Park Tool DAG-2.2 Derailleur Alignment Gauge
Best essential tool for cyclists troubleshooting persistent shifting issues.
This is the definitive fix for the most common cause of poor shifting. While it requires a bit of patience to master the measurement process, it turns a frustrating mechanical mystery into a straightforward, professional-grade adjustment.
$83.99
at
Plenty of Bikes
More Derailleur Hanger Alignment Gauge options
Who it's for
- Professional mechanics needing precise alignment for modern high-speed drivetrains
- Busy shop technicians requiring tools that withstand daily, heavy-duty use
- Versatile mechanics servicing a wide variety of wheel and axle standards
Who should skip it
- Casual home mechanics on a budget looking for affordable maintenance tools
- Mobile mechanics or hobbyists with limited workshop storage space
- Novice riders lacking the experience for precise, manual mechanical adjustments
Performance breakdown
Build Durability
Chrome-plated steel construction ensures this tool survives years of workshop abuse.
Frame Compatibility
Extended reach and clearance handle modern thru-axle frames with ease.
Alignment Precision
Provides the exacting measurements required for crisp, reliable gear indexing.
Versatility
Adapts seamlessly to wheel sizes ranging from 20 to 29 inches.
Ease of Use
Intuitive design makes complex hanger adjustments accessible for home mechanics.
Serviceability
Replaceable threaded tip extends the functional lifespan of the entire unit.
Key Specs
Material
Chrome plated steel
Wheel size compatibility
20 inch to 29 inch
Threaded tip
Replaceable 10 mm x 1
Inner shaft
Upgraded, large for added strength
Clearance
Improved for more frame/hanger combos
Thru-axle compatibility
Works on low clearance hangers
Number of functions
2
Number of pieces
1
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Ask Metto anything about the Park Tool DAG-2.2 Derailleur Alignment Gauge before you decide.
