Yes i am aware.... But i'm afraid i don't have the tools to install The crankset, Bottom Bracket, and Cog. And, i also do not know what tools are needed for installing the crankset and bottom bracket.Hahaha. Well if i were to get the Sram i would need to buy a a new cog. So i guess i will buy the all city 612 crankset. still on edge, but i will think it out by the time i have all the money needed.