| Top Speed | — |
This 2017 SM Pro is a lighter, air-cooled 125 supermoto with a smaller fork and a 260 mm front disc, quite different in hardware from the liquid-cooled Pro models that followed.
