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Description
RAM Rectangular Base - B Series - 51 x 43mm - 4 hole AMPS hole patternRAM B 347U RAM Ball Base with Rectangular AMPS Plate (B Size) The RAM B 347U is a 51 x 43mm (2" x 1. 7") rectangular ball base carrying the industry standard AMPS hole pattern, with a 1" B size ball that connects to any RAM B size double socket arm. It is a popular adaptor for AMPS mount GPS units such as the Garmin zumo and TomTom Rider. Key Features 51 x 43mm (2" x 1. 7") rectangular base with the four hole AMPS pattern, pre drilled at each corner
RAM-B-347U – RAM® Ball Base with Rectangular AMPS Plate (B Size)
The RAM-B-347U is a 51 x 43mm (2" x 1.7") rectangular ball base carrying the industry-standard AMPS hole pattern, with a 1" B-size ball that connects to any RAM B-size double socket arm. It is a popular adaptor for AMPS-mount GPS units such as the Garmin zumo and TomTom Rider.
Key Features
- 51 x 43mm (2" x 1.7") rectangular base with the four-hole AMPS pattern, pre-drilled at each corner
- 1" B-size rubber ball connects to any B-size RAM® double socket arm
- Ball-and-socket design allows near-infinite adjustment
- Powder-coated marine-grade aluminium for corrosion resistance and long life
- Backed by a lifetime warranty
Dimensions & Specifications
- Base dimensions: 51 x 43mm (2" x 1.7")
- Hole pattern: 4-hole AMPS 1.181" x 1.496" (30mm x 38mm)
- Ball size: B size, 1" rubber ball
- Load capacity: 907g (2 lb) standard use; 454g (1 lb) heavy-duty use
- Weight: 54g (0.12 lb)
- Material: powder-coated marine-grade aluminium
Compatible Devices
Suits GPS cradles using the four-hole AMPS pattern, including:
Garmin
- GPSMAP 276Cx
- zumo 390LM
- zumo 396 LMT-S
- zumo 400
- zumo 450
- zumo 500
- zumo 550
- zumo 595LM
- zumo 660
- zumo 665
Magellan
- TRX7
- TRX7 CS
Road Tech
- Zumo 590
- Zumo 660
- Zumo 665
TomTom
- Rider 2
- Urban Rider
Trail Tech
- Voyager Pro
Videos
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 4
Quality product but sold on Amazon cheaper with different seller.
Size: Medium Size 2, Color: White-Blue
The size is the reason for the missing star. Made of good quality but found cheaper from another buyer. My 9month Cane Corso hasn't destroyed it yet and enjoys playing keep away with the other dogs.
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Reviewed in the United States on November 2, 2025
★★★★★ 5
absolutely must buy perfect for dogs. I have a large black lab and he has had so much fun with us.
Size: Large Size 3, Color: White-Blue
I have to say that my dog would be considered an aggressive tower. However, this ball has stayed intact. I love that it comes with the pump. It’s extremely functional very soft for catching can be cleaned. Very easy easy the quality is exceptional. Very functional does have a bounce. I can say he has had so much fun with this since it’s getting it for his birthday on 11/11 I highly recommend this product and would definitely buy again.
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Reviewed in the United States on November 23, 2025
★★★★★ 5
Perfect for keep-away
Size: Large Size 3, Color: Red-Blue
I purchased one of these for my pup and he has a ball throwing it up in the air and chasing it. Handy for something they can play with alone.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Your fur kid will thank you!
Color: Yellow Green, Size: 6 Inch
My dog absolutely LOVES this toy! I recently adopted a rescue & wasn’t sure what she might like, so I bought this in a 6” size for a 50# shep/lab/hound. The ball comes with a cute little pump with needle which only takes a few seconds to inflate. I put the ball outside for her; she wasn’t sure of it at first but it didn’t take her long to realize how fun it was to throw around & chase. She throws it up in the air by the loops & runs all over the yard with it & it’s so comical to watch! It seems pretty durable & well made - I’m shocked she hasn’t punctured it by now, but if she does I will definitely buy her another….and another. This is easily her favorite toy. I highly recommend it for your fur kid - you won’t be disappointed, & neither will they..
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Reviewed in the United States on April 21, 2026
★★★★★ 5
First ball was great!
Color: Black Green, Size: 8 Inch
This ball was great! My dog loves it. I ordered another smaller one. It had no pump and the inside was separated from the outside piece so it couldn’t be pumped up.
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Reviewed in the United States on May 18, 2026