Shimano began drastically changing the designs of its mountain bike rear derailleurs in 2007, moving the entire mechanism toward the rear of the bike in an effort to improve shifting performance and chain wrap on wider-range cassettes. That design quickly filtered out to Shimano’s entire mountain bike range, although there now looks to be a … Continued
Read the full article at There’s a flood of Direct Mount derailleur hangers at the Tour de France — but why? on Velo.