Motorcycles Specs > AJS > AJS Stormer Y4 250 Mk 2

AJS Stormer Y4 250 Mk 2 similar models



AJS Stormer Y4 250 Mk 2 Specs

(1974)
The AJS Stormer Y4 250 Mk 2 model is a Cross / motocross bike manufactured by AJS . In this version sold from year 1974 , the dry weight is 104.3 kg (230.0 pounds) and it is equipped with a Single cylinder, two-stroke motor. The engine produces a maximum peak output power of 25.00 HP (18.2 kW) @ 7000 RPM and a maximum torque of  . With this drive-train, the AJS Stormer Y4 250 Mk 2 is capable of reaching a maximum top speed of  . On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the AJS Stormer Y4 250 Mk 2 has a Double downtube, full cradle frame with front suspension being Telescopic forks and at the rear, it is equipped with  . Stock tire sizes are 2.75-21 on the front, and 4.00-18 on the rear. As for stopping power, the AJS Stormer Y4 250 Mk 2 braking system includes Expanding brake (drum brake) size 127 mm (5.0 inches) at the front and Expanding brake (drum brake) size 127 mm (5.0 inches) at the back. 

AJS Stormer Y4 250 Mk 2 General Information

Brand AJS 
Model AJS Stormer Y4 250 Mk 2 
Start year 1974 
Year 1974 
Category Cross / motocross 
Factory Warranty (Years / miles)

AJS Stormer Y4 250 Mk 2 Dimensions, Aerodynamics and weight

Frame type Double downtube, full cradle 
Seat details
Wheelbase 1,410 mm (55.5 inches) 
Length
Width
Height
Seat Height 762 mm (30.0 inches) If adjustable, lowest setting. 
Alternate Seat Height
Ground Clearance 254 mm (10.0 inches) 
Trail size
Wheels details
Front Tyres - Rims dimensions 2.75-21 
Rear Tyres - Rims dimensions 4.00-18 
Front brakes Expanding brake (drum brake) 
Rear brakes Expanding brake (drum brake) 
Front Brakes Dimensions - Disc Dimensions 127 mm (5.0 inches) 
Rear Brakes Dimensions - Disc Dimensions 127 mm (5.0 inches) 
Curb Weight (including fluids)
Dry Weight 104.3 kg (230.0 pounds) 
Front Percentage of Weight 46.5 
Rear Percentage of Weight 53.5 
Weight-Power Output Ratio : 0.2396 HP/kg 
Fuel Tank Capacity 7.57 litres (2.00 gallons) 
Reserve Fuel Capacity
Carrying Details and Capacity
Front Suspension Telescopic forks 
Front Suspension Travel 178 mm (7.0 inches) 
Rear Suspension
Rear Suspension Travel

AJS Stormer Y4 250 Mk 2 Engine and Transmission Technical Data

Engine type - Number of cylinders Single cylinder, two-stroke 
Engine details
Fuel system Carburettor. AMAL 32mm concentric 
Engine size - Displacement - Engine capacity 247.00 ccm (15.07 cubic inches) 
Bore x Stroke 68.0 x 68.0 mm (2.7 x 2.7 inches) 
Compression Ratio 11.0:1 
Number of valves per cylinder
Camshaft Valvetrain Configuration Port control 
Maximum power - Output - Horsepower 25.00 HP (18.2 kW) @ 7000 RPM 
Maximum torque
Engine Maximum RPM 8000 
Cooling system Air 
Lubrication system Pre-mix. Castrol R at 20:1 
Engine oil capacity
Exhaust system loud, expansion chamber 
Gearbox 4-speed 
Transmission type, final drive ratio Chain 
Clutch type Wet plate Diaphram 
Driveline

AJS Stormer Y4 250 Mk 2 Performance

Top Speed
Acceleration 0 to 100 km/h (0 to 62 mph)
Acceleration 0 to 400m (1/4 mile)
Recuperation 60 to 140 km/h in highest gear
Fuel Consumption - MPG - Economy - Efficiency
CO2 emissions
Emissions

AJS Stormer Y4 250 Mk 2 Electrical Systems, Ignition and Equipment

Ignition Type flywheel magneto 
Electrical Details
Starter Type Kick 
Instruments
Lights
How much horsepower does a AJS Stormer Y4 250 Mk 2 have?
The AJS Stormer Y4 250 Mk 2 has 25.00 HP (18.2 kW) @ 7000 RPM.

How much does a AJS Stormer Y4 250 Mk 2 weighs?
The AJS Stormer Y4 250 Mk 2 weighs 104.3 kg (230.0 pounds).

How tall (seat height) is a AJS Stormer Y4 250 Mk 2?
The AJS Stormer Y4 250 Mk 2 seat height is 762 mm (30.0 inches) If adjustable, lowest setting.

How many gears does a AJS Stormer Y4 250 Mk 2 have?
The AJS Stormer Y4 250 Mk 2 have 4 gears.