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2008 Kawasaki KX250F and KX450F Revealed
By Dirck Edge

Kawasaki announced revised motocrossers for the 2008 model year. Significant changes to the new models are described by Kawasaki below.



2008 Kawasaki KX™250F

- New shift lever position (3mm higher) and more-defined, less-chamfered gear dogs on the 3rd input and 3rd, 4th and 5th output gears for better shifting and reduced chance of a missed-shift

- More-rigid crankcase around the crankshaft and on the left side, near the input and output shafts for increased reliability

- New head gasket offers better sealing

- Thicker kick-start ratchet provides smoother and more-durable operation

- Revised frame stiffness (reduced torsional stiffness) - thanks to 10mm wider spacers between engine and chassis - improves low-speed / tight track handling by providing quicker steering

- Revised suspension tuning alters the front/rear balance (raises the rear) for quicker turning and improved bottoming resistance

- Fork features 0.5mm thicker piston rods for smoother mid-stroke action



2008 Kawasaki KX™450F

- Improved, smoother, more-controllable low-rpm throttle response and torque delivery provided by increased flywheel weight and a better-balanced crankshaft assembly

- New low-friction Kashima Coat treatment on inside surface of outer fork tube and inside of shock reservoir provides reduced friction for smoother / more-accurate suspension response

Revised frame stiffness (reduced torsional stiffness) - thanks to 10mm wider spacers between engine and chassis - improves low-speed / tight track handling by providing quicker steering

Improved shifting through revisions in the five-speed transmission

Improved reliability achieved via a new crank balance (less vibration) and better oil circulation (new oil pump and piston-cooling oil jet)

Front and rear suspension tuning received quite a bit of attention in addition to the new lower-friction internal coating

New black alumite-coated rims for a factory appearance

Source: Motorcycle Daily
 
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