Page 190 of Kawasaki Motorcycles by Kawasaki USA

CHASSIS The Making of a Champion The new, all-aluminum perimeter frame is a composite structure comprising forged, extruded, and cast components. The construction method for each frame component is chosen with consideration for weight and strength. This yields a very strong structure but of the lightest weight possible. Forging Extrusion Casting Compared to the 05 KX250Fs steel frame, the new aluminum frame offers a weight savings of 1.0 kg. The new all-aluminum frame locates the centre of gravity and key chassis dimensions (swingarm pivot, output sprocket and rear axle) such that squat is minimised. This maximises the rear tires ability to drive the bike forward. After initial chassis dimensions were determined, we set the frames torsional and longitudinal rigidity balance to suit high-level riding.

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