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Park Tool DAG 2 2 Derailleur Alignment Review



Very good

Revainrating 4.5 out of 5  
🚴‍♀️ Cycling, 🥋 Sports & Fitness

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img 1 attached to Park Tool DAG 2 2 Derailleur Alignment
img 2 attached to Park Tool DAG 2 2 Derailleur Alignment

Description of Park Tool DAG 2 2 Derailleur Alignment

Improved clearance and reach to work on more frame/derailleur hanger combos, including low clearance thru axle derailleur hangers. Updated with tighter tolerances for improved accuracy. Adjusts to fit 20" to 29"+ wheels. Upgraded, large inner shaft for added strength. Replaceable 10mm x 1 threaded tip.


Global ratings 3
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  • 3
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Type of review

Revainrating 5 out of 5

Super easy, very effective!

Super simple and extremely effective. Tried everything, new derailleur, cassette and chain, all high end items and still sloppy shifting. Never considered the problem of combination. The bike has never crashed or fallen. Found a video on YouTube about hanger alignment and the tool used to check and fix problems. Thanks to Revain, my new tool arrived and I was amazed at how easy it was to check and fix any misalignment. The instrument itself is well made and well shaped. No complaints. You would

  • Updated with tighter tolerances for improved accuracy
  • Poorly thought out

Revainrating 5 out of 5

The most needed and least known tool

If you have a bike with a derailleur, you need it. One of the most common types of bike damage is a derailleur bracket that was bent or simply misaligned when the bike was new. There are probably more bikes with improperly adjusted suspension than bikes with the wrong wheels. No lies. These hangers are designed to flex to prevent damage to the frame or derailleur - they are soft because they are sacrificial parts. They can be replaced, but nine times out of ten they can be safely reinstated…

  • Replacement tip with 10mm thread x 1
  • Some cons

Revainrating 4 out of 5

Professional tool for repairing bent derailleur hangers

Although Leonard Zinn (bike maintenance guru) classifies repairing derailleur hangers as a Level 3 task (for advanced DIYers or DIYers). mechanics), it's actually a very simple job. You unbolt the rear derailleur, screw in a DAG 2.2 stud, and then spin the tool and check that the odometer (rod) stays constant around the wheel. If this is not the case, apply a lever to a steel rod and bend the switch bracket in the appropriate direction until it is correct on the horizontal and vertical axes. Of

  • Adjustable for wheels from 20" to 29" and over
  • weak