Product ID: 333222352882
Park
Tool DAG-2 Derailleur Alignment Gauge
Main view of The Park Tool DAG-2 Derailleur Alignment Gauge
Park Tool DAG-2 Derailleur Alignment Gauge view 4
Park Tool DAG-2 Derailleur Alignment Gauge view 4
Park Tool DAG-2 Derailleur Alignment Gauge view 4
Park Tool DAG-2 Derailleur Alignment Gauge view 4
  
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$66.95
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Found: 07-09-12
Expires: 05-31-13
video for the

Park Tool DAG-2 Derailleur Alignment Gauge
all about the

Park Tool DAG-2 Derailleur Alignment Gauge

The Park Tool DAG-2 features a heavy gauge steel construction with a durable chrome plating, this shop quality tool is built to last. The DAG-2 can help you with a variety of derailleur shifting issues most notably with index shifting systems. The tool threads directly into the frame's derailleur hanger, then you simply rotate to the 3, 6, 9 and 12 o'clock positions on the wheel taking note of and correcting any discrepancies in measurement.

  • Threads directly into derailleur hanger
  • Features new longer measuring pointer
  • Limited lifetime warranty
  • Made in the USA

Looking for a little more info on this product? Check out our blog post that we wrote up.
questions about the

Park Tool DAG-2 Derailleur Alignment Gauge

asked by: A Visitor
Is there a significant difference between the Park Tool DAG-2 and DAG-1? Which to buy?
answered by: mlewis
The DAG-2 is redesigned to fit a wider variety of bikes, and is currently the only model available from Park.
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reviews of the

Park Tool DAG-2 Derailleur Alignment Gauge

Just The Dirt
positive starpositive starpositive starpositive starhalf star
4.6 GEARS
18 reviews
LIKES
Simple to Use (14)
High Quality (13)
Made in the USA (12)
DISLIKES
WORKS FOR
Mountain Bikes (12)
Road Bikes (11)
Aluminum Frames (7)
New Frames (6)
Steel Frames (6)
Rusty Frames (3)
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positive starpositive starpositive starpositive starpositive star
5
GEARS
reviewed by: skyguy94
July 19, 2012
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
I hesitated to buy this due to the cost, but I picked up a 1977 Motobecane Mirage where the hanger was shoved into the spokes. I straightened it with a wrench and a bolt, but I just didn't get it quite straight enough for a 7x speed freewheel to shift properly.

It took me less than two minutes to get the hanger perfectly aligned with this tool. It is really well constructed and I'm sorry that I waited to buy it.

Yes, I would recomend this to a friend.

Likes: Simple to Use, High Quality

Works For: Road Bikes

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positive starpositive starpositive starpositive starpositive star
5
GEARS
reviewed by: brandonc204
April 07, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
Park Tool products are high quality. If you are buying this tool, you probably already know that. It's easy to use, and it comes with instructions that even an inebriated chimpanzee could understand. (Lots of pictures)

Now I don't have to take my bike to the shop everytime I bump my derailleur hanger!

Summed up: Perfect at doing what it was designed for.

Yes, I would recomend this to a friend.

Likes: Made in the USA, High Quality, Simple to Use

Works For: Road Bikes, Mountain Bikes, New Frames, Rusty Frames

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5
GEARS
reviewed by: A Visitor
June 13, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
Easy enough for even an untrained mechanic to use. Because it's Park, online resources are available to help you out. Fixed a badly out of alignment hanger in about 15 minutes.

Yes, I would recomend this to a friend.

Likes: Made in the USA, High Quality, Simple to Use

Works For: Road Bikes, Mountain Bikes

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4
GEARS
reviewed by: m27...@in....com
June 23, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
Since I am new to mountain biking, I know I am going to be bending the derailuer often not just this once. So, considering the LBS would charge me $40 the tool seemed like a good investment.
First time using this tool item and it worked well. I am sure as I need to use it, I will get more efficient.

Yes, I would recomend this to a friend.

Likes: Simple to Use

Works For: Mountain Bikes

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3
GEARS
reviewed by: A Visitor
August 22, 2010
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
I expected the threads to be more precisely made for the amount I paid for this. Isn't Park Tool supposed to be mean high quality? It still works though but each time I thread it on a hanger a small amount of metal is shaved off from the threads of the hanger. I try hard to make sure I'm not cross threading.

Works For: Mountain Bikes, Road Bikes

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5
GEARS
reviewed by: JRohland
January 07, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
Did a great job fixing the shifting problems on my Litespeed!

Summed up: Excellent product!

Yes, I would recomend this to a friend.

Likes: High Quality, Made in the USA

Works For: Road Bikes

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3
GEARS
reviewed by: roashru
June 24, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
I purchased the DAG-2 after figuring I dont have time to make a rear derailleur alignment tool. There are not any graduated markings on the tool so its not really a gauge.

Summed up: Works as intended.

Yes, I would recomend this to a friend.

Likes: Simple to Use

Works For: Aluminum Frames, Steel Frames

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5
GEARS
reviewed by: A Visitor
June 27, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
This tool is as important as hex keys. So simple yet so necessary. If you plan to have more than one geared bike in your garage and any of them get banged around, you will need this tool. That is, unless you like hauling your bikes to the shop after spending excess time becoming frustrated as you try to dial-in your derailleur adjustments and cable tension only to discover it was a bent hanger all-along.

Yes, I would recomend this to a friend.

Works For: Steel Frames, New Frames, Aluminum Frames

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4
GEARS
reviewed by: fr3d3ric
July 22, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
I like this tool. It simply works!

Yes, I would recomend this to a friend.

Likes: High Quality, Made in the USA, Simple to Use

Works For: Mountain Bikes, Aluminum Frames

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5
GEARS
reviewed by: A Visitor
July 28, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
Great tool, precise and simple to use.

Yes, I would recomend this to a friend.

Likes: Simple to Use, Made in the USA, High Quality

Works For: Mountain Bikes, Road Bikes, Aluminum Frames, New Frames, Steel Frames

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positive starpositive starpositive starpositive starpositive star
5
GEARS
reviewed by: A Visitor
August 21, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
Tree Fort had the best price & delivered the item quickly; great turn around time. Product works like a champ; I had an issue with a 2011 Ultegra drivetrain always making noise. This tool is simple to use, and very effective. The bike is shifting like it should now. I've also used it to check 6 other bikes & found none of them to be true (until now). I think this is a necessary tool in everyone's box, but most assuredly those of you who have a newer, and less forgiving 10spd cassette setup.

Yes, I would recomend this to a friend.

Likes: Simple to Use, Made in the USA, High Quality

Works For: Mountain Bikes, Road Bikes, Aluminum Frames, Steel Frames, New Frames, Rusty Frames

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positive starpositive starpositive starpositive starpositive star
5
GEARS
reviewed by: jdirtbag
August 27, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
Works just like Park says it will and is not a disappointing flimsy piece of crap that so many tools are these days. Paid for itself the first time I used it. I would definitly recommend this tool to mountain bikers who are serious about keeping their bikes in working order.

Yes, I would recomend this to a friend.

Likes: Simple to Use, Made in the USA, High Quality

Works For: Mountain Bikes, Road Bikes

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5
GEARS
reviewed by: gflemg
September 26, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
gets the job done easily. may save buying a new deraileur hangar. essential for bikes without replaceable derailleur hangar.

Yes, I would recomend this to a friend.

Likes: Simple to Use, Made in the USA, High Quality

Works For: Mountain Bikes, Road Bikes, Aluminum Frames, Steel Frames, New Frames, Rusty Frames

member review badge
positive starpositive starpositive starpositive starpositive star
5
GEARS
reviewed by: jhughes
December 11, 2011
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
I use this on a mountain carbon and alluminum frames with no issues. This is my favorite tool since I seem to hit my deraillures quite often.

frames used on.
2010 Rocky Mountain Vertex aluminum
2010 Specialized S-works carbon
2012 Specialized S-works carbon

I also want to say thanks to Tree Fork Bikes. Everytime I have called with questions they were nothing but nice and helpfull, never rushing to get me off the phone or rude.

thanks again.

Summed up: Great product great service.

Yes, I would recomend this to a friend.

Likes: Simple to Use, High Quality

Works For: Mountain Bikes

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4
GEARS
reviewed by: DanConover
February 01, 2012
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
A surprising number of the bikes that I used to see as a full-time mechanic came into the shop with their derailleur hangers in some varying degree of screwed-up-idness. Before I went to work in a shop I used to eyeball the bend from behind and do the best I could with my bare hands. It never really worked. This tool not only gives you the leverage to work easily, it checks your progress in two planes simultaneously. I used it daily as a pro mechanic, and even though it's a relatively expensive addition, it's something every home mechanic ought to have in their tool kit.

Yes, I would recomend this to a friend.

Likes: Made in the USA

Works For: Mountain Bikes, Road Bikes

guest review badge
positive starpositive starpositive starpositive starpositive star
5
GEARS
reviewed by: A Visitor
September 21, 2012
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
It paid for itself on the first use.

Yes, I would recomend this to a friend.

Likes: Simple to Use, High Quality, Made in the USA

guest review badge
positive starpositive starpositive starpositive starpositive star
5
GEARS
reviewed by: A Visitor
October 11, 2012
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
My son just started mountain biking, and he's always tweaking his derailleur hanger. I felt like I was bringing the bike over to the shop on a weekly basis, and got tired of it. Now, I can get his drive train back into tip top shape in a few minutes in my garage. This tool is very easy to use, and I've straightened his hanger a couple of times. His bike has never worked better.

Summed up: This is a great tool!

Yes, I would recomend this to a friend.

Likes: Simple to Use, High Quality, Made in the USA

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positive starpositive starpositive starpositive starpositive star
5
GEARS
reviewed by: A Visitor
January 27, 2013
Review of the Park Tool DAG-2 Derailleur Alignment Gauge:
This tool is worth its weight in gold. I bought it two weeks ago, and have already realigned four derailleur hangers (one aluminum mountain bike, one steel mountain bike, one aluminum cross bike, and one carbon road bike). This tool has already paid for itself.

My one desire is, I wish there was a better mechanism to hold the gauge rod in place (i.e., there are only two rubber o-rings).

Summed up: Great tool! Must have if you ride mountain bikes or cyclocross.

Yes, I would recomend this to a friend.

Likes: Simple to Use, High Quality, Made in the USA

Works For: Mountain Bikes, Road Bikes, Steel Frames, Aluminum Frames, New Frames

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