| General information |
|---|
| Model | AJS Stormer Y4 250 Mk 2 |
| Year | 1974 |
| Category | Cross / motocross |
| Price as new | US$ 1149. MSRP depends on country, taxes, accessories, etc. |
| Rating | 3.4 Check out the detailed rating of off-road capabilities, engine performance, maintenance cost, etc. Compare with any other bike. |
| Engine and transmission |
|---|
| Displacement | 247.0 ccm (15.07 cubic inches) |
| Engine type | Single cylinder, two-stroke |
| Power | 25.0 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 | Chain (final drive) |
| 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 tire | 2.75-21 |
| Rear tire | 4.00-18 |
| Front brakes | Expanding brake (drum brake) |
| Diameter | 127 mm (5.0 inches) |
| Rear brakes | Expanding brake (drum brake) |
| 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 | 1410 mm (55.5 inches) |
| Fuel capacity | 7.57 litres (2.00 US gallons) |
| Other specifications |
|---|
| Color options | Orange tank, grey frame, black side panels |
| Starter | Kick |
| Update specs | Report missing specs or required updates. |
| Further information |
|---|
| Insurance costs | Compare US insurance quotes from the nation's top providers. |
| Finance options | Compare US motorcycle loan quotes from the nation's top providers. |
| Parts finder |
Also check out our overview of motorcycle webshops at Bikez.info. |
| Motocross parts | Parts and accessories available from Revzilla Motocross . Ships to the US. |
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. |
| 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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(24.3 out of 100)