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1974 AJS Stormer Y4 250 Mk 2 Specs

General İnformation

Model AJS Stormer Y4 250 Mk 2
Year 1974
Category Cross - Motocross
Price as new US$ 1149. Prices depend on country, taxes, accessories, etc.

Engine and transmission

Displacement 247.00 ccm (15.07 cubic inches)
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
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)
Frame 2.75-21
Front tyre 2.75-21
Rear tyre 4.00-18
Front brakes Expanding brake (drum brake)
Front brakes diamete 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
Seat height 762 mm (30.0 inches) If adjustable, lowest setting.
Front percentage of weight 46,5
Rear percentage of weight 53,5
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
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