The Supersport 1000cc class of 2006

2) Optimized frame balance The Deltabox V (Victory) frame designed through a process of structural analysis and repeated testing based on the concept used for the MotoGP competition model YZR-M1, has been further revised to achieve optimum rigidity balance for improved handling. The portion of the main frame where the forward engine mounts are located is made from layers of cast aluminum and aluminum plate (sheet metal) and the thickness of the cast aluminum piece that forms the inner layer has been reduced by 1 mm in some places for optimum balance.

For the YZF-R1 SP, additional changes have been made in the attaching portion of the engine mount area to achieve a setting that contributes to even better handling in cases such as high-speed circuit riding. Optimization of the connecting point rigidity in line with the chassis concept has helped achieve excellent handling characteristics to answer the needs of a variety of circuit riding situations.

Furthermore, the rigidity and shape of the under-bracket for the front fork has been revised along with the rigidity balance of the outer tube. The combined effect of these changes is an ideal rigidity balance in terms of the amount of "give" in the frame during cornering. The result is smoother response characteristics from the frame from the point of entering a turn until you begin to accelerate out of it, which contributes to this model's outstanding cornering performance.

3) Longer wheel base and longer swinging arm The upside down truss shaped aluminum rear arm maintains basically the same structure while being lengthened by 16 mm in the front-rear direction. The resulting increase in distance between the pivot and the rear axle contributes to reduced interference to the chassis resulting from chain tension during cornering, while also providing a good rigidity balance for achieving strong traction performance. This further improves the YZF-R1's excellent secondary steering performance. The resulting lengthening of the wheelbase is also 16 mm than the existing model.

4) Slipper clutch In order to further increase the capability for smooth approach into the turns, a slipper clutch has been adopted. This clutch has a mechanism that controls the amount of torque being transmitted from the rear wheel to the crank.

5) Ohlins suspension front and rear In order to provide excellent cornering performance in circuit riding, Ohlins suspensions have been adopted front and rear. These suspensions have been developed by Ohlins staff, who are highly experienced as MotoGP machine setting crew members, working together with highly experienced Yamaha machine development staff through repeated road tests. The suspensions are characterized by the capacity to work up excellent settings based on the desired concept and provide a high-level balance of circuit performance potential as well as the qualities needed for use on public roads.

6) Forged aluminum Marchesini wheels

In order to further improve on the excellent handling characteristics of this model, lightweight forged aluminum wheels have been adopted for the best combination with the new frame spec. Adopted for the first time on a Yamaha production models for use on public roads, these wheels have been jointly developed by Yamaha and Marchesini engineers according to Yamaha manufacturing standards and are specially manufactured by Marchesini. In appearance they have the same "Y" shaped spokes as the YZR-M1 MotoGP machine's wheels. The two wheels combine to give a weight reduction of about 400 g compared to the existing model's wheels.

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