Gear Mech Derailleur Hanger to fit Decathlon Rockrider Riverside BTwin B’Twin

High Quality Cast Mech Hanger to replace for Decathlon and Btwin Bicycles

Complete with fixing screws

 Fit the following Models....

Decathlon Rockrider
ST 520, ST 540
ST 900, 8.1 / 8.0 / 9.0 / 9.2 / 9.3 / 9.9
500S, 8.1 / 8.2 / 9.1 / 9.2​

Decathlon Riverside
500 / 900 / 920 E-ST 500

B'TWIN
various - check picture for exact match