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GALLIUM PRO DISC 338A: 4.4. Rear Derailleur Hanger Adjustment
1. Select the correct rear derailleur hanger depending on the type of derailleur
that you have.
- Direct mount (15)
- Regular mount (1)
2. Make sure to align the rear derailleur hanger.
3. Use Derailleur Hanger Alignment Gauge like Park Tool Item #DAG-2.
For any assistance, visit Park Tool’s website:
www.parktool.com/product/derailleur-hanger-alignment-gauge-dag-2
15
1