

RAM Mounts Ball Base with 1.5 × 4.5" 4-Hole Pattern (RAM-D-202U-25) is a 51 × 127 mm (2 × 5") rectangular aluminium plate with a D-size 2.25" (57 mm) rubber ball that fits any RAM D-size double socket arm. Its four holes are spaced 38 × 114 mm (1.5 × 4.5") centre to centre, ready for drill-down installation on flat surfaces or on devices and brackets with the same pattern. Powder-coated marine-grade aluminium keeps it durable in vehicles, on equipment and outdoors.
📦 What's in the box – RAM-D-202U-25
- Ball Base with 1.5 × 4.5" 4-Hole Pattern – with D-size 2.25" rubber ball
💡 To get started, you might also consider a short D-size double socket arm and a ball plate for the device side, such as the D-size VESA 75 × 75 plate or the D-size round AMPS plate.
Key Features
- Rectangular plate – 51 × 127 mm (2 × 5") with a 4-hole pattern of 38 × 114 mm (1.5 × 4.5") centre to centre
- D-size ball – 2.25" (57 mm) rubber ball fits any RAM D-size double socket arm; the ball-and-socket joint allows near-infinite adjustment
- Load rating – 6 lb (2.7 kg) standard use, 5 lb (2.3 kg) heavy-duty use
- Rugged build – powder-coated marine-grade aluminium, backed by RAM's lifetime warranty
Compatibility
- Devices and brackets with a 38 × 114 mm (1.5 × 4.5") 4-hole pattern
- Flat surfaces for drill-down installation
- All RAM D-size (2.25") double socket arms and D-size ball components
Technical Specifications
| Part Number | RAM-D-202U-25 |
|---|---|
| Product Type | Rectangular ball base plate |
| Connection | RAM D-size ball, 2.25" (57 mm) |
| Hole Pattern | 4 holes, 38 × 114 mm (1.5 × 4.5") centre to centre |
| Plate Size | 51 × 127 mm (2 × 5") |
| Load Rating | 6 lb (2.7 kg) standard use, 5 lb (2.3 kg) heavy-duty use |
| Material | Powder-coated marine-grade aluminium |
| Weight | 0.27 kg (0.6 lb) |
| Warranty | Lifetime warranty (RAM Mounts) |
| In the Box | Ball Base with 1.5 × 4.5" 4-Hole Pattern |
Looking for a device to mount? Browse our Vehicle Mount Terminals range. Planning a vehicle or forklift installation, or ordering for a whole fleet? Contact us for project support and volume pricing.
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