Park Tool DAG-2.2 professional derailleur hanger alignment tool

Customer reviews

Average rating: 5 out of 5 5/5

Based on 23 reviews

• 5 ★ 5 stars 23
• 4 ★ 4 stars 0
• 3 ★ 3 stars 0
• 2 ★ 2 stars 0
• 1 ★ 1 star 0

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Reviews subject to control

• Reviews submitted are subject to control.
• Reviews are listed in descending chronological order.
• Reviews were submitted without any reward.
• The maximum publication period for reviews is 30 days.
• The maximum retention period for reviews corresponds to the period of the merchant's contract.

• Rated 5 out of 5 Yvan E.

  Published Feb 01, 2026 at 05:58 pm · Order date: Jan 21, 2026 · (Translated review)

  Good tool

• Rated 5 out of 5 David M.

  Published Dec 22, 2025 at 06:28 am · Order date: Dec 11, 2025 · (Translated review)

  A longer lever arm would have been ideal

• Rated 5 out of 5 Antoine L.

  Published Nov 15, 2024 at 06:53 pm · (Translated review)

  It helped me realign everything, I discovered this tool and I'm happy with it

• Rated 5 out of 5 Jacques B.

  Published Nov 08, 2024 at 08:53 am · (Translated review)

  Easy to use, essential for aligning the rear derailleur after the slightest shock, as soon as the noise of misalignment is heard. And with electric and 11/12 speed, making adjustments requires great precision.

• Rated 5 out of 5 Daniel P.

  Published Oct 26, 2024 at 05:10 pm · (Translated review)

  A tool that should have a good place among a cyclist's equipment. Easy to use, effective if you follow the instructions well. To recommend.

• Rated 5 out of 5 Marc B.

  Published Aug 15, 2023 at 11:41 am · (Translated review)

  Essential for perfectly adjusting your transmission and with an adapter, it can also serve as a tool for checking the height of road hoods. The best value for this type of tool.

• Rated 5 out of 5 Vincent B.

  Published Mar 01, 2023 at 10:06 am · (Translated review)

  Very good tool for checking the alignment of the derailleur hanger and straightening it if necessary. Easy to use.

• Rated 5 out of 5 Stéphane C.

  Published Jul 04, 2022 at 12:36 pm · (Translated review)

  Essential, especially with children!! Easy to use

• Rated 5 out of 5 Pedro H.

  Published Feb 15, 2022 at 01:05 am · (Translated review)

  Very well-built tool and helps a lot to keep the derailleur hanger straight.

• Rated 5 out of 5 Jean Pierre L.

  Published Nov 17, 2020 at 08:40 pm · (Translated review)

  Essential tool for proper positioning and use of the rear derailleur, and also very easy to use. Just ordered, already delivered. Super thanks to Matériel vélo

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10 reviews shown out of 23