Purchased Front 16T and Rear 37T to make it slightly lower geared. Steel at 37T would be reasonably heavy, so I was excited to go with DuraluminSprocket.
Gold "Classic" But it would have been nice if Fashion (Lol) I chose the Premium one because of the 20x Point reduction. I will leave the durability to other people's impressions.
I don't know if it was because of the rare 37T tooth count or because I asked for it during the hectic end-of-year period. I don't know if it's because of the number of teeth, or because I asked for it during the hectic end of the year season. Delivery time took about 3 weeks. (Initially, about 1 month) If you need it to attend Races and Events, you will need to order it well in advance.
So, when installing, Habit, or rather, Sprocket of XAM is (I've only used it for HONDA's SmallEngine Displacement Volume.) The hole size for the hub center and hub bolt may be a little too large, so if you install them properly, the drive chain may not be able to fit in the hub center. It would be better to be careful because it would be as if you are stretching one side.