1984 Kawasaki KX500 Specifications and Specs
Specifications and workshop reference information for the 1984 Kawasaki KX500, 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, air-cooled |
| Displacement | 499 cc |
| Bore x Stroke | 86.0 x 86.0 mm |
| Compression Ratio | 6.7 : 1 |
| Carburetor | Mikuni VM38SS |
| Ignition | CDI system |
| Ignition Timing | 1.1 mm BTDC @ 6,000 rpm |
| Spark Plug | NGK B9EG / BR9EG |
| Reed Valve | Piston reed valve induction |
| Port Timing | Scavenging 58.5° BBDC / Exhaust 89° BBDC |
| Lubrication | Petrol mix (30:1) |
| Starting System | Primary kick |
Transmission
| Transmission Type | 5-speed constant mesh |
| Clutch Type | Wet, multi-disc |
| Gear Ratios | 1st 2.000 / 2nd 1.454 / 3rd 1.181 / 4th 0.954 / 5th 0.791 |
| Primary Reduction | 2.680 (67/25) |
| Final Drive | Chain drive |
| Final Ratio | 3.066 (46/15) |
| Overall Drive Ratio | 6.506 (Top) |
| Transmission Oil | SE class SAE 10W30 or 10W40 (0.8 L) |
Dimensions
| Overall Length | 2175 mm |
| Overall Width | 830 mm |
| Overall Height | 1245 mm |
| Wheelbase | 1480 mm |
| Ground Clearance | 340 mm |
| Dry Weight | 101 kg |
| Fuel Capacity | 10.2 L |
Chassis
| Frame Type | Tubular, single down tube |
| Caster Angle | 45° |
| Trail | 122 mm |
Suspension
| Front Suspension | Telescopic fork (air fork) |
| Rear Suspension | Swingarm (Uni-Trak) |
| Front Wheel Travel | 300 mm |
| Rear Wheel Travel | 315 mm |
Brakes
| Front Brake | Disc brake (210 mm) |
| Rear Brake | Internal expansion drum brake (130 x 28 mm) |
Wheels & Tyres
| Front Tyre | 3.00-21 4PR |
| Rear Tyre | 5.10-18 4PR |
500cc Other Specs
Community
VMX Owners Forum
Discuss vintage motocross bikes, restorations, tuning and riding.
