RAM X-Grip Large Phone Mount with Twist-Lock Suction Cup, Long Arm
The large-format sibling of RAM's classic suction cup phone mount: a bigger X-Grip cradle for phablets and large phones, on a longer arm for more clearance from the windshield.
Why the long arm and larger cradle matter
Modern phones keep growing, and a case adds further bulk -- RAM's standard X-Grip tops out at 3.25" wide, which no longer fits every large phone in its case. This version's cradle opens to 4.5" and its arm is over two inches longer (5.31" socket-to-socket versus 3"), which also pulls the phone further off the glass -- useful when a large phone would otherwise sit too close to the wheel or dash controls.
Features
- Spring-loaded X-Grip cradle for large phones/phablets, 1.75" - 4.5" wide, with rubber grip caps and an optional device tether
- 3.3" Twist-Lock suction cup base with long-length B Size double socket arm for extra reach off the glass
- Made of powder-coated, marine-grade aluminum, stainless steel hardware, and high-strength composite
- Backed by a lifetime warranty on the mount hardware
How RAM's modular system works
Every RAM mount is built from up to three parts that click together. A base clamps, bolts, or straps onto the vehicle -- a dash, a windshield, a cup holder, or a rail. An arm connects two RAM balls together and can be locked at any angle, so once mounted you can tilt, rotate, and reposition the device freely, then lock it firmly in place by hand. A cradle or holder grips the specific device -- phone, tablet, or drink.
Not every product includes all three parts -- some are just the base, some bundle a holder, some are a complete kit. This page says plainly which parts are included with this particular SKU, so you know exactly what you are getting and what, if anything, you would need to add.
The ball size determines what it can carry
RAM uses five ball sizes, each rated for a different weight and duty class. This product uses B Size -- the ball size used on all six mounts in this line. B Size (part numbers starting RAM-B-...) is RAM's most common size, standard duty -- what RAM recommends for phones, GPS units, and light tablets in normal use. C Size (plain RAM-... part numbers, no letter prefix) is heavy duty, used for larger tablets and anything mounted somewhere that gets a lot of vibration or shock. D and E Size are reserved for large monitors and specialist equipment.
Rule of thumb: if the mount will live somewhere frequently jostled or vibrated -- an off-road vehicle, a gravel road at speed -- RAM recommends stepping up to a larger ball size for extra stability, even if a lighter mount would technically hold the device's weight.
No tools required, on purpose
RAM arms are designed to be tightened by hand only -- there is no official torque spec, because the ball-and-socket joint is meant to be adjustable in the field without a wrench. If hand-tightening does not hold your device firmly, that is usually a sign the ball size is undersized for the device -- sizing up solves it, rather than over-tightening.
Aluminum or composite -- both built for the outdoors
RAM mounts are made from marine-grade aluminum or high-strength composite, depending on the product; both carry a lifetime warranty and similar weight ratings. Aluminum's powder-coat finish handles rough vibration and shock slightly better; composite has no paint to chip and is often preferred in high-corrosion or salt-air environments. Neither choice is worse -- it is a trade-off between finish and environment.
What's in the box
The kit ships complete: the Twist-Lock suction cup base, the long-length B Size double socket arm, the spring-loaded large X-Grip cradle, assembly hardware, an optional safety tether, and a glue tube for the X-Grip's rubber caps.
Specifications
| Ball size | B Size (1") |
| Arm length | Long (socket-to-socket: 5.31") |
| Holder width range | 1.75" - 4.5" (approx. 44 - 114 mm) |
| Holder max depth | 0.875" (approx. 22 mm) |
| Suction cup diameter | 3.3" |
| Weight capacity, standard use | 2 lbs (approx. 0.9 kg) |
| Weight capacity, heavy-duty use | 1 lb (approx. 0.45 kg) |
| Materials | Marine-grade aluminum, high-strength composite, stainless steel |
| Packaging | Poly bag |
| Weight | 1.05 lb (approx. 0.48 kg) |
Frequently asked questions
Does this damage the windshield or dashboard?
No. The Twist-Lock suction cup holds by vacuum against smooth glass or polished, non-porous plastic -- no adhesive, no screws, no marks.
How strong is the grip over time and temperature swings?
Rated for repeated daily on/off use; RAM notes that large temperature swings can affect the seal, in which case wiping away condensation and re-engaging the locking lever restores the hold. The rubber suction cup is a wear item, excluded from the lifetime warranty that covers the mount hardware.
What phone and phablet sizes fit?
Any device -- with its case, if used -- between 1.75" and 4.5" wide and up to 0.875" deep. This is the large version of the X-Grip; if your phone is on the smaller side, the standard-size X-Grip mount sits closer to the glass and may suit better.
Is drilling required?
No. The suction cup base clamps onto glass or smooth dashboard plastic by vacuum -- nothing is installed permanently.
Is this suitable for a motorcycle?
No. RAM's own guidance is not to use a suction cup base on a motorcycle -- vibration at that level calls for a bolted or clamped base instead.