Description

Park Tool DAG-2.2 Derailleur Hanger Alignment Tool
Category: Maintenance
Subcategory: Transmission Tools
Achieve flawless shifting and restore your bicycle´s transmission to peak performance with the Park Tool DAG-2.2 Derailleur Hanger Alignment Tool. If you´re struggling with inconsistent gear changes, a noisy drivetrain, or indexing issues that barrel adjustments just can´t fix, the problem often lies with a misaligned derailleur hanger. 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 with professional-grade precision.
A straight derailleur hanger is the foundation of a crisp and reliable shifting system. Even a slight bend, often invisible to the naked eye, can cause the derailleur to sit at an angle relative to the frame. This misalignment prevents the guide pulley from tracking perfectly parallel with the cogs on your cassettes, leading to hesitation, skipping, and frustrating “ghost shifting.” The DAG-2.2 allows you to accurately diagnose and correct this critical alignment, ensuring your rear derailleur can move precisely from one cog to the next.
Designed for the rigors of daily shop use yet essential for the dedicated home mechanic, the DAG-2.2 is the industry standard for drivetrain accuracy. Its robust construction and intelligent design provide the leverage and precision needed to gently and safely bring a bent hanger back into its correct orientation. By referencing the wheel rim, the tool provides a consistent and accurate plane for measurement, allowing you to make confident adjustments. This process revitalizes your bike´s shifting, providing the immediate, quiet, and decisive gear changes you expect. Its superior design offers exceptional clearance and reach, making it compatible with a vast array of modern frame designs and hanger configurations.
Features:
* Built for durability and precision with a gauge bar made of heavy-gauge, chrome-plated steel that resists flex during use.
* Offers exceptional versatility, with a sliding arm that adjusts to fit wheel sizes from 20 inches to 29 inches and larger.
* Features a replaceable threaded tip, ensuring a long service life and making it a lasting investment for your workshop.
* Engineered with an upgraded large inner shaft, providing enhanced strength for handling even the most stubborn hangers without compromise.
* Manufactured with tighter tolerances for improved accuracy, delivering the precise measurements required for perfect alignment.
* Boasts improved clearance and reach to fit more frame and hanger combinations, including low-clearance thru-axle derailleur hangers that challenge other tools.
* Provides near-universal compatibility with virtually all derailleur-equipped bicycles, including those using Shimano® Direct Mount hangers.
Technical Specifications:
* Length: 16 inches (41cm)
* Wheel Compatibility: 20″ to 29″+
* Frame Compatibility: Quick Release and Thru-Axle (including low clearance designs)
* Hanger Compatibility: Standard Mount, Shimano® Direct Mount