Yamaha FZ600 (1986-90)

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The Yamaha FZ600, also known as the Yamaha YX 600 Radian, was produced from 1986 to 1990. It had a four-stroke, transverse four-cylinder, DOHC, 4 valves per cylinder engine with a capacity of 599cc. The engine had a compression ratio of 10.0:1 and was air-cooled. The motorcycle had a 4X BS30 Mikuni Carburetor type induction and used TCI ignition with a D8EA (NGK) or X24ESU (NIPPON DENSO) spark plug. The bike had an electric battery 12N with a capacity of 12A-4A/12V 12AH.

The Yamaha FZ600 had a maximum power output of 66 hp / 49.2 kW at 9500 rpm, and a maximum torque of 51.9 Nm / 38,3 ft.-lbs at 7500 rpm. The motorcycle had a wet malt-plate clutch and a 6-speed transmission with a final drive chain. Its primary reduction ratio was 22/21 x 65/28 (2.431) and secondary reduction ratio was 45/16 (2.812). The bike had a double cradle frame and used telescopic forks, coil spring, and oil damper for its front suspension. It had a front wheel travel of 140mm / 5.5 in and a swing arm, dual shock coil spring, and oil damper rear suspension with a rear wheel travel of 98 mm / 3.9 in.

The Yamaha FZ600 had two front brakes: 2x 266mm discs 2 piston caliper and a rear drum brake. It had a caster angle of 27 degrees and a trail of 128 mm / 5.04 in. The motorcycle’s dimensions were Lngth 2075 mm / 81.7 in Width 770 mm / 30.3 in Height 1095 mm / 43.1 in. It had a dry weight of 186 kg and a wet weight of 197 kg / 434 lbs. The bike had a fuel capacity of 12 litres / 3.2 US gal and a reserve of 2.5 litres / 0.7 US gal. The average fuel consumption was 44 mpg, and it had a standing 1/4 mile of 12.7 sec / 103 8 mph. The bike had a top speed of 125 mph.

Technical specifications:

Make Model: Yamaha YX 600 Radian

Year: 1986-90


Engine: Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Capacity: 599 cc / 36.5 cu-in
Bore x Stroke: 58.5 x 55.7 mm
Cooling System: Air cooled
Compression Ratio: 10.0:1
Induction: 4X BS30 Mikuni Carburetor type
Ignition: TCI
Spark Plug: D8EA (NGK) or X24ESU (NIPPON DENSO)
Starting: Electric
Battery 12N: 12A-4A/12V 12AH
Max Power: 66 hp / 49.2 kW @ 9500 rpm
Max Torque: 51.9 Nm / 38,3 ft.-lbs @ 7500 rpm
Clutch: Wet malt-plate
Transmission: 6 Speed
Final Drive: Chain

Primary Reduction Ratio: 22/21 x 65/28 (2.431)
Secondary Reduction Ratio: 45/16 (2.812)
Gear Ratio: 1st (2.733) 2nd 37/19 (1.947) 3rd 34/22 (1.545) 4th 31/25 (1.240) 5th 29/28 (1.035) 6th 27/30 (0.900)
Frame: Double cradle
Front Suspension: Telescopic forks, Coil spring, oil damper
Front Wheel Travel: 140 mm / 5.5 in
Rear Suspension: Swing arm, dual shock Coil spring, oil damper
Rear Wheel Travel: 98 mm / 3.9 in
Front Brakes: 2x 266mm discs 2 piston caliper
Rear Brakes: Drum
Front Tyre: 110/90-16-59H
Rear Tyre: 130/90-16 67H
Caster Angle: 27 degrees
Trail: 128 mm / 5.04 in
Dimensions: Lngth 2075 mm / 81.7 in Width 770 mm / 30.3 in Height 1095 mm / 43.1 in
Dry Weight: 186 kg /
Wet Weight: 197 kg / 434 lbs
Fuel Capacity: 12. Litres / 3.2 US gal
Reserve: 2.5 Litres / 0.7 US gal
Consumption Average: 44 mpg

Standing 1/4 Mile: 12.7 sec / 103 8 mph
Top Speed: 125 mph

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