6 Best Locking Arm Extensions For Deep Rv Dashboards

Navigating an RV across winding mountain passes requires a navigation screen that stays put, yet most factory dashboards are so deep that reaching a phone feels like a tactical operation. A solid locking arm extension bridges that gap, transforming a distant, unreachable dash into a command center that actually works for the driver. Investing in the right mount is the difference between keeping your eyes on the road and dangerously lunging across the console to adjust your GPS.

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RAM Mounts Twist-Lock: Best for Heavy-Duty Use

If your rig spends significant time on gravel backroads or unmaintained forest service lanes, RAM Mounts represent the gold standard. The patented ball-and-socket design allows for near-infinite adjustment, meaning you can position a heavy phone or even a smaller GPS unit exactly where it needs to be to clear the dash slope. Once tightened, this setup does not budge, regardless of the vibration levels coming from the suspension.

The modular nature of this system means you can swap out components as devices change, making it a “buy it once” investment. While it lacks the sleek aesthetic of consumer-grade plastic mounts, the industrial-grade components are built for the harsh temperature swings found in full-time mobile living.

Choose this mount if you prioritize durability over aesthetics and need a solution that survives years of vibration. It is the definitive choice for those who view their vehicle equipment as long-term infrastructure rather than temporary accessories.

iOttie Easy One Touch 5: Best Overall Value

For most RVers, the iOttie Easy One Touch 5 hits the sweet spot between functionality, price, and ease of use. The telescoping arm extends and pivots with a simple locking lever, allowing you to bridge the distance of even the deepest, most aggressively slanted dashboards. It is a highly intuitive system that enables one-handed operation, which is essential when preparing for a sudden turn or checking a route change.

The suction cup base features a sticky gel layer that adheres well to slightly textured surfaces, common in many RV cockpits. While it may not survive the constant shaking of extreme off-roading, it is perfectly suited for highway travel and light adventure use.

If you want a reliable, user-friendly mount that works right out of the box without complex installation, this is the pick. It offers the best balance of features for the majority of RV configurations.

Tackform Enduro Series: Most Secure Arm Lock

The Tackform Enduro series is engineered for those who demand absolute rigidity. Constructed primarily from metal rather than plastic, this mount eliminates the “wobble” often associated with plastic extending arms. The locking mechanism utilizes a rugged tension system that holds the arm firmly in place, even when fully extended across a wide dashboard.

Because of its heavy construction, it is best paired with a solid mounting surface. It excels in trucks and Class C RVs where vibration is constant but the mounting surface is relatively flat and sturdy.

This is the mount for the driver who is tired of cheap plastics failing after a season of travel. If you value mechanical precision and security above all else, the Tackform provides a level of stability that few other mounts can match.

Arkon RoadVise XL Long Arm: Best for Tablets

Navigating with a tablet is becoming the norm for those who want larger maps and easier-to-read text, but tablets require serious support. The Arkon RoadVise XL features a long, rigid arm specifically designed to handle the extra weight and size of larger devices without drooping. The clamp mechanism is heavy-duty, ensuring that expensive electronics remain locked in position even when navigating potholes.

The arm length is particularly effective for deep windshields or dashboards where a standard mount would place the tablet too far from the driver’s peripheral vision. Its design acknowledges the physical reality that a tablet’s weight is a liability; the mount compensates with a reinforced structure.

If your navigation strategy centers on an iPad or Android tablet, do not settle for a standard phone mount. The Arkon is the most capable solution for supporting larger displays reliably and safely.

Scosche MagicMount Extendo: Best Telescoping Arm

The Scosche MagicMount Extendo differentiates itself with an arm that telescopes further than almost any other option, making it a savior for motorhomes with massive, panoramic windshields. By utilizing a high-strength magnetic head, it allows for seamless, one-second mounting and dismounting of your device. This is ideal for those who prefer a clean dash when they aren’t actively navigating.

The telescoping arm is smooth and reliable, providing the necessary reach to bring your device right to the edge of the driver’s seat. While magnets can sometimes be divisive, this system uses an incredibly strong hold that ensures even heavy smartphones stay attached through heavy bumps.

If you enjoy the convenience of magnetic mounting and need significant reach to overcome a deep dash, this is the most practical choice. It turns a difficult-to-reach location into a convenient, accessible workspace.

LISEN Long Arm Mount: Best Budget-Friendly Pick

For the RVer who wants a functional upgrade without spending a premium, the LISEN Long Arm Mount provides surprising versatility. It features a dual-locking mechanism that secures the arm’s angle and length, which is a surprisingly robust feature at this price point. It is lightweight, simple to adjust, and performs adequately for standard-sized smartphones.

While it lacks the heavy-duty metal construction of more expensive alternatives, it is a significant step up from basic vent or CD-slot mounts. It manages to solve the reach problem effectively, even if the longevity of its plastic components is slightly lower than that of industrial-grade mounts.

If you need a cost-effective solution that doesn’t sacrifice core functionality, the LISEN is a smart acquisition. It is the perfect entry-level mount for those who need to fix their reach issue immediately without a large upfront investment.

Choosing the Right Arm Length for Your Rig

Determining the required reach starts with measuring the distance from the mounting point on your dash to the optimal viewing position. Too short, and you will find yourself leaning forward to read the GPS; too long, and the device will vibrate uncontrollably because it is acting as a lever. Aim for an arm length that places the device within reach while keeping the weight centered as close to the mount base as possible.

• Measure twice: Calculate the distance from your preferred dash location to your natural line of sight.
• Account for slope: Remember that a slanted dashboard forces you to use an extension just to clear the lip.
• Balance: A longer arm increases the risk of vibration, so always choose the shortest arm that still meets your reach requirements.

How to Get a Secure Mount on Any Dash Surface

Most RV dashboards are made of textured plastics, which are notoriously difficult for standard suction cups to grip. To achieve a permanent bond, start by cleaning the surface with isopropyl alcohol to remove any residual interior cleaners or silicone treatments. If the texture is too rough, utilize a rigid plastic mounting disc, which provides a smooth, flat surface for the suction cup to lock onto.

Never rely solely on the factory adhesive of a mounting disc in extreme heat. Supplementing the bond with a high-quality double-sided mounting tape, such as 3M VHB, ensures that your mount won’t detach when the RV interior heats up in the summer sun.

Preventing Vibration and Device Shake on the Road

Vibration is the silent killer of navigation mounts, causing fatigue and, eventually, mechanical failure. The secret to a stable device is ensuring that the mount’s support arm is not over-extended; the shorter the distance from the base to the cradle, the less the vibration is amplified. If your mount allows for a secondary support brace, use it to anchor the device cradle directly against the dash surface.

Furthermore, ensure that the pivot points on your arm are tightened beyond just “finger tight.” Use the provided tightening tools if available, as a tiny bit of play in the ball-joint will transform a minor road bump into a violent shake of the phone screen.

Suction Cup vs. Adhesive vs. Screw-In Mounts

Suction cup mounts offer the most flexibility, allowing you to move the device between the cockpit and the living area, but they are the most prone to failure in high-heat or extreme-cold environments. Adhesive mounts provide a lower profile and a more permanent bond, making them excellent for cluttered RV dashboards where space is at a premium. However, they are difficult to remove and may leave residue on the dash material.

Screw-in mounts are the only true “permanent” solution, offering the highest level of security and peace of mind for long-term travelers. While they require drilling small holes, this trade-off is often worth it for the sheer stability they provide on rough terrain. Choose your mounting method based on whether you prefer flexibility or absolute, unchanging reliability.

Selecting the right locking arm extension is a balance between reach, stability, and installation method. By prioritizing a mount that addresses your specific dash architecture and driving habits, you eliminate one of the most frustrating aspects of mobile navigation. Choose the tool that best fits your rig’s personality, and you will find that even the longest drives become significantly more manageable.