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Park Tool DAG-2.2 Derailleur Alignment Gauge
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Park Tool DAG-2.2 Derailleur Alignment Gauge

Mfg PartNum:DAG-2.2
$79.95
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DAG-2.2 Derailleur Alignment Gauge

Park Tool's latest version of the derailleur alignment guide is stronger, more accurate, and fits a wider range of wheel sizes than ever. The DAG-2.2 measures derailleur hangers than can be used to straighten a misaligned hanger until it measures perfectly, letting your rear derailleur shift accurately again.

Features:

  • Adjusts to fit 20" - 29" wheels.
  • Made from heavy-gauge, chrome-plated steel with an upgraded inner shaft for added strength.
  • Replaceable threaded tip.
  • Tighter tolerances over DAG-2.
  • Improved clearance and reach over DAG-2 to fit more frame/hanger combos including low-clearance thru-axle derailleur hangers.

    B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

  • Mfg PartNum: DAG-2.2 

    Ordered by Most Relevant First
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    Reviewed 9/5/2020
    by Steve F.
    Saugus, MA
    Overall Rating
    Perfects your shifting.

    After months of wondering why my bike would not shift into the hardest gear it finally occurred to me that when I dumped my bike on an icy patch over the Winter it had bent my derailleur hanger. This tool was a little tricky to use but once you get it right your shifting will be like new, I�m very glad I bought it.

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    Reviewed 6/27/2017
    by Velocio
    Cycling Enthusiast
    Des Moines, Iowa
    Value Rating
    Overall Rating
    3 of 3 customers found this review helpful.
    problem solved

    my touring bike lives a tough life on the road, been dumped on the derailleur side 3 or 4 times. Some gears didn't shift correctly or stay in gear ... the bike shop said, well you've got 30,000 plus miles.... new cassettes, chains, and rings didn't clear the problem, didn't really look out of alignment...., bet I was 12-15 degrees off. re aligned the drop out, gee, the bike shifts better than when new, runs quiet. I'll check my other bikes, like I said, problem solved.... Velocio

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    Reviewed 4/6/2017
    by BikeLA
    Cycling Enthusiast
    Los Angeles, CA
    Value Rating
    Overall Rating
    2 of 2 customers found this review helpful.
    When your derailleur is out of alignment, you need this tool

    I was struggling to adjust the rear derailleur on one of my bikes to get clean shifts across the whole range, and realized that the derailleur was not looking properly aligned. The DAG 2.2 confirmed my suspicions, and allowed me to coax the hanger back into alignment. Problem solved. I checked my other bikes, and ended up adjusting another as well.

    The tool itself is functional, rather than elegant, but it gets the job done at a decent price.

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    Reviewed 6/28/2018
    by Ol'' Gal triker
    Cycling Enthusiast
    Arizona
    Value Rating
    Overall Rating
    1 of 1 customers found this review helpful.
    How did I live without this?

    I've been riding various bikes for over 50 years, but never realized how much derailleur misalignment effected shifting. Once I read online and saw the videos, I had to have this tool. What a difference it made in the shifting on my recumbent tadpole trike! It'll pay for itself quickly in saved service trips to the LBS and trying to fix problems by buying new (unneeded) drivetrain parts. Now I'm going to check derailleur alignment every so often and offer to check my friends' bikes. Wonderful, well made tool! Typical Parks high quality, and they have many good videos on YouTube to walk you through doing your own repairs.

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    Reviewed 6/15/2018
    by Jim
    Issaquah
    Overall Rating
    Rarely needed but great to have

    This is one of those tools you might not need often, but indispensible when you do. Solved a pesky shifting problem on a mtn bike.

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    Reviewed 12/26/2017
    by Itsnotyou
    So. California
    Overall Rating
    1 of 1 customers found this review helpful.
    Great tool

    Was having shifting problems and could not get them corrected. After being told about hanger alignment i purchased the DAG 2.2. I found the hanger out of alignment. Aligned my hanger and readjusted the derailleur then my shifting problems went away.

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    Reviewed 12/21/2017
    by Anonymous
    Cycling Enthusiast
    Malibu, CA
    Value Rating
    Overall Rating
    1 of 1 customers found this review helpful.
    A great tool at a reasonable price.

    Sturdy tool that does exactly what it's intended to do. But go easy, lots of leverage can make it easy to break a badly bent hanger.

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    Reviewed 12/7/2017
    by BNystrom
    Nashua, NH
    Value Rating
    Overall Rating
    A quality tool, as you would expect from Park

    The differences between this and the original DAG that I've owned for decades are not huge. In fact. I made an extension for the old tool that duplicates most of the functionality of the new one. The DAG-2.2 does seem a bit tighter and I'm happy with it, but the difference is subtle. If I hadn't needed a second tool, I would have been perfectly happy with the modified DAG.

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    Reviewed 10/1/2020
    by CE
    Cycling Enthusiast
    Washington, DC
    Overall Rating
    Saves time!

    This tool ensures derailleur hanger is aligned prior to making adjustments, so you don't waste time adjusting a derailleur that visually looks straight, but isn't...

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    Reviewed 9/22/2020
    by Gary
    Cycling Enthusiast
    Portland, Oregon
    Overall Rating
    Well Made, Easy to Use, and It Pays for Itself

    Ride enough, and sooner or later, your derailleur hanger will become misaligned. And when it does, shifting suffers. You could take your bike to the shop and pay a mechanic $35+ to realign it, or you can pick up this tool and do it yourself in a matter of minutes. It's simple to use, and Park Tool has a great You Tube video that shows you how to do it right. Two realignments and the tool has paid for itself. Like all Park Tools, this alignment gauge is well made and will last. It's a solid investment for anyone who enjoys working on their own bikes

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    Reviewed 9/4/2020
    by David
    Cycling Enthusiast
    Elk Grove, CA
    Overall Rating
    Outstanding quality, works great!

    Only need this once in a great while but its great to have, 15 min job, prefect alignment!

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    Reviewed 4/27/2017
    by C.B.
    Daily Commuter
    Sheattle
    Overall Rating
    2 of 2 customers found this review helpful.
    Another mandatory tool if you want to maintain your bicycles yourself.

    Good tool. Well built and very sturdy. With thinner rear cassette spacing and lighter weight drivetrains, this is just a must have tool for anyone who does their own maintenance. Park makes good quality tools at a reasonable price.

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    Reviewed 4/1/2019
    by Anonymous
    Cycling Enthusiast
    Overall Rating
    Great tool to have

    I was having issues with my rear derailleur shifting correctly and this tool got it straightened it quickly!

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    Reviewed 11/1/2018
    by Dsquared
    Cycling Enthusiast
    Overall Rating
    1 of 1 customers found this review helpful.
    Great tool to have

    I keep my bikes clean and do regular maintenance on the drivetrain. I'm careful that I don't lean the bikes on the derailleur side. That being said, for some unknown reason, I've bent the derailleur hanger 3 times this year. At $30 a pop at the bike shop to straightened the hanger, it was a no-brainer to invest in this tool. The Park Tool Derailleur alignment tool is extremely easy to use. I was able to straightened the hanger in less than 10 minutes. I recommend this tool. It has paid for itself already this year.

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