Park Tool DAG-3 - Derailleur Hanger Alignment Gauge
Park Tool DAG-3 - Derailleur Hanger Alignment Gauge
- 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 being compatible with 16 to 29+ wheels, whilst rotating out of the way to clear seat stays, racks, and other obstacles, allowing 360 degree measurement
- The long, precision-extruded aluminium body is built to exacting tolerances and provides ample leverage for making adjustments
- Thanks to the low-profile head, it fits low clearance thru-axle derailleur hangers and Shimano® Direct Mount hangers
- Made in the USA and covered by Park Tool's legendary limited lifetime warranty
Home Delivery
Home Delivery
All orders are sent on a fully tracked service with either DPD or Royal Mail depending on your order selection.
DPD Pickup From Shop
DPD Pickup From Shop
At checkout select your nearest DPD store or access point for fast delivery that will be ready for collection at a convenient time for you.
Simple 60 Day Returns
Simple 60 Day Returns
Use our on-site easy returns portal to return or exchange your order. We understand sometimes buying the correct part is not straight-forward.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

