Derailleur Hangers

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What is a derailleur hanger? A very important part to the running of your drivetrain and rear mech/derailleur. Derailleur hangers act as a fail safe in the event of an impact to the rear derailleur. Designed to either bend or break away and not damage the frame. If frames had integrated hangers and a crash or impact caused significant damage, it’s game over. There are hundreds of different options across the bicycle brands of the world. Some brands having up to as many as thirty different hangers. SRAM has attempted to standardise derailleur hangers by offering an open mould option to brands called the UDH. This has been vastly accepted and means finding a hanger anywhere in the world should be much easier.