1958 AJS 350 Metisse Specifications and Specs
Specifications and workshop reference information for the 1958 AJS 350-Metisse, 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 | Single-cylinder, four-stroke, air-cooled (AJS/Matchless) |
| Displacement | 348 cc |
| Bore × Stroke | 79.0 × 89.0 mm |
| Compression Ratio | ~7.5:1 |
| Maximum Power | ~22–26 hp |
| Maximum Torque | 6 lb-ft (21.7 Nm) |
| Carburetor | Amal Monobloc | Replacement Options |
| Lubrication | Dry sump |
| Ignition | Magneto |
| Spark Plug | Champion N5 / NGK equivalent |
| Spark Plug Gap | 0.5 – 0.6 mm |
| Valve Clearance (cold) | Intake: 0.10 mm / Exhaust: 0.15 mm |
Transmission
| Transmission Type | 4-speed constant mesh |
| Clutch | Wet multi-plate |
| Primary Reduction | 2.625 : 1 |
Dimensions
| Overall Length | 2050 mm (80.7 inches). |
| Wheelbase | 1,380 mm |
| Fuel Tank Capacity | 8.0 L |
| Bearing Sizes |
Bearing Finder |
Chassis
| Frame Type | Nickel-plated steel (Rickman Metisse style) |
| Front Suspension | Telescopic forks | Fork Oil Levels |
| Rear Suspension | Twin shock |
Brakes & Wheels
350cc Other Specs
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