

RAM Mounts Drill-Down Dashboard Mount with Backing Plate, C-Size, Short (RAM-101-B-225B2U) pairs any RAM holder or dock with a solid through-bolted dashboard installation. The kit combines two 63.5 mm round C-size (1.5") bases with the universal AMPS pattern, a short 90 mm double socket arm and a 53 × 66 mm steel backing plate with hardware that sits behind the dashboard or panel. The short arm keeps the device close and stable, while the rubber ball-and-socket joints damp shock and vibration in trucks, vans and work vehicles.
📦 What's in the box – RAM-101-B-225B2U
- 2 × round plate with C-size ball – Ø 63.5 mm, AMPS 4-hole (30 × 38 mm) and 3-hole 120° (Ø 46 mm) patterns
- Double socket arm (C size, short) – 90 mm overall, 64 mm socket to socket
- Steel backing plate – 53 × 66 mm, for through-bolted (drill-down) installation
- Mounting hardware – for the backing plate
💡 You might also consider a lockable Tab-Lock tablet cradle or a Tough-Tray laptop holder with the AMPS pattern, and a key-locking knob to deter theft.
Key Features
- Drill-down installation – the 53 × 66 mm steel backing plate sits behind the dashboard or panel and bolts to the round AMPS base for a solid through-bolted installation
- Patented ball-and-socket system – C-size (1.5") rubber balls adjust at both ends of the arm and damp shock and vibration
- Universal AMPS pattern – the Ø 63.5 mm round plate has the 4-hole AMPS (30 × 38 mm) and 3-hole 120° (Ø 46 mm) patterns used by most RAM and third-party cradles
- Short double socket arm – 90 mm overall, 64 mm socket to socket, with an easy-to-adjust knob
- Load capacity – 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use
- Durable construction – powder-coated marine-grade aluminium and steel, backed by RAM's lifetime warranty
Compatibility
- Cradles and devices with the AMPS 4-hole pattern (30 × 38 mm)
- Holders with the 3-hole 120° pattern (Ø 46 mm)
- All RAM C-size (1.5") ball bases, adapters and holders
Technical Specifications
| Part Number | RAM-101-B-225B2U |
|---|---|
| Product Type | Drill-down mount kit |
| Connection | RAM C-size ball (1.5"); AMPS 4-hole (30 × 38 mm); 3-hole 120° (Ø 46 mm) |
| Load Capacity | 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use |
| Material | Powder-coated marine-grade aluminium and steel |
| Dimensions | Arm 90 mm overall (64 mm socket to socket); overall height 133 mm; plates Ø 63.5 mm; backing plate 53 × 66 mm |
| Weight | 0.53 kg (1.16 lb) |
| Warranty | Lifetime warranty (RAM Mounts) |
| In the Box | 2 × round plate with C-size ball, double socket arm (C size, short), steel backing plate, mounting hardware |
More RAM cradles, ball bases and socket arms are waiting in our Mobile Terminal Accessories collection. Planning a vehicle or forklift installation, or ordering for a whole fleet? Contact us for project support and volume pricing.
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