SnoWest Snowmobile Forum - View Single Post - Steel Lower Gear for 2016 M8?
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Old 08-29-2018, 06:21 PM
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I wouldn't worry about the life expectancy of the aluminum sprocket.
Yes it wears as it breaks in but then it is matched to the chain and ur good.
I personally have not seen or heard of an actual sprocket failure.
Tensioner failures, yes.
They have been out since 2014.

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