High-Speed Stability & Light Handling

TECHNOLOGY
High-Speed Stability & Light Handling

Designed for the performance parameters of the closed-course Ninja H2R and shared with the street-going Ninja H2, the objectives for the chassis were to ensure unflappable composure at ultra-high speeds, offer cornering performance to be able to enjoy riding on a circuit, and finally to have a highly accommodating character. Ordinarily, high-speed stability can easily be achieved with a long wheelbase, but a shorter wheelbase was selected to achieve the compact overall package and sharp handling that were also desired. An innovative new trellis frame provided both the strength to harness the incredible power of the supercharged engine, and the balanced flex to achieve the stability and pliability for high-speed riding.

Trellis Frame

Using a trellis frame construction offered an elegant, lightweight solution to meeting the chassis’ performance requirements. Able to harness the massive power of the engine, it has a balance of stiffness and flexibility that enables a very high level of stability while being able to handle external disturbances at high speeds. Its open design also helps effectively dissipate heat generated by the supercharged engine.
Pipe diameter, thickness and bend of each piece of the trellis frame were carefully selected to obtain the necessary stiffness for that part of the frame.

Single-Sided Swingarm

The Ninja H2 features Kawasaki’s first single-sided swingarm. Having a single-sided swingarm allows the exhaust silencer to be mounted closer to the bike centreline, ensuring a high bank angle for sporty cornering.
The Swingarm Mounting Plate, an innovative new chassis mechanism, bolts to the back of the engine. The swingarm pivot shaft goes through this plate, essentially allowing the swingarm to be mounted directly to the engine. Thanks to the Swingarm Mounting Plate, the frame does not need to use cross members for stability, contributing to the frame’s light weight.

Front Suspension

Based on the Air-Oil Separate cartridge fork developed for motocross racing, KYB’s AOS-II racing suspension makes its asphalt debut. Designed for low friction, the ⌀43 mm front fork offers smooth initial action followed by strong damping at the end of the stroke. As the suspension works, a large ⌀32 mm free-floating piston at the bottom of the oil-damping cartridge pumps oil up to a sealed area between the inner and outer tubes. This provides a friction-reducing film on which the tubes can slide against each other, resulting in extremely smooth action.

Rear Suspension

The KYB fully adjustable mono-shock rear suspension offers superb stability. The top of the rear shock mounts to the Swingarm Mounting Plate. The bottom of the rear shock is mounted via revised Uni-Trak linkage that offers excellent feedback regarding the rear tyre’s grip condition to the rider. The new linkage, situated below the swingarm, also mounts to the Swingarm Mounting Plate.

Brakes

A pair of massive ⌀330 mm Brembo semi-floating discs with a thickness of t5.5 mm deliver superb braking force. Grooves running down the centre of the outer edge of the discs increase their surface area for greater heat dissipation. Dual radial-mount Brembo cast aluminium monobloc calipers grip the front discs. The highly rigid opposed 4-piston calipers contribute to the superb braking force.
Brembo radial-pump master cylinder and reservoir receive extra attention before being shipped to Kawasaki. Each part is examined and adjusted to eliminate any ineffective (idle) stroke.

Original-Design Wheels

The star-pattern 5-spoke wheel design was selected based on analysis and testing to determine the optimum rigidity balance for high speed performance. The analysis technology used in their development comes from World Superbike.
The Ninja H2 is equipped with high-performance tyres, including a massive 200 mm rear tyre, to ensure sufficient tyre durability when riding at high speed.

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