The Park Tool DAG-3 Derailleur Hanger Alignment Gauge is a reliable tool designed to keep your bike’s drivetrain in correct alignment. With its precise measurement capabilities, it ensures that your derailleur hanger is properly aligned, resulting in smooth shifting and improved overall performance. The DAG-3 is compatible with a wide range of wheel sizes, from 16″ to 29″+, making it suitable for various bike types. It features a low-profile head that fits low clearance thru-axle derailleur hangers and Shimano® Direct Mount hangers, providing versatility and convenience. Additionally, the M10 threaded tip is replaceable, ensuring long-term durability and functionality.
Benefits:
- Ensures proper alignment of the derailleur hanger for optimal drivetrain performance
- Compatible with a wide range of wheel sizes, from 16″ to 29″+
- Low-profile head fits low clearance thru-axle derailleur hangers and Shimano® Direct Mount hangers
- Replaceable M10 threaded tip for long-lasting use
- Helps maintain smooth shifting and extends the lifespan of drivetrain components
Specifications:
| Length | 16.5” (420mm) |
| Weight | 22.75 oz. (645g) |
| Compatibility | 16″ to 29″+ wheels (ISO/ETRTO rim sizes from 317 to 630+) |
*Note: An alignment gauge is essential for diagnosing and repairing bent or misaligned derailleur hangers, often the source of shifting problems. The DAG-3 features an all-new design, engineered and built to be light, accurate and versatile. The sliding indicator can measure derailleur hanger alignment against bicycle rims of any size, and rotates out of the way to clear seat stays, racks, and other obstacles, allowing 360 degree measurement. The long, precision-extruded aluminum body is built to exacting tolerances and provides ample leverage for making adjustments.
