| MODEL | GILERA FASTBIKE 125 1987 |
| Year | 1987 |
| Engine Type | Two-stroke, single cylinder |
| Displacement / Capacity | 124 cc / 7.6 cu in |
| Bore X Stroke | 56 x 50 mm |
| Compression Ratio | 13.4:1 |
| Cooling System | Liquid cooled |
| Max Power | 15.4 kW / 20.7 hp @ 9200 rpm |
| Max Torque | 15.5 Nm / 11.5 lb-ft @ 8800 rpm |
| Ignition | Electronic CDI |
| Induction | Dell'Orto carburettor, premix |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks, 200 mm travel |
| Rear Suspension | Alloy swingarm, adjustable single shock, 140 mm travel |
| Front Brakes | Single 240 mm disc |
| Rear Brakes | Single disc (230 mm) |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 137 kg / 302 lb |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | 19.3 km/L |
| Top Speed | 133.3 km/h / 82.8 mph |
A road-oriented sibling of the ER 125 enduro, with an 18-inch front and 17-inch rear wheel, shorter suspension travel and a rear disc. Seen as an early forerunner of the supermotard, it sold poorly and was succeeded by the Freestyle in 1991.
