| MODEL | DERBI GPR 125 2011 - 2013 |
| Year | 2011 - 2013 |
| Engine Type | Four-stroke, single cylinder, DOHC, 4 valves |
| Displacement / Capacity | 124.8 cc |
| Bore X Stroke | 58 x 47 mm |
| Compression Ratio | 12.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 10.9 kW / 15 hp @ 9250 rpm |
| Max Torque | — |
| Ignition | Electronic CDI |
| Induction | 30 mm carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6-speed |
| Clutch | Multi-disc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Dual-beam aluminium |
| Front Suspension | 40 mm upside-down fork, 110 mm wheel travel |
| Rear Suspension | Monoshock, 120 mm wheel travel |
| Front Brakes | Single 300 mm disc, radial caliper |
| Rear Brakes | — |
| DIMENSION SPECS | |
| Overall Length | 1977 mm |
| Overall Width | 795 mm |
| Overall Height | — |
| Seat Height | 800 mm |
| Wheelbase | 1355 mm |
| Ground Clearance | — |
| Dry Weight | 120 kg / 264.6 lbs |
| Wet Weight | 136 kg / 299.8 lbs |
| WHEEL SPECS | |
| Front Tyre | 110/80-17 |
| Rear Tyre | 130/70-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 14 Litres / 3.7 US gal |
| Fuel Consumption | — |
| Top Speed | — |
Launched for 2011 in racing red and grey paint to celebrate Marc Marquez's 2010 125 cc world title, this GPR replaced the two-stroke with an all-new liquid-cooled four-stroke with four valves. It also got a dual-beam aluminium frame, an underslung exhaust, a MotoGP-style LCD dash and an LED tail unit with removable track-day parts.
