Kawasaki Z 900 (1974)

The Kawasaki Z1-A was a popular motorcycle model produced in 1974. It featured a four stroke, transverse four cylinder engine with a capacity of 903 cc and 2 valves per cylinder. The engine had a compression ratio of 8.5:1 and a maximum power output of 82 hp at 8500 rpm. The Z1-A also had a wet sump, trachoid pump lubrication system and 4 x 28mm Mikuni VM28SC induction. The motorcycle had both electric and kick starting options and a wet, multi-plate clutch. Its transmission had 5 speeds and a chain final drive. The Z1-A’s frame was made of double tubular steel cradle, and its suspension consisted of 36mm telescopic forks in the front and dual shock with 5-way preload adjustment in the rear. Its braking system included a single 296mm disc with 2 piston caliper in the front and a 200mm drum in the rear. The motorcycle had a top speed of 135 mph and could accelerate from 0-60 mph in 4.8 seconds. Its fuel capacity was 18 litres or 4.7 gallons and its average consumption was 48 mpg. The Z1-A was also noted for its braking distance, being able to stop from 30 mph to 0 in 29 feet and from 60 mph to 0 in 126 feet. Overall, the Kawasaki Z1-A was a powerful and reliable motorcycle model that was popular among riders during its time.

Technical specifications:

Make Model: Kawasaki Z1-A

Year: 1974
Engine: Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder.
Capacity: 903 cc / 55.1 cu-in
Bore x Stroke: 66 x 66 mm
Cooling System: Air cooled
Compression Ratio: 8.5:1
Lubrication: Wet sump, trachoid pump
Air Filtration: Treated synthetic fiber
Induction: 4 x 28mm Mikuni VM28SC
Ignition: Battery and coil
Starting: Electric & kick
Max Power: 82 hp / 59.8 kW @ 8500 rpm
Max Torque: 73.5 Nm / 54.3 lb-ft @ 7000 rpm
Clutch: Wet, multi-plate
Transmission: 5 Speed
Final Drive: Chain
Primary Drive: Straight cut gears
Gear Ratio: 1st 12.79:1 2nd 8.84:1 3rd 6.74:1 4th 5.58:1 5th 4.92:1
Frame: Double tubular steel cradle
Front Suspension: 36mm Telescopic forks
Rear Suspension: Dual shock, 5-way preload adjustment
Front Brakes: Single 296mm disc 2 piston caliper
Rear Brakes: 200mm drum
Front Tyre: 3.25 H19
Rear Tyre: 4.00 S18
Rake: 27 o
Trail: 3.75 in.
Dimensions: Length 2209.8 mm / 87.0 in.
Wheelbase: 1498.6 mm / 59.0 in
Handlebar Width: 818 mm / 32.2 in.
Seat Height: 812.8 mm / 32.0 in.
Ground Clearance: 170 mm / 6.75 in.
Dry Weight: 230 kg / 507 lbs
Wet Weight: 247.6 lbs / 546 lbs
Fuel Capacity: 18 Litres / 4.7 gal
Consumption Average: 48 mpg
Braking Distance 30 mph – 0: 29.00 ft.
Braking Distance 60 mph – 0: 126.00 ft.
Acceleration 0-30 mph: 2.7 sec
Acceleration 0-60 mph: 4.8 sec
Standing 1/4 Mile: 12.3 sec / 112 mph
Top Speed: 135 mph