RAM Mounts for ATVs and UTVs: What You Need to Know

Quick answer

For most ATV and UTV riders, start with the rail or bar diameter you are clamping to, then match the RAM ball size to the weight and vibration of the device. A phone or compact GPS usually works on a 1-inch ball system, while a tablet or heavier electronics call for a larger ball and a more rigid arm. Buy the mount that fits your bar first; upgrade the holder only if the device itself demands it.

ATVs and UTVs shake, bounce and vibrate in ways that cars and trucks never do. A mount that feels solid in a parking lot can loosen or sag after a few miles of washboard trail, so the buying decision is less about brand loyalty and more about matching the mount to the bar, the device and the ride.

This guide walks through the practical choices: what diameter your bars or rails actually are, which RAM ball size suits your device, and when a UTV tablet mount is worth the extra bulk. It uses real RAM Mounts products as examples so you can see how the specifications translate into a decision.

Start with the bar, not the device

Almost every ATV and UTV mount begins with a clamp, and clamps are sized in fractions of an inch. RAM U-bolt bases commonly accommodate rails from 0.50" to 1.25" in diameter, and some include a composite rail adapter that can narrow the grip to a minimum of 0.5". Measure your handlebar, roll cage tube or accessory rail before you shop, because a mount that is too large will not tighten and one that is too small simply will not fit.

This is also why the same mount can be sold for a motorcycle, a UTV and a boat. The U-bolt base is the variable; the ball, arm and holder above it are often shared across categories. If you already own RAM components, you may only need the correct base rather than a whole new kit.

• Measure the tube outer diameter with calipers or a wrap of tape and a ruler, not by eye.
• Check whether the base includes a rail adapter if your bar is thinner than the standard range.
• Confirm the clamp hardware is included; some kits ship with the base only.

Ball size decides how much device you can carry

RAM systems are built around ball-and-socket joints, and the ball diameter sets the practical weight limit. A 1-inch ball system is the common choice for phones, compact GPS units and small radios. Larger balls and arms resist sag better under a tablet or a heavier device, especially when the arm is extended.

Rubber ball and socket technology allows almost infinite adjustment and perfect viewing angles, which matters on a machine where you are standing, sitting or leaning. But the same flexibility means a small ball under a heavy load will droop over rough ground. If you plan to run a tablet, choose the larger system even if the smaller one technically fits the holder.

• Phone or compact GPS: a 1-inch ball system is usually sufficient.
• Tablet or heavy electronics: step up to a larger ball and a shorter arm.
• Long arms magnify vibration and sag; keep the arm as short as your viewing position allows.

Vibration and weather change the calculus

Off-road vibration works screws loose and wears soft materials. Zinc-coated metal bases and high-strength composite cradles are common in RAM off-road kits for exactly this reason, and they resist the mud, dust and spray that a UTV throws at them. A mount that uses quality materials will hold torque longer between checks.

Weather also affects the holder. A cradle that grips the device on all four sides will keep it from bouncing out, while a spring-loaded or finger-style holder makes removal easier when you stop. Neither is universally better; it depends on whether you leave the device mounted or take it with you.

• Re-check clamp bolts after the first few rides, then periodically.
• Prefer metal bases and composite cradles for muddy or wet conditions.
• If you remove the device often, prioritize a holder with quick-release or flexible grip.

Phone, GPS or tablet: matching the holder to the job

An ATV phone mount is the most common starting point, and the simplest. A handlebar U-bolt double ball mount with a device-specific cradle keeps the phone rigid and angled where you can glance at it. Device-specific cradles fit one model cleanly; universal holders fit many devices but add bulk and adjustability.

A UTV tablet mount is a different project. Tablets are larger, heavier and often used for mapping, so they benefit from a bigger ball system, a shorter arm and a holder that wraps the corners. If you need a tablet for work as well as trail navigation, look at the same mounting principles used in vehicle laptop and monitor setups rather than a phone holder scaled up.

• Device-specific cradle: cleanest fit, no adjustment, one device only.
• Universal holder: fits several devices, needs occasional re-gripping.
• Tablet: plan for a larger ball, shorter arm and corner support.

What the catalog facts tell you

The product records below show how RAM describes its own off-road-capable mounts. Notice that the rail range, the ball system and the holder style appear in the specifications, and those are the numbers to compare against your machine. Where a specification is not listed, such as an exact ball size or a weight rating, treat that as an open question and confirm with the product page before buying.

One caution: the Finger-Grip universal mount is categorized under radio mounts in this catalog, and its exact ball size is not stated in the supplied facts. It is a flexible holder rather than a device-specific cradle, so it suits riders who change devices or need to grip an odd-shaped item. If you need a guaranteed fit for one phone model, a device-specific cradle is the safer choice.

• Compare the stated rail range to your measured bar diameter.
• Check whether the holder is device-specific or universal.
• If ball size or weight rating is absent, verify before purchase.

Decision rules for ATV and UTV mounts

• If your bar is 0.50" to 1.25": A RAM U-bolt base with the standard rail range will fit. If your bar is at the low end, use the included composite rail adapter to narrow the grip to 0.5". Measure first; the base is the part that must fit.
• If you are mounting a phone or compact GPS: A 1-inch ball system with a device-specific cradle is the straightforward choice. It keeps the assembly light and the viewing angle adjustable. Do not oversize the mount for a light device.
• If you are mounting a tablet: Choose a larger ball system, keep the arm short, and use a holder that supports the corners. A phone holder scaled up will sag under tablet weight on rough ground. Weight and vibration, not screen size, drive this decision.
• If you change devices often: A universal holder such as a finger-style grip fits many shapes, but it is not a guaranteed fit for one model and its ball size may not be stated in the catalog. Universal means flexible, not precise.

Real RAM Mounts examples

• RAM® Handlebar U-Bolt Double Ball Mount for Apple iPhone 5 & 5s: Consists of a zinc coated u-bolt base, double socket arm and high strength composite cradle. Included hardware accommodates rails from 0.50" to 1.25" in diameter, and the included composite rail adapter can narrow the rail to a minimum width of 0.5". The base includes black cover caps for the exposed u-bolt ends. This is the classic ATV phone mount pattern: measure your bar against the 0.50" to 1.25" range, and use the rail adapter if your bar is thinner. The cover caps are a small but real detail on a machine that sees mud and spray.
• RAM® Handlebar U-Bolt Double Ball Mount for Garmin nuvi 700 Series: The zinc coated metal u-bolt and nuts fit motorcycle handlebars or circular rail from 0.50" to 1.25" in diameter. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. A GPS-specific cradle removes the guesswork of a universal holder. The same 0.50" to 1.25" rail range applies, so if this fits your bars, it is a rigid, purpose-built option for trail navigation.
• RAM® Laptop Mount for Toyota 4Runner & Tacoma (Legacy): This No-Drill Laptop Stand System installs into the specified vehicles using the existing hardware of the passenger side seat rails, with telescoping upper and lower poles and dual swing arms providing articulation and 12 inches of reach. Not an ATV product, but it shows the other end of the spectrum: when the device is heavy and the vehicle is a truck or UTV with a cab, a No-Drill seat-rail system is more appropriate than a handlebar clamp. Use it as a reference for how RAM scales mounting to weight.

Who this is for

Best for

• Riders who know their bar or rail diameter and want a mount sized to their device
• ATV and UTV owners mounting a phone, GPS or compact radio for trail navigation
• Buyers who prefer to add a base to existing RAM components rather than replace a whole kit

Not for

• Anyone who has not measured their bar diameter and needs a guaranteed fit
• Heavy tablet or laptop setups in a cabbed vehicle, where a No-Drill seat-rail system is more appropriate
• Buyers who need a published weight rating that the catalog does not provide

Buy the base that fits your bar, then match the ball size and holder to the device you actually carry. That order of decisions prevents most of the sag, rattle and re-tightening that frustrate off-road riders. If a specification is missing from the listing, treat it as a question to answer before you order, not a detail to assume.