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I totally agree with OEM parts being the better option, but I understand that you could sink 1000.00 in a hurry buying OEM engine parts, I always read all the reviews, it has a good rating ,I have used Niche stuff, I think they are one of the best aftermarket brands out there, but I have never used their engine parts. The only rating that disturbs me is one guy said they were .001 off, if I was doing this I would have everything ready before I ordered, get right on it and see if everything fits right so if there are problems you are within he return window. Are you having trouble with your recent purchase?

I would seriously doubt it. Niche makes some pretty junk Chinese stuff. I've had decent luck with their cylinders but their heads are junk, pistons are absolute garbage, etc. It's hard to beat OEM even if they are sometimes flawed. Or HotCams or Webb if either make a cam for that.