Chain length sizing for bicycles with derailleurs

Optimal chain length for bicycles with a derailleur (multi-geared bicycles)

Updated: 16/11/2018. It is often asked: what is an optimal chain length for a bicycle with derailleurs? Should a new chain be shortened and how much? That is answered in this post. For single speed bicycles (or bikes with internal gear hubs), see: Determining optimal single speed chain length.   1. Bicycle drive chain length … Read more Chain length sizing for bicycles with derailleurs