Yamaha WR450F User Manual download pdf (Page 14)

Course Title

Yamaha engineers identified mass centralization as one of the keys

to great handling. The WR450F features a “Bilateral Beam”

compact aluminum frame based on the YZ250F.

Mass centralization places the mass (or weight) in the best location. On a

motorcycle it is in the centre of the machine between the wheels and should

be as low as possible (which is a difficult task on a WR or YZ due to suspension

& ground clearance requirements)

“Where possible, keep the heavy stuff in the centre of the bike and put the

lighter stuff at the ends, also keep it as low in the chassis as possible”

WR450F Frame Design – part #1

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WR450F

Mass centralization benefits:

1. Light weight feeling

2. Quick & agile handling – less effort to initiate a turn

3. More precise steering & turning

4. Fast, easy direction changes

5. Improved rider feedback

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Yamaha WR450F User Manual Page 14