The History

​

The FZ-600 was Yamaha's first true attempt at a 600 cc "Race Replica" with the growing interest in MotoGP Road Racing taking hold in the mid-1980s.

The Yamaha FZ-600 was produced from 1986-1988 being replaced by the FZR-600 (1989-1999). The FZ engine was closely derived from the XJ-600 motor, which can itself trace its lineage back through the XJ-550 to the XJ-400, a Japanese home market model.

 

This motor was also used in the YX600 Radian. It also shared brakes with a huge number of other Yamaha Models before, during, and even after its production. The same front brake master cylinder was used on the FZR-600 up until the end of its production (1999). In 1986 Yamaha produced the FZ "Pure Sport" version, with more performance-oriented modifications.

​The Standard Specification is below:

·       Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder;

·       Capacity:599 cc / 36.5 cu-in;

·       Bore x Stroke: 58.5 x 55.7 mm;

·       Compression Ratio: 10.0:1;

·       Induction: 4X BS30 Mikuni carburettors;

·       Ignition: Transistorized;

·       Transmission: 6 Speed;

·       Max Power: 54.6 hp / 39.8 kW @ 9400 rpm;

·       Max Power Rear Tyre: 54.6 hp @ 9400 rpm;

·       Max Torque: 44 Nm / 32.4 lb-ft @ 7500 rpm;

·       Rear Wheel Travel: 120 mm / 4.5 in;

·       Front Brakes: 2x 269mm discs 2 piston callipers;

·       Rear Brakes: Single 240mm disc 1 piston calliper;

·       Wet Weight: 200 kg / 441 lbs.

 

These  Bikes #1 & #2

Both bikes are 1986 model originally used on the road and now upgraded for classic Production Class racing in the CRMC events and now sporting the BRT Racing colours. 

 

Some of the work done to make it competitive (within the rules of production racing) are

Front brake master cylinder rebuilt, new Brembo rear master cylinder, front and rear calipers refurbished, new front discs, stainless steel braided brake lines fitted, new ignition switch fitted. The frame, subframe, swinging arm and wheels all powder coated, all new wheel bearings, head bearings and suspension bushes replaced.

 

The front suspension was upgraded with Race Tech suspension inserts, new rear Hagon suspension unit with special spring fitted, DID chain and sprockets, new Lucas battery, the tires are Avon AM22 and AN23. New stainless steel exhaust system, new race clutch, all filters and oil renewed.

The engine refresh produced 61.82 BHP on the Dyno, aluminium rear sets, quick release fuel cap were fitted and all finished with a new race faring from Ragged Edge fairings

 

The Bikes will be used at the CRMC and BHR other classic events