RAM MOUNTS B Size 1" Double Socket Mount Arm – Medium Composite (RAP-B-201U)
Quick take
The RAM-B-201U is a medium composite double-socket arm for RAM’s B size (1-inch) ball-and-socket mounting system. It’s designed to help you dial in viewing angles with adjustable ball connections at both ends, using a spring-loaded socket mechanism for easier assembly. The main thing to confirm before buying is that your other mount components are B size, because this arm is meant specifically for that 1-inch system.
Pros and cons
Pros
- Medium “double socket” arm length (overall length 3.73 in) for compact vehicle layouts.
- Near-infinite adjustability thanks to the ball-and-socket connections at both ends.
- Spring-assisted socket design makes it easier to pivot and reassemble the connections.
- High strength composite construction built for a vehicle mount use case.
Cons
- Not a complete mount by itself, you need compatible B size RAM bases and device holders.
- Limited capacity guidance for “standard use” versus “heavy-duty use” (up to 2 lb standard, 1 lb heavy-duty), so heavier devices may require a different approach.
What buyers think
Buyer-review evidence is very positive for this kind of RAM arm, with recurring themes around fit into tight spaces, ease of swapping and reassembling the ball connections, and the overall sense that RAM components are durable and practical across different vehicle applications. There is also consistent emphasis on compatibility within the RAM system, since B size components share the same 1-inch ball dimension, allowing users to mix lengths and configurations as their setup changes. Review evidence is somewhat limited in detail around long-term performance under extreme conditions, but overall impressions point to solid build quality and straightforward day-to-day usability.
What this arm is for
This is the middle-length link in a RAM ball-and-socket setup. With sockets on both ends designed for 1-inch B size ball components, it can be used to position a device or holder so it sits at a comfortable viewing angle. The medium length (overall length 3.73 inches) is particularly useful when you need a little reach, but you still want to keep the mount compact, such as behind windshields or in other constrained vehicle locations.
Key specs that matter for buying
Compatibility and system sizing
The RAM-B-201U is a B size (1-inch) double socket arm. That means it’s intended to connect to RAM B size ball bases and device holders that use the same 1-inch ball diameter. If your current RAM setup uses a different size (for example C size or D size), this arm will not be a direct fit.
Length and adjustability
Overall length is 3.73 inches, with a socket-to-socket length of 3 inches. The design uses double ball-and-socket connections (one at each end), which is what enables very flexible positioning. In practice, that translates to easier dialing in of sightlines without having to move the mounting base every time.
Load limits
The arm is rated for standard use up to 2 lb, and heavy-duty use up to 1 lb. If you’re mounting a lighter navigation device or similar screen, the standard rating is typically the relevant one, while heavier setups should be evaluated carefully against the heavy-duty limit.
Materials and build
The arm is made from high strength composite, and it uses a spring inside the arm to open the end sockets so the ball ends can be pivoted into place. This spring-loaded mechanism is part of what makes adjustments and reassembly feel quicker than mounts that rely on tools or more complicated hardware.
Pros and cons in plain English
When it’s a great fit
- You already use RAM B size 1-inch components and want a medium arm to refine the positioning of your device.
- You want lots of angle adjustability without committing to a fixed orientation.
- You’re working with limited space where a shorter or medium arm is easier to fit than longer links.
When you should look elsewhere
- You don’t have compatible B size parts yet, since you’ll need to buy the appropriate ball base and holder to build a complete mount.
- You’re mounting something heavy enough that you may exceed the listed load guidance (2 lb standard use, 1 lb heavy-duty use).
- You need a different RAM arm size or length, if your current layout calls for a shorter or longer connector.
Verdict: should you buy the RAM-B-201U?
The RAM-B-201U is a smart pick if your goal is to extend and fine-tune a RAM B size mounting system with a medium-length, double-socket link. It’s built for flexibility, and the spring-assisted socket design supports quick pivoting and reassembly. The biggest buying caveat is compatibility, make sure your other components are B size (1-inch) and double-check the load requirements for your specific device.
FAQ
Is the RAP-B-201U compatible with all RAM mounts?
No. It’s designed for RAM B size components (1-inch ball diameter). It will only connect directly with mounts that use the B size system.
What length is the RAM-B-201U arm?
It has an overall length of 3.73 inches, with a socket-to-socket length of 3 inches.
How much weight can this mount arm handle?
It’s rated for up to 2 lb for standard use and up to 1 lb for heavy-duty use.
Does this arm include the device holder?
No. It’s an arm component. You need compatible B size ball bases and a device holder to create a complete mount setup.
Why do people like RAM double socket arms?
The double ball-and-socket design allows extensive angle adjustment at both ends, which helps you set and maintain good viewing angles in different vehicle positions.
Specifications
| Product Title | RAM MOUNTS B Size 1" Double Socket Mount Arm – Medium Composite (RAP-B-201U) |
|---|---|
| Category | Electronics > GPS, Finders & Accessories > GPS System Accessories > Vehicle Mounts |
| Brand | RAM MOUNTS |
| Manufacturer | RAM MOUNTS |
| Model Number | RAP-B-201U |
| Color | Black |
| Material | High strength composite |
| Item Weight | 0.2 Grams |
| Brand Name | RAM MOUNTS |
| UPC | 161378274025 071030291539 071020377762 971474323967 345800446253 014445605010 796793200948 793442802010 |
| Global Trade Identification Number | 00793442802010 |
| Manufacturer Part Number | RAP-B-201U |
| Manufacturer Warranty Description | Manufacturer |
| Included Components | RAM MOUNTS RAP-B-201U |
| Item Type Name | Vehicle Mounts |
| Item Dimensions | 2 x 2 x 6 inches |
| Material Type | High strength composite |
| Mounting Type | Ball and Socket |
| Item dimensions L x W x H | 2 x 2 x 6 inches |
Available variants
Style
- Short Arm
- Medium Arm
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