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Hi Stephan,

My rails are still good but it has only been a short time. I can not say if these are any good over a long period of time. So far no rust and no corrosion, they are quieter than the original HEVO bearings but I don't know if original rails would be quieter.

I don't know how much more original rails are but if it isn't a huge difference I would probably go with the originals if you are concerned about quality. I assume you also get some warranty on the originals.