The RAM® D Size Marine Electronics Drill-Down Mount (RAM-D-115-C) is a heavy-duty fishfinder mounting solution engineered for 9”–12” marine displays. Built with a 2.25” D size rubber ball system and a short double socket arm, this mount delivers maximum stability for high-end chartplotters and sonar units in demanding marine environments.
The 6.25" x 2" rectangular top plate features multiple pre-drilled hole patterns and is compatible with many popular fishfinder gimbal brackets. Designed for permanent drill-down installation, this mount is ideal for boat consoles, dashboards, and helm stations where strength and vibration resistance matter.
As an Authorized RAM Mounts Dealer, Gadget Mounts provides genuine RAM components backed by the manufacturer’s lifetime warranty.
Key Features:
• Heavy-Duty D Size (2.25”) Ball System – Designed for larger marine electronics with superior holding power
• Short Double Socket Arm – Compact 3.6” socket-to-socket length for reduced vibration and tighter installations
• Universal 6.25" x 2" Marine Plate – Multiple pre-drilled hole patterns for 9”-12” fishfinder gimbal brackets
• 3.68” Round Base with D Ball – Drill-down base for secure permanent installation
• Adjustable Viewing Angles – RAM ball-and-socket design allows smooth positioning and firm locking
• Marine-Grade Aluminum Construction – Corrosion-resistant for saltwater and freshwater environments
• Mounts Horizontally or Vertically – Flexible installation options
• Made in the USA – Backed by RAM Mounts’ lifetime warranty
Drill-down mounting hardware is not included due to varying installation surfaces.
Ideal Use Cases:
• Offshore and inshore fishing boats
• Center consoles and bass boats
• Garmin GPSMAP installations
• Lowrance HDS mounting setups
• Marine chartplotter upgrades
• Helm electronics installations
Compatibility:
This mount supports many 9”–12” marine electronics using gimbal brackets, including models from:
• Garmin GPSMAP series
• Lowrance HDS series
• Humminbird Helix series
• Simrad displays
Note: Some applications may require additional hole drilling depending on device bracket design. Refer to hole pattern drawing image in the listing.
Specifications:
Overall Height: 7.325”
Socket-To-Socket Length: 3.6”
Top Plate Size: 6.25” x 2”
Bottom Plate Diameter: 3.68”
Ball Size: D Size (2.25”)
Weight Capacity:
- Standard Use: 6 lbs
- Heavy-Duty Use: 5 lbs
Material: Marine-Grade Aluminum
Product Weight: 3.25 lbs
Hole Pattern: See Drawing Image
Installation Notes:
This is a drill-down mount. Installation hardware is not included because surface materials vary (fiberglass, aluminum, wood, composite, etc.). Use marine-grade stainless hardware appropriate for your surface.
Brand and Warranty
Brand: RAM Mounts
Part Number: RAM-D-115-C
Warranty: Manufacturer’s Lifetime Warranty
