1979 Kawasaki KX125 Specifications and Specs
Specifications and workshop reference information for the 1979 Kawasaki KX125, including engine, chassis, service data and setup details.
Note: Specs are compiled from factory data, manuals and owner feedback. Bikes vary — if yours is different, jump into the forum and share it.
General Specifications
| Engine Type | Air-cooled 2-stroke single-cylinder piston reed valve |
| Displacement | 124 cc |
| Bore × Stroke | 56.0 × 50.0 mm |
| Compression Ratio | 7.1:1 |
| Maximum Power | 25 hp |
| Maximum Torque | 18 Nm |
| Carburetor | Mikuni VM28SS |
| Lubrication | Premix |
| Fuel Mix Ratio | 20:1 |
| Ignition | CDI magneto |
| Spark Plug | NGK B8ES |
| Spark Plug Gap | 0.6 – 0.7 mm |
Transmission
| Transmission Type | 5-speed manual |
| Clutch | Wet multi-plate |
| Primary Reduction | 3.181 |
| Final Reduction | 3.923 |
| Overall Reduction | 12.48 |
Dimensions
| Overall Length | 2100 mm |
| Overall Width | 830 mm |
| Overall Height | 1145 mm |
| Wheelbase | 1385 mm |
| Ground Clearance | 270 mm |
| Fuel Tank Capacity | 9 L |
Chassis
| Frame Type | Steel single cradle |
| Caster Angle | 28° |
| Trail | 112 mm |
| Front Suspension | Telescopic forks |
| Rear Suspension | Twin shock swingarm |
| Front Suspension Travel | 220 mm |
| Rear Suspension Travel | 130 mm |
Brakes & Wheels
| Front Tire | 2.75-21 |
| Rear Tire | 3.50-18 |
| Front Brake | Drum brake |
| Rear Brake | Drum brake |
125cc Other Specs
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