| MODEL | GILERA ER 125 1986 |
| Year | 1986 |
| 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 | Continuous steel-tube double cradle |
| Front Suspension | Telescopic forks |
| Rear Suspension | Alloy swingarm, adjustable single shock |
| Front Brakes | Single 240 mm disc |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 2180 mm / 85.8 in |
| Overall Width | 910 mm / 35.8 in |
| Overall Height | — |
| Seat Height | 870 mm / 34.3 in |
| Wheelbase | 1375 mm / 54.1 in |
| Ground Clearance | — |
| Dry Weight | 120 kg / 265 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.75-21 |
| Rear Tyre | 4.60-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 15 Litres / 3.9 US gal |
| Fuel Consumption | — |
| Top Speed | approx. 130 km/h / 81 mph |
A traditional small enduro launched in late 1986 together with the RRT Nebraska and Fastbike, sharing their engine and frame to keep costs down. It used a liquid-cooled 125 two-stroke with a 21-inch front wheel for off-road work, and sold modestly.
