1973 Kawasaki KX125
Specifications, manuals and workshop reference information.
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 | 2-stroke single cylinder, rotary disc valve |
| Displacement | 124.8 cc |
| Bore × Stroke | 56.0 mm × 50.6 mm |
| Compression Ratio | 8.2 : 1 |
| Maximum Power | 19.75 hp @ 9500 rpm |
| Maximum Torque | 1.75 kg·m @ 9000 rpm |
| Carburetor | Mikuni VM26SC |
| Lubrication | Petrol mix |
| Fuel Mix Ratio | 20 : 1 |
| Ignition | Magneto |
| Spark Plug | NGK B9EV |
| Spark Plug Gap | 0.6 mm |
Transmission
| Transmission Type | 6-speed constant mesh |
| Clutch | Wet multi-disc |
| Primary Reduction | 3.14 (69/22) |
| Final Reduction | 4.61 (60/13) |
| Overall Reduction | 12.50 |
Dimensions
| Overall Length | 2020 mm |
| Overall Width | 875 mm |
| Overall Height | 1120 mm |
| Wheelbase | 1340 mm |
| Ground Clearance | 81 mm |
| Fuel Tank Capacity | 6.5 L |
Chassis
| Frame Type | Tubular single down tube |
| Caster Angle | 59° |
| Trail | 129.3 mm |
| Front Suspension | Telescopic fork |
| Rear Suspension | Swing arm dual shock |
| Front Suspension Travel | 160 mm |
| Rear Suspension Travel | 90 mm |
Brakes & Wheels
| Front Tire | 3.00-21 |
| Rear Tire | 4.10-18 |
| Front Brake | Drum 120 mm |
| Rear Brake | Drum 130 mm |
125cc Other Specs
Community
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