| General information |
|---|
| Model: | AJS Stormer Y4 250 Mk 2 |
| Year: | 1974 |
| Category: | Cross / motocross |
| Rating: | 68.1 out of 100. Show full rating and compare with other bikes |
| Price as new (MSRP): | US$ 1149. Prices depend on country, taxes, accessories, etc. |
| Engine and transmission |
|---|
| Displacement: | 247.00 ccm (15.07 cubic inches) |
| Engine type: | Single cylinder, two-stroke |
| Power: | 25.00 HP (18.2 kW)) @ 7000 RPM |
| Max RPM: | 8000 |
| Compression: | 11.0:1 |
| Bore x stroke: | 68.0 x 68.0 mm (2.7 x 2.7 inches) |
| Fuel system: | Carburettor. AMAL 32mm concentric |
| Fuel control: | Port control |
| Ignition: | flywheel magneto |
| Lubrication system: | Pre-mix. Castrol R at 20:1 |
| Cooling system: | Air |
| Gearbox: | 4-speed |
Transmission type,
final drive: | Chain |
| Clutch: | Wet plate Diaphram |
| Exhaust system: | loud, expansion chamber |
| Chassis, suspension, brakes and wheels |
|---|
| Frame type: | Double downtube, full cradle |
| Front suspension: | Telescopic forks |
| Front wheel travel: | 178 mm (7.0 inches) |
| Front tyre: | 2.75-21 |
| Rear tyre: | 4.00-18 |
| Front brakes: | Expanding brake (drum brake) |
| Front brakes diameter: | 127 mm (5.0 inches) |
| Rear brakes: | Expanding brake (drum brake) |
| Rear brakes diameter: | 127 mm (5.0 inches) |
| Physical measures and capacities |
|---|
| Dry weight: | 104.3 kg (230.0 pounds) |
| Power/weight ratio: | 0.2396 HP/kg |
| Front percentage of weight: | 46.5 |
| Rear percentage of weight: | 53.5 |
| Seat height: | 762 mm (30.0 inches) If adjustable, lowest setting. |
| Ground clearance: | 254 mm (10.0 inches) |
| Wheelbase: | 1,410 mm (55.5 inches) |
| Fuel capacity: | 7.57 litres (2.00 gallons) |
| Other specifications |
|---|
| Color options: | Orange tank, grey frame, black side panels |
| Starter: | Kick |
| Further information |
|---|
| Insurance costs | Get a US insurance quote from Progressive. |
| Parts finder |
Chaparral provides online schematics & OEM parts for the US.
2Wheels offers first time 2Wheels buyers $10.00 off now. Same day shipment to the US.
Also check out our overview of motorcycle webshops at Bikez.info. |
| Motocross parts | Parts and accessories available from Revzilla Motocross . Ships to most countries. |
| Ask questions | Join the 74 AJS Stormer Y4 250 Mk 2 discussion group or the general AJS discussion group. |
| Related bikes | List related bikes for comparison of specs. |
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Rating sample for this AJS bike
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Touring capabilities for the 1974 AJS Stormer Y4 250 Mk 2:
 (24.3 out of 100)
Click here for complete rating. You can also compare bikes.
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