While OE parts tend to be higher quality, many of us have had OE parts fail too. I have used the knockoff versions and I have rebuilt the stock ones. I had one knockoff fail out of the box and the ebay seller sent me another and it has been working fine for >5yrs. I chose to spend roughly 20% of OE prices and that suits my purpose. For many people this is an expensive hobby especially if you have multiple kids in college that also ride dirtbikes. It is all about personal choice!
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