Segment: Clasic
Production years: 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966
3 Photos
The 1957 AJS Model 31 650 has, at its heart, an air-cooled, four-stroke, 646cc, parallel twin powerhouse paired to a four-speed manual transmission, and can reach a maximum power output of 43 horsepower at 6000 rpm.
It comes standard with features such as a blacked-out frame, a suspension package composed of a front telescopic fork and dual shocks as a rear suspension, a dual seat, a chromed, dual exhaust system, laced wheels, full fenders, and a dual tone paint scheme.
AJS Model 31 650 1957-1966
AJS Model 31 650 646
| engine specs | Type: | air-cooled, four-stroke, parallel twin cylinder, OHV, 2 valves per cylinder | Displacement: | 646 cm3 | Bore X Stroke: | 2.8x3.1 in OR 71 mm | Compression Ratio: | 7.5:1 | Horsepower: | 43/6000 KW(hp)/RPM | Torque: | 0/- lb-ft/RPM OR 0 Nm/RPM | Fuel System: | carburetor |
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| transmission specs | Gearbox: | 4-speed, manual | Clutch: | wet multi-disc, manual | Primary Drive: | - | Final Drive: | chain |
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| chassis specs | Frame: | steel | Front Suspension: | telescopic fork | Rear Suspension: | dual shocks | Front Brake: | drum | Rear Brake: | drum |
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| dimension specs | Overall Length: | - | Overall Width: | - | Seat Height: | - | Wheelbase: | - | Ground Clearance: | - | Weight: | - | Fuel Capacity: | - |
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| tyres specs | Front: | 3.25 -19 | Rear: | 3.50 -19 |
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