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Old May 31, 2012, 05:28 PM
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Post Falls, ID United States
Joined Feb 2004
4,517 Posts
I changed it to pin drive on the VMX to get rid of the set screw and related issues. It works great and the reliability so far has been perfect. We have abused the bikes with zero failures from the pin or shaft.
I would imagine this aftermarket sprocket should see the same results.

If you think your chain is stretched first check the rear axle and swing arm shaft. If they are bent the chain tension will slacken making you think the chain has stretched. These simple chains have a higher tensile strength than these bikes can produce so usually its worn sprockets or bent shafts to look out for.
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