RAM RAMD-111U 2.25" Ball Standard Arm Mount Kit with 3.68" & 3-3/4" Bases & 11" x 3" Plate
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The Most Complete D-Series Large-Plate Kit — Two Bases Included
The RAM RAMD-111U is the flagship configuration of RAM's D-series large-plate mounting system. It includes a standard length 2.25" double socket arm, an extra-wide 11" x 3" rectangular plate, and two round bases — a 3.68" base and a 3-3/4" base — giving you the flexibility to choose the mounting footprint that best suits your installation without buying additional components.
Built for large, heavy marine electronics, the D-series 2.25" ball system delivers the stiffest, most rigid hold in the RAM lineup. The standard arm provides the most versatile reach for typical helm and console installs, and the 11" x 3" plate's multiple pre-drilled hole patterns cover the widest range of large-format device mounting configurations.
What's Included
- Standard length 2.25" double socket arm (D-series)
- 3.68" diameter round base with 2-hole (180°) and 3-hole (120°) mounting patterns
- 3-3/4" diameter round base
- 11" x 3" rectangular mounting plate with multiple pre-drilled device hole patterns
Key Features
- D-series 2.25" ball system — maximum rigidity for large, heavy displays
- Two bases included — choose the footprint that fits your mounting surface
- Standard arm length — the most versatile reach for most helm and console installs
- Extra-wide 11" x 3" plate fits large marine GPS, chartplotters, CB radios, ham radios, gimbal brackets, and more
- Near-infinite angle adjustment with rubber ball-and-socket technology
- Compatible with the RAM RAP-402U Cable Manager for 3.68" Round Base Plates for clean wiring through the 3.68" base
Choosing the Right Configuration
For a more compact, lower-profile install with a short arm, see the RAM RAMD-111UC Short Arm Kit. If you'd like this same kit with a Hi-Torq™ wrench included for easier tightening, see the RAM 2.25" Ball Mount with Hi-Torq™ Wrench. For the D-series arm or base as individual components, see the RAM RAMD-201U Standard Length Double Socket Arm and the RAM RAMD-202U 2.5" Round Base with 2.25" Ball.
Parts Desk Insights
Best use case: This is the kit to recommend when a customer is doing a serious large-display install and wants maximum flexibility — the two included bases mean they can choose the best footprint for their console without a separate order. The standard arm suits the majority of helm installs, and the 11" x 3" plate handles the widest range of large chartplotter and MFD mounting patterns. The D-series 2.25" ball gives the stiffest hold in the RAM lineup, which matters for large screens on boats that run in rough water or at speed. If the customer wants the same kit with a wrench for easier field tightening, point them to the Hi-Torq™ version. Pair with the RAM RAP-402U Cable Manager to route wiring cleanly through the 3.68" base.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.