The Giant MY17 TCR and Defy Advanced Pro Disc derailleur hanger is a high-precision replacement component engineered specifically for Giant’s most demanding road cyclists. This specialized dropout serves as the critical mounting point for your rear derailleur, directly influencing the quality and reliability of your shifting performance across the entire gear range. This derailleur hanger is specifically designed for the 2017 model year Giant frames, providing perfect compatibility with both the TCR Advanced Pro Disc and Defy Advanced Pro Disc models.






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