Pretty much every current mountain bike derailleur I own has scrapes on its cage around ... of a derailleur cage that got ...

Designed as a way for their engineers to stretch their mental muscles, the gearboxes were only used in bike races and seen at a few trade shows. In 2004, the third gen “derailleur in a box ...

"The GD8 represents a game-changing step forward in e-bike drivetrain technology, eliminating derailleur systems and prioritizing durability, performance, and long-term value." The pilot ...