How to Choose the Right RAM Mount Vehicle Base for Your Motorcycle

Selecting the right ram mount vehicle base for your motorcycle is the most critical step in building a secure, reliable mobile device setup. Because motorcycle cockpits vary wildly—ranging from the exposed tubular bars of adventure bikes to the tight, clip-on configurations of sportbikes—there is no single universal mounting solution. Finding the correct base requires a systematic approach: inspecting your bike’s cockpit, measuring key dimensions, and verifying that the installation will not interfere with your controls or safety. By matching your specific motorcycle configuration to the appropriate mounting hardware, you ensure your phone, GPS, or camera remains stable through daily commutes and long-distance rides alike.

Identify Your Motorcycle's Available Mounting Points

Before purchasing any mounting hardware, you must closely inspect your motorcycle’s cockpit to identify viable attachment points. The most common locations are the handlebars, mirror stems, fork stems, and control reservoirs. Each of these areas has unique physical characteristics that dictate which type of base can be safely installed.

First, examine your handlebars. Many naked bikes, cruisers, and adventure motorcycles feature exposed tubular handlebars, which offer ample space for clamping hardware. However, many modern scooters and touring motorcycles use solid, cast handlebars or cover them entirely with plastic fairings, making standard wrap-around clamps impossible to use.

Next, look at your mirror stems. If your handlebars are crowded or covered, the mirror mounting points are excellent alternatives. You must check whether your mirrors thread directly into the handlebar control perches or if they are mounted on exposed metal stems. It is also essential to determine the thread direction; while most motorcycles use standard right-hand (clockwise) threads, some manufacturers utilize left-hand (counter-clockwise) threads on the right-side mirror.

For sportbikes and sport-touring models, clip-on handlebars leave virtually no room for traditional clamps. In these setups, the steering stem—the hollow shaft in the center of the triple clamp—is often the primary mounting candidate. Inspect this area to confirm if the steering stem is hollow, partially obstructed, or completely solid.

Finally, evaluate your brake and clutch reservoirs. The top clamps of your handlebar control perches are secured by parallel bolts. If other areas are blocked, these reservoir bolt patterns can host a specialized mounting plate, provided there is enough clearance around the master cylinder.

Match the Mounting Point to the Correct RAM Base Type

The core of the RAM mounting system is its ball-and-socket design, which relies on a rubber-coated ball attached to a vehicle-specific base. This ball connects to a double-socket arm, allowing for highly adjustable positioning of your device. Once you have identified your motorcycle’s available mounting points, you can select the specific category of ram mount vehicle base designed to fit that location.

Handlebar and Rail Bases

If your motorcycle has exposed tubular handlebars, a handlebar or rail base is typically the most straightforward option. These bases generally use a metal U-bolt or a strap clamp to wrap securely around the handlebar tube. To choose the correct size, you must measure the outer diameter of your handlebar using a digital caliper or a flexible tape measure. Standard motorcycle handlebars are typically 22mm (7/8 inch) or 28.6mm (1-1/8 inch) tapered, while some cruisers feature 25.4mm (1 inch) or 32mm (1-1/4 inch) bars.

Before installing a U-bolt base, inspect the handlebar for any internal wiring or heated grip cables. Some premium motorcycles route electrical lines inside the handlebars; clamping a heavy U-bolt over these areas without care can pinch and damage internal wiring.

Additionally, verify the clearance around your handlebar switches and control perches. The base must sit flush against the metal tube without pressing against clutch cables, brake lines, or electrical wire harnesses. If handlebar space is extremely limited, consider a narrow clamp base that replaces one of your factory handlebar riser bolts instead of a wider U-bolt assembly.

Fork Stem and Mirror Mount Bases

For sportbikes with clip-on handlebars, a fork stem base provides a clean, centered mounting position. This base uses an expansion plug that inserts directly into the hollow steering stem. You must measure the inner diameter of the stem hole to ensure it matches the expansion plug’s specifications. If the stem is solid, tapered, or has an internal lip that prevents the plug from expanding fully, this base type will not work safely.

Mirror mount bases are highly popular for commuter motorcycles and scooters, which are common in urban riding environments like Singapore. These bases feature a flat metal plate with a hole that slips over the mirror’s threaded stem before the mirror is tightened down.

When selecting a mirror base, verify the thread diameter and pitch—typically M8 or M10. You must also check if your motorcycle requires a reverse-thread adapter. Installing a standard base on a reverse-threaded mirror stem without the correct adapter can cause the mirror to loosen under wind pressure at expressway speeds, creating a serious safety hazard.

Brake and Clutch Reservoir Bases

When handlebars are completely shrouded in plastic and the fork stem is solid, a brake or clutch reservoir base offers a highly secure alternative. These bases mount directly over the reservoir top cover or replace the factory perch clamp using longer bolts and spacers.

To ensure a proper fit, measure the center-to-center distance of the factory bolts on your clutch or brake master cylinder. This measurement must match the slot spacing on the replacement base plate.

You must also check the clearance around the master cylinder. Ensure that the installed base, arm, and device do not block your view of the reservoir’s fluid level sight glass. Most importantly, verify that the mount does not interfere with the full range of travel of your brake or clutch levers.

Verify Clearance, Vibration, and Safety Constraints

A secure physical fit is only the first step; you must also ensure the mount does not compromise riding safety or damage your equipment. Start by checking the handlebar sweep. Turn your handlebars fully from lock to lock—all the way to the left and all the way to the right. The mount, arm, and device must not contact the fuel tank, windscreen, fairings, or any tank bags you use.

Ensure the mount does not block your view of critical instrument clusters, including the speedometer, warning lights, or ignition switch. A blocked speedometer can lead to safety hazards or traffic violations, especially on highly monitored expressways.

Cables and hoses must have complete freedom of movement. Watch the front brake lines, throttle cables, and clutch cables as you turn the handlebars. If any cable catches on the RAM base or arm, it can cause the throttle to stick or the brakes to drag, presenting an immediate safety risk.

Vibration is a major factor on motorcycles, particularly single-cylinder commuter bikes, high-revving sportbikes, or large-displacement V-twins. High-frequency engine vibrations can travel through the frame and damage sensitive electronic components, such as the optical image stabilization (OIS) systems in modern smartphone cameras. If you plan to mount a smartphone, evaluate whether you need to integrate a vibration dampener between the RAM base and the device holder.

Finally, match the ball size to the weight of your gear. The standard 1-inch (B-size) ball is generally rated for light devices like smartphones or small GPS units under typical riding conditions. For heavier tablets, rugged action cameras, or heavy-duty off-road riding where G-forces are higher, upgrading to a 1.5-inch (C-size) ball system provides the necessary holding power to prevent the mount from drooping or shifting.

Step-by-Step Installation and Fitment Check

Before beginning installation, consult your motorcycle’s owner’s manual or service manual. This is especially critical if you are removing factory bolts from the handlebar clamps, mirror perches, or brake reservoirs, as these components have specific torque specifications that must be maintained for safe operation.

Gather the correct tools for the job. Avoid using adjustable wrenches or poorly fitting hex keys that can strip the bolt heads. When installing a handlebar U-bolt or clamp, tighten the nuts evenly in an alternating pattern. Over-tightening can crush thin-walled tubular handlebars or strip the threads on aluminum perches.

Carefully route any cables around the newly installed base. Ensure that no electrical wires or hydraulic brake lines are pinched between the mount hardware and the motorcycle frame. A pinched brake line can restrict fluid flow, while a pinched wire can cause a short circuit.

Once the base is secure, attach the double-socket arm and your device holder. Perform a physical shake test by grasping the mount and firmly checking for any play or movement. The base should feel like an extension of the motorcycle itself.

Before embarking on a long journey or entering heavy traffic, conduct a short, low-speed test ride in a safe, controlled environment, such as an empty parking lot or a quiet residential street. Pay close attention to any new vibrations, noises, or changes in steering feel. Verify that you can easily operate all controls with gloved hands and that the device remains perfectly stable.

Frequently Asked Questions (FAQ)

Can I use a RAM handlebar mount on a solid handlebar?

Standard U-bolt bases are designed specifically to wrap around hollow, tubular handlebars and will not function on solid, flat, or cast handlebars. If your motorcycle has solid or plastic-shrouded handlebars, you cannot use a U-bolt. Instead, look for clamp-style bases that attach to the mirror stem, or bases that replace one of the factory bolts on your handlebar clamp or control perches. Always verify the bolt thread and length requirements before replacing any factory hardware.

Do I need a vibration dampener for my motorcycle RAM mount?

Whether you need a vibration dampener depends largely on the device you are mounting and your motorcycle’s engine characteristics. Modern smartphones with optical image stabilization (OIS) are highly susceptible to damage from the high-frequency vibrations produced by motorcycle engines. If you are mounting a smartphone on a high-vibration bike—such as a single-cylinder scooter, a dual-sport, or a large V-twin cruiser—using a compatible vibration dampener is highly recommended to protect your camera’s internal mechanisms. For dedicated GPS units or action cameras designed for rugged use, a dampener is generally not required, but you should always check your device manufacturer’s guidelines.