Ram Mounts Ball Adapter with AMPS Plate - B Size

RAM Mounts Screw-Down AMPS Base with B-Series Ball.

The RAM-B-347U is a high-quality and durable square base plate equipped with the standardized AMPS hole pattern.

This versatile adapter is specifically designed for the secure mounting of GPS devices, phone holders, and other displays on motorcycles, cars, and heavy machinery.

Why choose the RAM-B-347U?

• Universal AMPS hole pattern: The base features the industry-standard 4-hole AMPS pattern, making it directly compatible with most device cradles and navigators (such as Garmin Zūmo and TomTom Rider).
• Modular B-Series ball: The 1-inch (B-size) rubber-coated ball damps vibration and allows for near-infinite adjustment options when combined with RAM Mounts arms and other components.
• Durable materials: Made of powder-coated marine-grade aluminum, ensuring long service life and corrosion resistance even in demanding conditions.
• Vibration damping: Patented rubber ball technology protects sensitive electronic devices from vibration caused by the engine and the road. Wide compatibility

This base plate fits directly onto the original cradles of many popular devices, including:

• Garmin: Zūmo series (e.g., XT, XT2, 396, 550, 660), Tread, and many GPSMAP models.
• TomTom: Rider series and Urban Rider.
• Magellan: TRX7 and RoadMate series.
• Others: All cradles and cases that use the standard AMPS hole pattern.

Technical Specifications

• Part number: RAM-B-347U
• Ball size: B-size (1" / 25.4 mm)
• Base dimensions: 2" x 1.7" (approx. 51 mm x 43 mm)
• Hole pattern: 4-hole AMPS (1.181" x 1.496")
• Material: Powder-coated marine-grade aluminum
• Weight capacity: Normal use approx. 0.9 kg (2 lbs), heavy-duty use approx. 0.45 kg (1 lb)
• Warranty: Lifetime Warranty