| MODEL | GILERA KZ 125 1986 - 1987 |
| Year | 1986 - 1987 |
| Engine Type | Two stroke, single cylinder, reed valve |
| Displacement / Capacity | 124 cc / 7.6 cu in |
| Bore X Stroke | 56 x 50.5 mm |
| Compression Ratio | 13.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 21.8 kW / 29.3 hp @ 9900 rpm |
| Max Torque | 18 Nm / 13.2 lb-ft @ 10250 rpm |
| Ignition | CDI |
| Induction | 28 mm Dell'Orto PHBH carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 speed |
| Clutch | Multi-disc, oil bath |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Diagonal double cradle, tubular steel |
| Front Suspension | Traditional 36 mm fork, adjustable anti-dive |
| Rear Suspension | Hydraulic shock absorber, adjustable spring preload |
| Front Brakes | Single 240 mm disc, 2 piston caliper |
| Rear Brakes | Single 240 mm disc |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 760 mm / 29.9 in |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 126 kg / 277.7 lbs |
| WHEEL SPECS | |
| Front Tyre | 100/80-16 |
| Rear Tyre | 120/80-16 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | 19.9 km/l |
| Top Speed | 152.6 km/h / 95 mph |
A 125 cc liquid-cooled two-stroke from Gilera, with a 29 hp reed-valve engine and a six-speed gearbox. It was a light bike (about 126 kg wet) with a modest 760 mm seat.
