| MODEL | HONDA XL 125S 1978 - 1979 |
| Year | 1978 - 1979 |
| Engine Type | Four-stroke, single cylinder, OHC |
| Displacement / Capacity | 124 cc / 7.6 cu in |
| Bore X Stroke | 56 x 49 mm |
| Compression Ratio | 9.3:1 |
| Cooling System | Air cooled |
| Max Power | 9.5 kW / 12.5 hp @ 10000 rpm |
| Max Torque | 10 Nm / 7.3 lb-ft @ 8000 rpm |
| Ignition | CDI |
| Induction | Single 26 mm Keihin carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | — |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swinging fork |
| Front Brakes | 130 mm drum |
| Rear Brakes | 120 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 818 mm / 32.2 in |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 106.6 kg / 235 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.75-21 |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | 6.8 Litres / 1.8 US gal |
| Fuel Consumption | — |
| Top Speed | 88 km/h / 55 mph |
The XL125S modernised Honda's small trail bike with maintenance-free electronic (CDI) ignition, a close-ratio gearbox, a skid plate and longer-travel suspension. Testers liked its reliability and easy four-stroke upkeep, and found it nimble on trails. The engine needed revs because it had little low-down torque, and a top speed of about 55 mph limited it to commuting and back roads. It was set up as a solo machine, with no passenger pegs.
