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moleculo

Where to find tranny gear tooth counts?

5 posts in this topic

Does anyone know of a website or online microfishe that lists the specific number of teeth on each transmission gear for WR's & YZ's? Ronayers.com only gives basic descriptions & part numbers.

Muchas Gracias!

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There's the service manuals, of course, and there's the Yamaha Online Parts Manual

It's not alaways totally helpful for what you want to do, though, because it sometimes fails to list the number of teeth on the mainshaft 1st gear pinion, which is integral to the shaft.

You could try a post requesting the ratios of the specific transmissions you want to find out about.

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Perfect, thank you.

I'm going to install WR gears (3rd, 4th, & 5th) in my YZ 2-stroke.

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The 02 WR426 transmission will work in an '03 YZ250. The countershafts are actually the same part# for both bikes. The mainshaft part#'s are different but I think this is only because of the difference in number of teeth on first gear.

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