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Release of the 2004 Yamaha Sports FZ6-S "Fazer" and FZ6-N "FZ6" The first full model change in six years for the European models Mounting a YZF-R6-based engine on a new-design CF Aluminum Die-cast frame

August 21, 2003

Yamaha Motor Co., Ltd. (YMC) and its European subsidiary Yamaha Motor Europe N.V. (YMENV) have now released as new European market models for 2004 the Yamaha Sports FZ6-S “Fazer” and the “naked” version FZ6-N “FZ6.” Both models mount a liquid-cooled 4-stroke, DOHC, in-line-4, 600cc engine on a new CF aluminum die-cast frame.

The new FZ6-S “Fazer” and FZ6-N “FZ6” feature a liquid-cooled 4-stroke, DOHC, 4-cylinder engine developed directly from the engine of the supersport YZF-R6 that enjoys such a high reputation in Europe. This engine is mounted on a new frame made with Yamaha’s exclusive CF aluminum die casting technology to create entirely new machines that offer a high-level marriage of the “joy of true performance riding” and “enjoyable mobility for daily use.” These models represent the first full model change in six years for the existing FZS600 “Fazer” that debuted in 1998.

Yamaha Sports FZ6-S Fazer Yamaha Sports FZ6-N FZ6

2004 European market models Yamaha Sports FZ6-S “Fazer” and FZ6-N “FZ6”


Yamaha Sports FZ6-S “Fazer,” FZ6-N “FZ6”

Release date:

FZ6-S “Fazer” : October 2003
FZ6-N “FZ6” : March 2004
(some difference in the various European countries)


Yamaha Sports FZ6-S “Fazer”
- Silver 3
- Dark Purplish Blue Metallic L
- Dark Grayish Blue Metallic E
Yamaha Sports FZ6-N “FZ6”
- Black Metallic X
- Silver 3
- Deep Red Metallic K

Market Background and Product Summary

Ever since its debut at the September 1997 Paris Show and release on the European market in 1998, the existing FZS600 Fazer (hereafter referred to as the Fazer) has won a large following as a distinctive all-rounder that can be used for everything from sport touring to everyday commuting. The reasons for this popularity included a high level of sport riding performance, good comfort in long-distance cruising and a familiarity that enables relaxed everyday riding.

This popularity has extended to a broad demographic including many people moving up from the 125cc class. This large user base helped the Fazer become the best-selling model in its class in 1999 for Europe as a whole. In the five years up until the end of 2002 it recorded total sales of nearly 83,000 units (throughout Europe). Since then, the Fazer’s popularity has remained strong and has led to an increasing call from the market for an even more mature “next generation” Fazer. To answer this call, Yamaha planned a new model that would offer a further development of the Fazer’s famous ease of use while adding a sophisticated blend of new styling refinement.

In short, Yamaha’s engineers undertook the development of a new 600cc middleweight sports bike that would offer a high-level marriage of the “joy of true performance riding” and “light and lively footwork that makes everyday riding a pleasure. ” To achieve these development goals, a 600cc fuel injection engine that has been developed directly from the engine of the 2003 model YZF-R6 has been adopted to ensure outstanding engine character. Meanwhile, the chassis has been built around an aluminum die-cast frame made possible by Yamaha’s unique CF Die Casting Technology. Besides enabling a big reduction in weight, this frame provides a distinctive new exterior appearance as well as good chassis balance. This combines with the newly optimized dimensions to give the new FZ6-S “Fazer” and FZ6-N “FZ6” even sportier riding performance characterized by light cornering performance that lets the rider enjoy leaning with the bike through the curves on winding roads.

Main Features

Liquid-cooled 4-stroke, DOHC engine developed directly from that of the YZF-R6

The new Fazer models adopt a liquid-cooled 4-stroke, DOHC, in-line-4 engine with fuel injection developed directly from that of the YZF-R6. Almost all of the basic specs and parts that contribute to the engine functions and performance, including the bore x stroke, the shape of the combustion chamber, the forged pistons, the intake/exhaust valves, the crank shaft and liner-less direct-plated cylinders are all the same as those of the YZF-R6 engine, thus ensuring outstanding performance. Meanwhile, in order to achieve the ease of use in the low- to mid-speed range that riders want in an all-rounder, the design of the cam profile has been changed along with the settings of the intake and exhaust duct lengths and diameters to achieve a new engine character different from the image associated with existing middleweight sport bikes. The maximum power output of this engine has been set at 72kW (97.9PS), which is reached at an rpm of 12,000. The maximum torque has been set at 10,000 rpm. Both of these specs are the same for the FZ6-S “Fazer” and FZ6-N “FZ6. ”

Liquid-cooled 4-stroke, DOHC engine developed directly from that of the YZF-R6

Yamaha’s first group injection type fuel injection system

To achieve outstanding response and fuel economy plus environment friendliness, fuel injection is adopted. As first on a Yamaha motorcycle, this system is a group injection type where the fuel necessary for each cylinder is divided between two injections of 50% each, this ensures a high level of reliability while also enabling a simpler structure. The compact injectors used in this system are of the 4-jet/2-direction spray type with a high dynamic range. Thanks to the added effect of the outstanding ignition timing and injection control afforded by the compact 32-bit ECU adopted on this model, it is able to achieve and even and effortless power development feeling across the full rpm range. Also adopted for the first time on Yamaha sport bikes is a “return-less” design for the fuel lines that enables a more compact design.
Also, to accommodate the fuel injection system, a down-draft intake system and an optimized air cleaner duct design have been adopted.

Yamaha's first group injection type fuel injection system

4-into-2-into-1 “up-muffler” for outstanding exhaust efficiency and a distinctive exterior appearance

The new models adopt an all new 4-into-2-into-1 “up-muffler” that gives an impressive new look to the exterior. The exhaust pipe, which achieves a strong material presence even without a black finish, features a connecting pipe between the No. 2 and No. 3 pipes that produces an outstanding exhaust pulse effect. What’s more, the silencer adopts a shell type structure and is outfitted with a protector with a twin pipe appearance that presents a fresh and innovative look.

4-into-2-into-1 "up-muffler" for outstanding exhaust efficiency and a distinctive exterior appearance


First aluminum die-cast frame in class

For its main frame with its important role in determining running performance, the new models adopt a new frame design employing Yamaha’s exclusive “CF Aluminum Die Casting Technology.” In addition to contributing to lighter weight and excellent and rigidity balance, this frame features a distinctive exterior appearance accentuated by a look of sculpted aluminum.
The CF die casting method makes it possible to eliminate the need for the usual welds, enabling a simple two-part (right-left) structure that is bolted together at two points, the head pipe assembly in the front and the pivot assembly in the rear. The engine is mounted to the frame by means of a 5-point rigid mount system including four points on the right and left sides of the crankcase and one point at the left side of the head. This made it possible to eliminate the cross members for added weight reduction (the curb weight is approximately 7 kg lighter than the existing model).

First aluminum die-cast frame in class

* The “CF Aluminum Die Casting Technology” involves (1) creating a more complete vacuum (six times more complete than conventional method) to reduce air resistance within the mold, (2) controlling the temperature of the mold so that the temperature of the molten aluminum remains more stable and (3) increasing the speed with which the molten aluminum is injected into the mold (five times faster) so that ideal mold filling occurs (high-speed filling reduces the amount of oxidized impurities in the final piece). In this way precise control of the casting conditions is possible and the resulting cast parts have about one-fifth the content of oxides in the final solidified metal compared to conventional die-cast aluminum. On the new models, CF die-cast parts have been used for the main frame, where lightweight, high-strength parts with a look of high quality were required.

All new dimensions including long rear arm design

New dimensions were adopted for this model to accommodate the new engine character. The wheelbase was expanded from the existing 1,415mm to 1,440mm while the caster angle was opened from 24 to 25 degrees and the trail increased from 88.6mm to 97.5mm. The rear arm has been lengthened from 516.5mm to 590mm. As a result, the effect of the reaction force from the road on the chain tension has been reduced to a minimum.
These new dimensions, along with the adjustment in the engine position and the movement of the battery farther forward (under the fuel tank, short of the head pipe) has made it possible to give the front wheel a 51% share of the weight distribution (49% on existing Fazer). This is one of the important points contributing to the new models’ great drivability.
The new engine position brings the crank axis 10mm farther to the rear and 5mm higher than that of the existing model, which brings the engine’s center of gravity even closer to the machine’s roll axis. This combines with the new effects of the new frame and dimensions to achieve an even greater feeling of rider-machine unity. Also the handle bar turning angle is expanded to a generous 35 degrees.

Front fork with 43mm diameter inner tubes, lightweight Monocross rear suspension

The front for adopts 43mm diameter inner tubes, the same size as those on the FZS1000 (41mm on existing Fazer), and the pitch in the fork has been increased from 190mm to 210mm. Furthermore, to accommodate these changes, the handlebar crown has been incorporated into a single squeeze-cast aluminum unit with the upper bracket that provides excellent performance qualities and good front wheel feeling. The result is a natural handling feeling characterized by a very natural steering angle in relation to the degree of machine role. Meanwhile, the rear suspension adopts a Monocross type. Although it is a link-less type was chosen, optimizing the designs of the damper valve and the oil passages have given it a cushioning function equivalent to a link-equipped suspension.

New tire sizes and the same type lightweight wheels as the YZF-R6

In order to ensure outstanding drive force, new tire sizes were chosen. Performance was optimized by changing the front tire from a 110/70 ZR17 M/C to a 120/70 ZR17 M/C, and the rear tire from a 160/60 ZR17 M/C to a 180/55 ZR17 M/C. As for the wheels, the same type of lightweight-design 5-spoke wheels used on the YZF-R6 were newly adopted to further reduce unsprung weight. By treating the hub and spokes as a continuous structural surface, it was possible to make localized reductions in part thickness while achieving optimum strength-rigidity balance.

A body design that weds a dynamic sense of volume with a premonition of light handling

The key word in the body design was “modern. ” Elements including “expression of mass concentration, ” “sculpted 3-dimmensionality” and “expression of a sense of light handling potential” combine to produce design that exudes an impression of sculpture-like volume and beauty of form.

Windscreen with good wind protection function and “two-eye” headlight (on FZ6-S “Fazer”)

The FZ6-S “Fazer” features a windscreen designed to provide the rider good wind protection while also producing minimum turbulence and wind noise. This screen is a large one that surrounds the front of the body cowl and creates a space in between that produces the effect of an interior space like the dashboard in a car. As for the headlight, a two-eye type with a fresh new design is adopted that creates a sharp impression in line with that of the YZF-R1.
Also, on the center portion of the body cowl two U shaped visors are positioned to create an escape for the air flow around the cowl that minimizes the swirl back against the rider. The overlap effect of the visor and cowl parts also creates a unique and appealing visual impression.

Special headlight and “naked” body design that accentuate the new frame (FZ6-N “FZ6”)

The naked version FZ6-N “FZ6” has been given an exterior design that accentuates the impressive new CF die-cast frame. Also, the specially designed headlight on this model gives an impression of compact concentration with the flashers and other surrounding parts, all with a strong metallic accent. The overall design gives the feeling of sharpness in terms of the airflow lines. Since the design development for the FZ6-N “FZ6” and FZ6-S “Fazer” were conducted simultaneously, there is a great sense of design harmony.

The main areas in which the FZ6-N “FZ6” design differs from the FZ6-S “Fazer” include the following.


New, special-design headlight and elimination of the cowling (accompanying the cowling elimination and resulting new headlight design, addition of aluminum stays, different horn and mirror positions and the addition of a plastic resin cover under the meters)


Revised radiator assembly design (revised radiator hose assembly, addition of a stainless steel spring to the radiator hosing, different cap surface finish, special-design radiator side covers)


Special handlebars (revised bend-in and turn-down angles that creates a shape closer to a straight handle handlebar)


Elimination of the main stand

Other features


Single-unit two-color meter panel with EL backlighting for easier viewing (tachometer on the left with bar display on white background, speedometer in the center with digital liquid-crystal display on a blue background, twin tripmeters, constant-display clock, fuel gauge)


New metallic coloring on the front fender, upper cowl portion and seat cowl (just the right amount of metallic flake is added to a semi-translucent plastic to create a surface that brings out the inherent shine of the flake while also giving a sense of depth and material quality)

2004 European Model Yamaha “FZ6-S Fazer” “FZ6-N FZ6” Technical Specifications
[ ] = FZ6-N “FZ6”

Overall length x width x height

Seat height
Dry weight
Engine type
Cylinder arrangement
Bore x Stroke
Compression ratio
Maximum power
Maximum torque
Starting system
Fuel tank capacity
Fuel supply
Tire size(Front / Rear)

2,095mm x 750mm x 1,215mm
[2,095mm x 755mm x 1,085mm]
Liquid-cooled, 4-stroke, DOHC, 4-valve
In-line 4 cylinder
65.5mm x 44.5mm
12.2: 1
Electronic-control fuel injection
120/70 ZR-17 M/C / 180/55 ZR-17 M/C

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