

RAM Mounts RAM-A-CAN II Universal Cup Holder Base with Double Ball Mount (RAP-299-3-B-102U) turns a cup holder with an inside diameter of 65–89 mm (2.57"–3.5") into a drill-free mounting point. The RAM-A-CAN II base carries a composite B-size double socket arm (76 mm socket to socket) with two 62 × 33 mm diamond plates: one connects to the cup holder base, the other to any cradle with the industry-standard 2-hole AMPS pattern. Light, rugged high-strength composite for cars, vans, boats and side-by-sides.
📦 What's in the box – RAP-299-3-B-102U
- RAM-A-CAN II cup holder base – for cup holders 65–89 mm (RAP-299-3U)
- Composite double ball mount – medium B-size arm with two 62 × 33 mm diamond plates (RAP-B-102U)
- Assembly hardware – for assembling the components
💡 To get started, you might also consider a device holder with the 2-hole AMPS (diamond) pattern, such as the universal small-device holder with diamond pattern.
Key Features
- Cup holder mount – fits cup holders with 65–89 mm (2.57"–3.5") inside diameter; no drilling
- 2-hole AMPS diamond plates – two 62 × 33 mm plates with 48.6 mm hole spacing for RAM and third-party cradles
- Shock and vibration damping – the patented rubber ball-and-socket system cushions the mounted device
- Load rating – up to 2 lb (0.9 kg) in standard use and 1 lb (0.45 kg) in heavy-duty use; ideal for phones, GPS units, scanners and small tablets
- Lightweight composite – high-strength composite base, arm and plates
Compatibility
- Vehicle and boat cup holders with 65–89 mm (2.57"–3.5") inside diameter
- Device holders with the 2-hole AMPS pattern (48.6 mm hole spacing)
Technical Specifications
| Part Number | RAP-299-3-B-102U |
|---|---|
| Product Type | Mounting kit, B-size |
| Connection | B-size (1" / 25.4 mm) ball; 2 diamond plates 62 × 33 mm with 2-hole AMPS pattern (48.6 mm) |
| Load Capacity | 2 lb (0.9 kg) standard use; 1 lb (0.45 kg) heavy-duty use |
| Dimensions | Overall height 248 mm (9.75"); arm 76 mm (3") socket to socket |
| Material | High-strength composite |
| Weight | 0.69 kg (1.53 lb) |
| In the Box | RAM-A-CAN II cup holder base, composite double ball mount, assembly hardware |
You will find matching cradles, holders and more RAM mounting parts 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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