| MODEL | AJS MODEL 14 250, 250 CSR, SCRAMBLER 1958 - 1966 |
| Year | 1958 - 1966 |
| Engine Type | Single cylinder, 4-stroke, OHV |
| Displacement / Capacity | 248.5 cc / 15.2 cu in |
| Bore X Stroke | 69.85 x 64.84 mm |
| Compression Ratio | 7.8:1 (Scrambler 11.5:1) |
| Cooling System | Air cooled |
| Max Power | 12.4 kW / 17 hp @ 7250 rpm (1965 CSR) |
| Max Torque | — |
| Ignition | — |
| Induction | Amal monobloc carburettor, type 376/250 |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4-speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Open tubular steel frame |
| Front Suspension | Telescopic fork |
| Rear Suspension | Swingarm, twin shock |
| Front Brakes | Drum, 6 in |
| Rear Brakes | Drum, 6 in |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 760 mm / 30 in |
| Wheelbase | 1345 mm / 53 in |
| Ground Clearance | 140 mm / 5.5 in |
| Dry Weight | 148 kg / 325 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | 18 Litres / 4.8 US gal (Scrambler 12.5 Litres / 3.3 US gal) |
| Fuel Consumption | — |
| Top Speed | — |
AMC returned to the 250 class in 1958 with this all-new overhead-valve single, shared with the Matchless G2. The oil tank was built into the crankcase so the engine looked like a unit-construction design, although it kept a separate gearbox, and it sat in a simple open tubular frame with a telescopic fork and swinging-arm rear end. Standard and sports versions were dropped by mid-1963, while the CSR super-sport model carried on until 1966; a scrambler variant used higher compression and closer gearing.
