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RAM® Finger-Grip™ Universal Mount with RAM® Twist-Lock™ Suction Cup Base

Part# RAM-B-166-UN4U


B Size


The RAM-B-166-UN4U consists of a 3.3" diameter suction cup twist lock base, double socket arm and universal Finger Grip™ cradle. The suction cup, twist lock base is designed to have a strong hold on glass and non-porous plastic surfaces, including RAM adhesive disks. The universal Finger Grip™ cradle is designed to hold a large amount of cell phones and electronic devices. The cradle comes with (3 sets) of four flexible rubber coated fingers placed along sides to grip your device. The fingers open by squeezing the ends to open the small finger arms. The bottom of the cradle includes a back plate that adds support to the device being held by the mount.

Height Dimensions:
  • Minimum with Top and Bottom Plates: 5.25"
  • Maximum with Top and Bottom Plates: 6.0"
  • The top and bottom plates can be removed for larger devices.
Using Short Arm Side Clamps:
  • Maximum Depth: 0.75"
  • Minimum Width: 1.25"
  • Maximum Width: 3.0"
Using Medium Arm Side Clamps:
  • Maximum Depth: 1.25"
  • Minimum Width: 1.5"
  • Maximum Width: 3.5"
Using Long Arm Side Clamps:
  • Maximum Depth: 1.6"
  • Minimum Width: 2.25"
  • Maximum Width: 3.5"
  • Material:High Strength Composite and Powder Coated Marine Grade Aluminum
  • Ball Size:B Size 1" Rubber Ball
  • Plate Dimensions:2.5W x 5.0H"
  • Note:The "U" in the part number reflects product packaged in poly bag.
  • Weight:1.03 lbs.
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  Compatible Devices

  • 2-Way Radios
  • Garmin Alpha 100
  • Garmin Astro 900 System
  • Garmin Delta Sport XC
  • Garmin Delta Upland XC
  • Garmin Delta XC
  • Garmin eTrex Touch 25
  • Garmin eTrex Touch 35
  • Garmin eTrex Touch 35t
  • Garmin GPSMAP 66 Series
  • Garmin inReach Explorer+
  • Garmin inReach SE+
  • Garmin PRO Control
  • Garmin Sport PRO
  • Spot X
  • Venterior VT-FF001/E
  • Venterior VT-FF002
  • Venterior VT-FF003
  • Venterior VT-FF04

Additional Mounting Base Options


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RAM® Diamond Ball Base

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RAM® 11mm Bolt Head Adapter Ball Base

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RAM® Offset Reservoir Cover Ball Base

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RAM® Magnetic Ball Base

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RAM® Handlebar U-Bolt Base for Rails 0.5" to 1" in Diameter

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RAM® Flex Adhesive Ball Base

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RAM® Tough-Clamp™ Small Base with Ball

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RAM® EZY-Mount™ Quick Release Adapter Kit

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RAM® Screen Magnifier for Handheld Devices

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RAM® Portable Friction Dashboard Base

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RAM® Composite Double Ball Swivel Adapter

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RAM® Double Ball Adapter

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