Kawasaki Z 900 (1975)

The Kawasaki Z1-B motorcycle, also known as the Z 900, was manufactured in 1975. It has a four stroke, transverse four cylinder engine with a capacity of 903cc and a compression ratio of 8.5:1. The bike has both electric and kick start options, and can reach a maximum power of 82 hp at 8500 RPM and a torque of 73.5 Nm at 7000 RPM. It has a wet sump with trachoid pump lubrication and a straight cut gears primary drive. The frame is made of double tubular steel cradle, and it has a 36 mm telescopic fork front suspension and dual shock rear suspension with 5-way preload adjustment. The bike has a single 296mm disc 2 piston caliper front brake and a 200mm drum rear brake. It has a top speed of 135 mph and can go from 0 to 60 mph in 4.8 seconds. It also has a 12.3-second standing quarter-mile time with a speed of 112 mph. The bike weighs 230kg dry and 247.6kg wet, and has a fuel capacity of 18 liters or 4.7 gallons. It has a consumption average of 48 mpg and braking distances of 29.00 ft. and 126.00 ft. from 30 mph and 60 mph, respectively. The dimensions are a length of 2209.8mm, wheelbase of 1498.6mm, handlebar width of 818mm, seat height of 812.8mm, and ground clearance of 170mm.

---

Technical specifications:

Make Model: Kawasaki Z1-B

Year: 1975

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 kg / 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