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2008 Model Yamaha YZ-F Motocrossers Now On Sale

Yamaha's four-stroke motocross bikes – the YZ250F and YZ450F.

Yamaha Motor Australia has released the latest incarnations of its four-stroke motocross bikes – the YZ250F and YZ450F.

The giant Japanese manufacturer claims a number of significant improvements to the YZ450F, including reshaped intake ports and cam profiles, reduced piston tolerance and modified transmission backlash.

In addition, the bike's aluminium chassis now has a shorter header pipe, lighter forks, a compact new front caliper, and modified rear suspension. The end result, according to Yamaha, is a machine which accelerates better, turns quicker and feels lighter.

Running a higher 13.5:1 compression ratio, and offering lower reciprocating weight and reduced frictional losses, the 2008 model YZ250F is claimed to run even harder and faster. And to handle the extra performance, Yamaha's fitted an uprated clutch with an increased oil supply. The suspension has also been revised via lighter forks and new shock settings.

Both models come in two colour schemes: standard Yamaha Racing Blue/White, and Special Edition White/Red.

For more information, including prices, contact your local Yamaha dealer or visit www.yamaha-motor.com.au

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