Description
Park Tool USA DAG-2.2 Derailleur Alignment Gauge is a professional-grade addition to any collection of bike tools, designed to measure and straighten bent rear derailleur hangers for cleaner shifting. This precision gauge fits virtually all derailleur-equipped bicycles and is ideal for home mechanics, race support, and shop-level frame tools work.
- DAG-2.2 is the current Park Tool model, replacing the older DAG-2 derailleur hanger gauge.
- Compatible with derailleur-equipped bikes using wheel sizes from 16 inch to 29+ (ISO/ETRTO 317 to 630+).
- Designed to fit most frame and hanger combinations, including many low-clearance thru-axle derailleur hangers.
- An excellent choice when you need a derailleur alignment gauge replacement for worn, outdated, or less precise shop tools.
The park tool usa dag-. derailleur alignment gauge features a refined head design for added strength and improved precision, along with a longer, narrower replaceable threaded tip that reaches tight hanger areas more easily. Overall length is approximately 405 mm (16 inches), and tool weight is about 937 g (33 oz.), giving it a solid, stable feel during alignment checks. This is a genuine Park Tool shop instrument, not a generic aftermarket copy, and it is best suited for users comfortable with basic derailleur service. If you need a dependable dag-. derailleur alignment gauge replacement, this model delivers the accuracy needed to diagnose skipping, poor indexing, and inconsistent rear shifting.
OEM-quality Park Tool construction with straightforward DIY use and trusted shop accuracy. Ships same day from our warehouse.
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