hit or miss. I bought the 6 over kit for the topend of mine, runs great. Pistons, rings, weighed the same. cyliders were good.
Other than parts like that, most of it is taiwanese. The pamco kits are solid, the rubber used for carb boots are crap, dont buy carb kits there either. they say mikuni , and even have the square in a square, but they are not mik's. Goto niche cycle. best resource for carb parts ive seen so far.
These parts will not score big on concourse, but will get you down the road with effort.