Park Tool DAG-2.2
Best precision tool for home mechanics fixing shifting issues.
A critical tool for diagnosing and fixing poor shifting performance caused by bent derailleur hangers. It provides a simple, accurate way to align the hanger with the wheel, ensuring smooth gear changes and preventing drivetrain damage.
$93.95
at
Airpark Bike Co
More Derailleur Hanger Alignment Gauge options
Who it's for
- Home mechanics seeking a durable tool that lasts a lifetime
- Cyclists with a diverse collection of bikes in their garage
- Performance riders demanding crisp and reliable gear changes
Who should skip it
- Mobile mechanics or cyclists with limited workshop storage space
- Novice repairers who prefer simple, plug-and-play maintenance solutions
- Budget-conscious hobbyists who rarely experience bent derailleur hangers
Performance breakdown
Alignment Precision
The industry standard for achieving perfectly straight derailleur hangers every time.
Build Durability
Heavy-duty steel construction withstands years of daily shop abuse.
Ease of Use
Intuitive design makes complex drivetrain adjustments accessible for home mechanics.
Compatibility Range
Adjustable gauge fits almost any wheel size and hanger configuration.
Measurement Consistency
Provides reliable, repeatable readings regardless of the bike frame material.
Ergonomic Handling
Solid grip and smooth sliding mechanism ensure comfortable, controlled adjustments.
Key Specs
Weight
952.54 grams
Tool Type
Derailleur Alignment Gauge
Intended Use
Drivetrain maintenance and alignment
Component Compatibility
Derailleur Hangers
Know before you buy
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