As of a few weeks ago, Speedway is selling exactly the same gears as Macks and Joblot, the Italian made ones. I have found some variation in the pinion diameter, but nothing that can't be easily fixed. I'm not defending Speedways Chinese tendacys but I know the gears they are selling at the moment are decent and I haven't had any problems with any I've put in, at least two dozen sets in the last year or so alone. I save good original gears but really don't see any advantage to using them, only price, as the factory gears are usually readily available and cheap. As noted above, there are variations on the theme so just get the right gears for whatever rear you are using. One other comment, I prefer the late solid steel shaft to the tapered tube type. They run better without any balance problems, are easier to shorten, and have the benefit of the center bearing. Banjos are totally reliable rears as long as the bearings and races are in excellent condition. Axles and keys that are in good shape do not screw up and they are quiet! They are also super easy to work on.