2009 Yamaha XJ6 Diversion – An Ideal Balance
Source: Yamaha Tokyo, U.S.A.
Posted: 09 Sep 2008
About This 2009 Yamaha XJ6
NEW XJ6 Diversion:
An ideal balance of controllability, performance and value.
The demand for stylish and affordable middleweight motorcycles in Europe is growing, and for the 2009 model year Yamaha will introduce the new XJ6 Diversion.
Featuring a lightweight half cowl, this stylish new 600 has been designed to offer riders of all ages and experience levels the opportunity to own a stylish, sleek and fun-to-ride machine which has been created to deliver an ideal balance of controllability, performance and value.
Powered by an inline 4-cylinder engine which has been tuned to deliver a linear flow of strong yet easy-to-control torque, the XJ6 Diversion is one of the most flexible, rider-friendly and accomplished designs in the 600 class. Around the city, on twisty mountain roads or on the highway, this engine delivers the performance and character that today’s middleweight rider demands.
Manufactured from high-tensile steel tubing, the all-new lightweight diamond-type frame gives the XJ6 Diversion a timeless and charismatic new look. Featuring dimensions and geometry that have been selected by Yamaha’s engineers to ensure easy handling and optimum controllability over a wide range of speeds, the XJ6 Diversion chassis combines style with substance. A low seat height allows riders to get their feet on the ground with ease, and with ABS available as an option, the XJ6 Diversion is sure to appeal to a wide range of customers throughout Europe.
Possessing a style, character and quality that makes it stand out in a crowd, the new XJ6 Diversion brings a new level of excitement to the middleweight category.
Newly-developed 600cc liquid-cooled 4-stroke inline 4-cylinder engine
The XJ6 Diversion is driven by a newly developed 600cc liquid-cooled 4-stroke inline 4-cylinder engine which has been specifically designed to produce brisk performance together with an easy, predictable and linear power band.
This new design employs the basic architecture of the highly successful FZ6 engine – and shares its bore x stroke dimensions. However, although the engine’s external appearance is similar to the FZ6, the XJ6 Diversion powerplant is equipped with a wide range of new model-specific features.
Virtually every major feature on the XJ6 Diversion engine is new, and the cylinder head, crankcase, intake/exhaust systems, clutch and shifter have been developed specifically for this new middleweight. By optimizing the new engine’s entire gas flow – from the air/fuel mixture right through to the combustion and exhaust processes – Yamaha’s team of engineers have successfully created a highly responsive and characterful new engine with a linear and rider-friendly torque character.
Engine Technical Highlights
• 600cc liquid-cooled inline 4-cylinder 4-valve DOHC
• Redesigned inlet and exhaust
• Newly-developed high-compression cylinder head
• Slimmer inlet ports
• Revised cam profile
• Tuned for strong and linear low to mid-range torque
• One-piece cylinder and upper crankcase
• Rider-friendly linear power characteristics
• Bore x stroke 65.5 mm x 44.5 mm
• Lightweight forged aluminium pistons
• Four-hole two-direction fuel injection system
• 4-1 exhaust with midship muffler located beneath chassis
• 3-way catalyzer and exhaust O2 sensor
• New inner-push type clutch for easy action
• Redesigned shift mechanism for smooth and easy gearchanging
Newly-designed tubular steel diamond-type frame
In order to be able to offer XJ6 Diversion riders strong all-round running performance, together with a low seat height and slim overall chassis dimensions, we have developed an all-new diamond-type frame. Manufactured from high tensile steel pipes which are 31.8 mm in diameter and 2.3 mm thick, this attractive new frame features a very simple and neat design which has been created using the minimum number of bends and welds.
The inline-4 cylinder engine is supported at four points on the frame by means of rigid mounts, and by using the 600cc powerplant as a stressed member of the chassis, our designers have been able to create an attractive and simple frame layout.
This new frame delivers easy handling combined with impressive ride quality. For smooth cornering performance and increased surface feedback, the lateral rigidity balance of the new frame has been optimized, giving a responsive handling package that instils confidence.
Chassis Technical Highlights
• Newly designed high-tensile steel diamond-type frame
• Idealised balance of lateral rigidity for strong cornering performance
• 1,440 mm wheelbase
• Wind-beating half-cowl
• Easy-handling caster angle of 26 degrees and 103.5 mm trail
• Hexagonal slimline fuel tank with comfortable knee-grip area
• New slimline swingarm with inner bracket design
• 41 mm diameter conventional front forks
• Monocross rear suspension
• Lightweight 298 mm front discs and 245 mm rear disc, thickness 4.5 mm
• Timeless new styling emphasises concentration of mass
• Linear-control ABS available as an option
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