| MODEL | RIEJU MARATHON 125 COMPETIZIONE 2011 |
| Year | 2011 |
| Engine Type | Single cylinder, four-stroke, 4 valves |
| Displacement / Capacity | 125 cc / 7.63 cu in |
| Bore X Stroke | 52 x 58.6 mm / 2.0 x 2.3 in |
| Compression Ratio | — |
| Cooling System | Liquid |
| Max Power | — |
| Max Torque | — |
| Ignition | — |
| Induction | Keihin CVEK 30 carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 6-speed |
| Clutch | Wet multidisc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Double cradle, high-resistance steel perimeter |
| Front Suspension | Marzocchi fork, 40 mm |
| Rear Suspension | Gas mono-shock, PRS system |
| Front Brakes | Single Galfer wave disc, double piston, 300 mm / 11.8 in |
| Rear Brakes | Single Galfer wave disc, 200 mm / 7.9 in |
| DIMENSION SPECS | |
| Overall Length | 2150 mm / 84.6 in |
| Overall Width | — |
| Overall Height | 1200 mm / 47.2 in |
| Seat Height | 900 mm / 35.4 in |
| Wheelbase | 1395 mm / 54.9 in |
| Ground Clearance | — |
| Dry Weight | 115 kg / 253.5 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 120/80-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 6.3 Litres / 1.66 US gal |
| Fuel Consumption | — |
| Top Speed | — |
Sportier green/yellow version of the Marathon 125 with a Keihin carburettor, Marzocchi fork, Galfer wave discs, LeoVince exhaust and Tommaselli tapered bars. It is heavier than the standard model at 115 kg.
