ANY drum brake, will never be equal with a disc setup. But, they are able to stop any bike, if installed correctly, and given regular maintenance. Aftermarkets ones, depending on which ones you buy, can be good, or useless. The mini drums are mainly for looks. The full size ones, work as good as OEM, but again, it depends on the style riding you do. Not made for the drag strip. But for daily rides, at normal speeds, they work fine. Most people complain that they can't stop fast enough, but that is probably because they expect them to match a disc setup. Rears can easily lock the wheel, fronts, not unless you hit a grease spot in the road. If I was building a custom, I would stick with disc, if you are going for the retro look, and drive with some common sense, the drums will work just fine. Just remember, the drums are pretty much sealed, and need to be pulled and cleaned, scuff the drum and shoes, and they will work pretty good.