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08' 505xcf oil pump drive gears, what the heck?

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After having several people mention the oil pump gears wearing out I decided to order a set from Blais racing. They've been sitting on my tool box for several weeks, I'm planning on riding this weekend so I went about installing them along with the water pump balancer shaft. I started looking behind the clutch basket and became a little confused when I saw steel gears not the plastic I expected to see. I removed the smaller gear on the oil pump and the drive is the same style but the gear is deeper. Anyways, was I talked into something this model does not need or did a few come this way and others with plastic gears?

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They changed to plastic in 09. You have the good ones.

Also the pumps themselves wear out.

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