It's lighter, skinnier, weaker, not for off-road use and big riders off the saddle standing on pedals, concentrating 3x their weight and threatening to rip out the end of the crank at the pedal hole. It's for road riding. where you'll certainly stand on the pedals when you're climbing off the saddle and airing out yourr crotch on smooth gradual descents, but not while you're riding big bumps, and you aren't going to ride off ledges or do anything of the sort. The current all-purpose Silver crank is lighter than it looks, thanks to a scooped-out back of the arm. It's about a cm wider than this one. The original passes the ISO Mtn Bike test, which assumes a certain amount of weight and reckless riding. This one probably won't, but it will pass (it shall be tested and we'll change it if doesn't), the ISO Road test. It's a 110/74 bolt pattern, same as now, same as the XD-2, same as the mtb cranks of the '80s and probably '90s, too. Rings widely available, but local bike shops probably won't stock them. They know where they can get them, lots of sources.