1978 Honda XL350 Specifications and Specs
Specifications and workshop reference information for the 1978 Honda XL350, 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 | Four-stroke, single cylinder SOHC |
| Displacement | 348 cc / 21.2 cu-in |
| Bore × Stroke | 82 × 66 mm |
| Compression Ratio | 9.0:1 |
| Maximum Power | 30 hp @ 7500 rpm |
| Maximum Torque | 27 Nm @ 6500 rpm |
| Carburetor | Keihin 32 mm | Replacement Options |
| Lubrication | Dry sump |
| Fuel Mix Ratio | Straight unleaded fuel |
| Ignition | Battery and coil |
| Spark Plug | NGK D8ES |
| Spark Plug Gap | 0.6 - 0.7 mm |
| Valve Clearance (Intake) | 0.05 mm |
| Valve Clearance (Exhaust) | 0.08 mm |
Transmission
| Transmission Type | 6-speed |
| Clutch | Wet multi-plate |
| Final Reduction | Chain |
Dimensions
| Overall Length | 2205 mm |
| Overall Width | 910 mm |
| Overall Height | 1180 mm |
| Wheelbase | 1420 mm |
| Ground Clearance | 240 mm |
| Fuel Tank Capacity | 9.5 L |
| Bearing Sizes |
Bearing Finder |
Chassis
| Frame Type | Steel tube cradle frame |
| Caster Angle | 28° |
| Trail | 115 mm |
| Front Suspension | Telescopic forks | Fork Oil Levels |
| Rear Suspension | Dual shock swingarm |
| Front Suspension Travel | 200 mm |
| Rear Suspension Travel | 100 mm |
Brakes & Wheels
350cc Other Specs
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