1987 Kawasaki KX250 Specifications and Specs
Specifications and workshop reference information for the 1987 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
| Engine Type | 2-stroke, single cylinder, piston reed valve, liquid-cooled |
| Displacement | 249 cc |
| Bore x Stroke | 67.4 x 72.0 mm |
| Compression Ratio | 10.6 : 1 |
| Carburetor | Mikuni VM38SS | Replacement Options |
| Ignition | CDI system |
| Ignition Timing | 13° BTDC @ 6,000 rpm |
| Spark Plug | NGK B9EG / BR9EG |
| Reed Valve | Piston reed valve induction |
| Port Timing | Scavenging 59.5° BBDC / Exhaust 86.5° BBDC |
| Lubrication | Petrol mix (32:1) |
| Starting System | Primary kick |
Transmission
| Transmission Type | 5-speed constant mesh |
| Clutch Type | Wet, multi-disc |
| Gear Ratios | 1st 2.133 / 2nd 1.764 / 3rd 1.388 / 4th 1.136 / 5th 1.000 |
| Primary Reduction | 2.750 (55/20) |
| Final Drive | Chain |
| Final Ratio | 3.357 (47/14) |
| Overall Drive Ratio | 9.322 (Top gear) |
| Transmission Oil | SE class SAE 10W-30 or 10W-40 (800 mL) |
Dimensions
| Overall Length | 2200 mm |
| Overall Width | 815 mm |
| Overall Height | 1225 mm |
| Seat Height | — |
| Wheelbase | 1500 mm |
| Ground Clearance | 375 mm |
| Dry Weight | 96.5 kg |
| Fuel Capacity | 7.5 L |
| Bearing Sizes |
Bearing Finder |
Chassis
| Frame Type | Tubular, single down tube |
| Caster Angle | 45° |
| Trail | 120 mm |
Suspension
| Front Suspension | Telescopic fork (air fork) | Fork Oil Levels |
| Rear Suspension | Swingarm (Uni-Trak) |
| Front Wheel Travel | 300 mm |
| Rear Wheel Travel | 300 mm |
Brakes
| Front Brake | Disc brake (220 mm) |
| Rear Brake | Disc brake (190 mm) |
Wheels & Tyres
250cc Other Specs
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