Page 200 of Kawasaki Motorcycles by Kawasaki USA

ENGINE Class Leading Performance Two Stage KIPS: By having the valves operate independently, the sub valves begin to open only after the main valve is fully open. Power comes on more smoothly, resulting in a more linear powerband, improved traction and overall more tractable power characteristics. The coolant passages in the cylinder are routed for improved cooling, particularly around the exhaust port. This prevents heat-induced power fade during long motos. Upright cylinder angle (5 degrees) allows better centralizes mass for improved handling and a long exhaust port for more power across the rev range. Head gasket utilizes O-rings for improved sealing and more accurate deck height. New copper plated steel washers replace the solid copper washers for improved cylinder head stud sealing.

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