1979 Kawasaki KLX250 Specifications and Specs
Specifications and workshop reference information for the 1979 Kawasaki KLX250, 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 | 4-stroke, single cylinder, OHC, air-cooled |
| Displacement | 246 cc |
| Bore x Stroke | 70.0 x 64.0 mm |
| Compression Ratio | 8.9 : 1 |
| Maximum Power | 21.3 HP @ 8,000 rpm |
| Maximum Torque | 2.0 kg·m @ 6,500 rpm |
| Carburetor | Mikuni VM32SS | Replacement Options |
| Ignition | Electronic CDI |
| Ignition Timing | 15° BTDC @ 1,750 rpm / 40° BTDC @ 4,250 rpm |
| Spark Plug | NGK B7ES |
| Valve Clearance (Cold) | Inlet 0.05–0.10 mm / Exhaust 0.08–0.13 mm |
| Lubrication | Pressure lubrication (wet sump) |
| Engine Oil Capacity | 1.5 L |
Transmission
| Transmission Type | 5-speed constant mesh |
| Clutch Type | Wet, multi-disc |
| Gear Ratios | 1st 2.643 / 2nd 1.733 / 3rd 1.300 / 4th 1.050 / 5th 0.882 |
| Primary Reduction | 3.29 (69/21) |
| Final Drive | Chain |
| Final Ratio | 3.29 (46/14) |
| Overall Drive Ratio | 9.45 (Top gear) |
Dimensions
| Overall Length | 2113 mm |
| Overall Width | 880 mm |
| Overall Height | 1176 mm |
| Seat Height | 840 mm |
| Wheelbase | 1420 mm |
| Ground Clearance | 305 mm |
| Dry Weight | 106 kg |
| Fuel Capacity | 9.5 L |
| Bearing Sizes |
Bearing Finder |
Chassis
| Frame Type | Tubular, single down tube |
| Caster Angle | 45° |
| Trail | 121 mm |
Suspension
| Front Suspension | Telescopic fork | Fork Oil Levels |
| Rear Suspension | Swingarm |
| Front Wheel Travel | 250 mm |
| Rear Wheel Travel | 150 mm |
Brakes
| Front Brake | Drum brake (120 mm) |
| Rear Brake | Drum brake (130 mm) |
Wheels & Tyres
250cc Other Specs
Community
VMX Owners Forum
Discuss vintage motocross bikes, restorations, tuning and riding.
