Park Tool DAG-2 Derailleur Hanger Alignment Tool

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Estimated availability is 5th Oct 2020

Park Tool Derailleur Alignment Tool. We have found this one to be the best, and it comes at a fair price.

The DAG-2.2 is an indispensable shop tool that can be used to both measure and straighten misaligned derailleur hangers solving a high percentage of shifting problems

  • Gauge bar made of heavy gauge, chrome plated steel
  • Adjusts to fit 20” to 29”+ wheels
  • Replaceable threaded tip
  • Upgraded, large inner shaft for added strength
  • Tighter tolerances for improved accuracy over previous models
  • Improved clearance and reach to fit more frame/hanger combos including low clearance thru axle derailleur hangers


  • 4
    Great tool

    Posted by Rob on 20th Sep 2018

    This is a simple, sturdy tool. It seems a bit pricey for what it does, but is reasonably priced relative to other manufacturers. Park Tool tends to be very reliable and long lasting.