1988 Kawasaki KX250
Specifications and workshop reference information for the 1988 Kawasaki KX250, 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
| Model | Kawasaki KX250 |
| Engine type | 2-stroke, single-cylinder, liquid-cooled |
| Displacement | 248 cc |
| Bore x Stroke | 67.4 x 70.0 mm |
| Compression ratio | 9.8:1 (high), 11.3:1 (low) |
| Fuel capacity | 8.5 L |
| Dry weight | 96.5 kg |
Performance
| Ignition timing | 14° BTDC @ 6000 rpm |
| Fuel mix | 32:1 |
| Starting system | Kick |
Engine
| Type | Air cooled, 2-stroke |
| Cylinder | Single-cylinder, piston reed valve |
| Carburetor | Keihin PWK38 |
| Ignition | CDI |
| Spark plug | NGK B9EG / BR9EG |
Carburetor
| Type | Keihin PWK38 |
| Fuel mix ratio | 32:1 |
Transmission
| Type | 5-speed constant mesh |
| Clutch | Wet, multi-plate |
| Final drive | Chain |
| 1st gear | 2.133 |
| 2nd gear | 1.687 |
| 3rd gear | 1.388 |
| 4th gear | 1.136 |
| 5th gear | 1.000 |
| Primary ratio | 2.750 |
| Final ratio | 3.357 |
Dimensions
| Length | 2190 mm |
| Width | 815 mm |
| Height | 1205 mm |
| Wheelbase | 1490 mm |
| Ground clearance | 370 mm |
Chassis
| Frame | Tubular, single down tube |
| Front suspension | Telescopic fork (USD) |
| Rear suspension | Uni-Trak swingarm |
| Front travel | 300 mm |
| Rear travel | 330 mm |
Steering
| Steering angle | 45° |
| Caster | 27° |
| Trail | 112 mm |
Brakes & Wheels
| Front brake | Disc |
| Rear brake | Disc |
| Front tire | 80/100-21 |
| Rear tire | 110/100-18 |
Electrical
| Ignition | CDI |
| Generator | A.C. generator |
Tanks
Workshop Data
| Transmission oil | 800 mL (SAE 10W30 / 10W40) |
| Front fork oil | 373–381 mL |
| Fork oil level | 138–142 mm |
| Front tire pressure | 21 psi |
| Rear tire pressure | 21 psi |