Z1A Specifications

Colour Schemes:
Candy Tone Brown / Orange
Candy Tone Green / Yellow

Engine Type:
Air cooled in line four cylinder four stroke

Valve Operation:
Two valves per cylinder operated by chain driven double overhead camshafts

Cubic Capacity:
903cc

Bore x Stroke:
66mm x 66mm

Compression Ratio:
8.5:1

Lubrication System:
Wet sump with gear driven oil pump

Fuel System:
4 x 28mm Mikuni VM28 SC carburettors

Air Filtration:
Paper element filter

Exhaust System:
Four into Four

Ignition System:
Battery, points and two coils

Spark Plugs:
NGK B8ES

Starting System:
Mitsuba electric starter motor and kick starter

Primary Drive:
Straight cut gears

Clutch:
Wet multi plate

Transmission:
5 speed constant mesh

Final Drive:
Enuma EK 630S-TG heavy duty endless chain with automatic oiler system

Claimed Power Output:
82 bhp @ 8,500rpm

Claimed Torque:
54.2 ft lbs @ 7,000rpm

Frame Type:
Tubular double cradle

Front Suspension:
Oil damped telescopic forks

Rear Suspension:
Swing arm with two coil over oil damped shock absorbers

Front Wheel:
19 inch Takasago chromed rim with 40 zinc spokes
Light alloy hub

Front Tyre:
3.25H x 19 4PR Dunlop Gold Seal

Rear Wheel:
18 inch Takasago chromed rim with 40 zinc spokes
Light alloy hub

Rear Tyre:
4.00H x 18 4PR Dunlop K87 MkII

Front Brake:
Hydraulically operated single 296mm disc with twin disc option

Rear Brake:
Rod operated 200mm single leading shoe drum brake

Frame Numbers:
Z1F-020001 to Z1F-047500

Engine Numbers:
Z1E-020001 to Z1E-047500

Page added to website on 10th April 2020.
Most recent page update: 10th April 2020.