Alibaba.com offers 4 bike automatic derailleur products. About 25% of these are bicycle derailleur. A wide variety of bike automatic derailleur options are available to you, There are 4 bike automatic derailleur suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of bike automatic derailleur respectively. Bike automatic derailleur products are most popular in Western Europe, Southeast Asia, and South America. You can ensure product safety by selecting from certified suppliers, including 1 with ISO9001 certification.