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Tools & Maintenance    Frame & Fork Tools

Park Tool DAG-2 Derailleur Alignment Gauge

The Park DAG-2 is an updated version of the popular DAG-1. There are a multitude of ways in which a derailleur hanger can get bent out of alignment. A bent derailleur hanger can be the root cause of many problems like poor shifting, drivetrain noise, and difficult rear derailleur adjustment. The Park DAG-2 provides a perfect derailleur hanger alignment for exact shifting and a super-quiet drivetrain. This is a must-have tool for any serious mechanic. The new DAG-2 utilizes a longer measuring pointer, longer threaded stud and a longer, and has a narrower alignment boss to fit a wider variety of bikes.


  • Replaces DAG-1
  • Longer threaded stud
  • Longer measuring pointer
  • Fits a wide variety of bikes
  • Ensures precise alignment of derailleur hanger
  • $67.46
    Reg Price $74.95
    Item #: 524203
    Item is in stock