Currently, we don't offer any air gauge options for the Softail models. 

Generally we recommend customers inquiring about gauges check into either Autometer or Dakota Digital as they offer numerous replacement gauges and mounting options. If a gauge is purchased from either of these companies, you will need a 5/32" air fitting, air line, and Y-fitting in order to connect the gauge to the rest of your air system. 

The necessary fittings and air line can be purchased from our Products page.