A misaligned derailleur hanger is an often-overlooked cause of poor shifting performance. We'll show you how to diagnose and repair your hanger using the Park Tool DAG-2.2 Derailleur Hanger Alignment Gauge.

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See all our derailleur videos in our Derailleurs & Shifting playlist ▶︎    • Repair Help: Derailleurs & Shifting  

Video contents:
00:00 Preliminary info
03:11 Hanger Alignment

➤ Tools & materials used:
• DAG-2.2 Derailleur Hanger Alignment Gauge - http://www.parktool.com/product/derai...
• PRS-3.2-2 Deluxe Single Arm Repair Stand - http://www.parktool.com/product/singl...

For a text-based walkthrough of this process: http://www.parktool.com/blog/repair-h...

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➤ About Park Tool:
Since our founding in 1963, Park Tool has been the leading name in bicycle tools. Our YouTube channel is an extension of our mission to be the ultimate resource for mechanics and riders of all skill levels. Here you will find comprehensive repair help tutorials for a wide range of components and processes, as well as troubleshooting guides, tips and tricks, and information on the latest Park Tool products.

➤ More Derailleur Repair Help:
• How a Front Derailleur Works ▶︎    • How a Front Derailleur Works  
• How a Rear Derailleur Works ▶︎    • How a Rear Derailleur Works  
• How to Adjust a Front Derailleur ▶︎    • How to Adjust a Front Derailleur  
• How to Adjust a Rear Derailleur ▶︎    • How to Adjust a Rear Derailleur – Lim...  
• Front Derailleur - Advanced Troubleshooting ▶︎    • Front Derailleur - Advanced Troublesh...  
• Rear Derailleur - Advanced Troubleshooting ▶︎    • Rear Derailleur - Advanced Troublesho...