If you have a M8 softail then this is the mount you need.
The light weight Aluminum housing completely encloses your digital gauge and creates a clean finished look. Mounts directly to the top of your DMR destroyer risers and any other riser with 4-1/4" top bolt pattern when you select DMR GAUGE MOUNT OPTION,  select Kraus Isolated Riser Top Cap if you're running KRAUS RISERS, or T-Bar & Riser Clamp option for guys running t-bars or round risers.
Light Weight Aluminum construction
Adjustable pitch
Multiple mounting options
Offered in Black Anodized or Machine finish
Fitment:
Softail Models 2018 and up with factory digital gauge:
Standard, Street Bob, FXDR, Breakout
All Harley Softail Models 2018 and up with the HD digital gauge listed below