Derailleur Arm – the arm which extends through the rear derailleur, with pulleys to feed the chain by means of. The derailleur arm is spring-loaded to get rid of slack within the chain when utilizing more compact gears. Enroll right now to have special discounts and content, only for VIP https://bike-engine-guard16924.blogzag.com/78604806/facts-about-bike-part-names-diagram-revealed