
The Story
RAM 50.8mm x 43mm (2" x 1.7") Base with 25mm (1") Ball that Contains the Universal AMPs Hole Pattern for the Garmin Zumo, TomTom Rider & Urban Rider
- The RAM-B-347U base consists of a 1" diameter rubber ball connected at right angles to a 50.8mm x 43mm (2" x 1.7") square base.
- The base has four pre-drilled holes at each corner, making the universal 1.5 x 1.18 (hole spacing) AMPS hole pattern.
FEATURES
- 50.8mm x 43mm (2" x 1.7") square ball base features an industry-standard AMPS hole pattern with four pre-drilled holes at each corner
- Included B size 1" RAM® rubber ball allows for connection to any B size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability
- Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
- Backed by a lifetime warranty
HOLE PATTERN
- 4-Hole AMPS: 21.9mm x 37.9mm (1.181" x 1.496")
THREAD PITCH
- 6.35mm (1/4") -20
PLATE SIZE
- 50.8mm (2" X 1.7")
BALL/SOCKET SIZE
- B Size 25mm (1")
MATERIALS
- Marine-grade aluminum
Part Number:- RAM-B-347U
ALL PICTURES SHOWN ARE FOR ILLUSTRATION PURPOSE ONLY. ACTUAL PRODUCT MAY VARY.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
RAM 50.8mm x 43mm (2" x 1.7") Base with 25mm (1") Ball that Contains the Universal AMPs Hole Pattern for the Garmin Zumo, TomTom Rider & Urban Rider
- The RAM-B-347U base consists of a 1" diameter rubber ball connected at right angles to a 50.8mm x 43mm (2" x 1.7") square base.
- The base has four pre-drilled holes at each corner, making the universal 1.5 x 1.18 (hole spacing) AMPS hole pattern.
FEATURES
- 50.8mm x 43mm (2" x 1.7") square ball base features an industry-standard AMPS hole pattern with four pre-drilled holes at each corner
- Included B size 1" RAM® rubber ball allows for connection to any B size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability
- Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
- Backed by a lifetime warranty
HOLE PATTERN
- 4-Hole AMPS: 21.9mm x 37.9mm (1.181" x 1.496")
THREAD PITCH
- 6.35mm (1/4") -20
PLATE SIZE
- 50.8mm (2" X 1.7")
BALL/SOCKET SIZE
- B Size 25mm (1")
MATERIALS
- Marine-grade aluminum
Part Number:- RAM-B-347U
ALL PICTURES SHOWN ARE FOR ILLUSTRATION PURPOSE ONLY. ACTUAL PRODUCT MAY VARY.




















