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PARK TOOL

PARK TOOL DAG-3 Derailleur Hanger Alignment Gauge

Manufacturer reference: DAG-3
An alignment gauge is essential for diagnosing and straightening a bent or misaligned derailleur hanger, a common cause of shifting problems. The PARK TOOL... Read more

Recommended price* : 219,50 €

Regular price 197,90 €
Regular price Sale price 197,90 €
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Description

An alignment gauge is essential for diagnosing and straightening a bent or misaligned derailleur hanger, a common cause of shifting problems. The PARK TOOL DAG-3 Derailleur Hanger Alignment Gauge has an entirely new design intended to be lightweight, precise and versatile.

Its sliding indicator measures hanger alignment against rims of all sizes and pivots out of the way of seatstays, racks and other obstructions, allowing measurements through 360 degrees. The long precision-extruded aluminium body is made to tight tolerances and provides excellent leverage for making corrections.

Compatible with wheels from 16" to 29"+ (ISO/ETRTO rim sizes 317 to 630+), the gauge has a replaceable M10 threaded tip and a low-profile head designed specifically for thru-axle derailleur hangers with limited clearance and Shimano® Direct Mount fittings.

Length: 420 mm; weight: 645 g.

Ref: 16148100022652

Technical information

Brand: Park Tool
Manufacturer's reference: DAG-3
Category: Bicycle tools - Derailleurs and drivetrain
Tool type: Derailleur hanger alignment gauge
Wheel compatibility: 16" to 29"+ (ISO/ETRTO 317 to 630+)
Threaded tip: M10, replaceable
Mounting compatibility: Low-clearance thru-axle hangers, Shimano Direct Mount fittings
Length: 420 mm
Weight: 645 g
Material: Precision-extruded aluminium body
Measurement: Sliding, pivoting indicator for 360° measurement
Made by: Park Tool, USA

Price information

*Recommended retail price from supplier in September 2026