A CLOSER LOOKOutdoor Accessories
Bring the screen closer. Swing it clear.
RAILBLAZA Swing Arm R-Lock
04-4147-11 · arm only
Buyer feedback ↓The Swing Arm R-Lock adds sideways reach between a StarPort base and a separate display mount. It is an extension arm, not a complete fish-finder holder.
- 3.3 lbMaximum supported displayRespect the complete mounting system’s limits≈ 3 × 500 mL of water
- 180°Swing rangeMove the display away from your working area
- Arm onlySelected packageDisplay platform and boat base are separate
Amazon US · 04-4147-11 · arm only · Retailer link
THE QUICK TAKE
Is it right for you?
This arm helps when the screen sits too far away or blocks your paddling space. You can bring a compatible display mount closer, then swing it away when the area needs to be clear.
Skip it if you need a complete ready-to-install mount. You still need a StarPort base and a matching top accessory. Extra reach also puts more leverage on the boat’s mounting surface.
01 / BUYING NOTES
Before you buy.
The arm does not hold a screen by itself.
Add a compatible display platform or dedicated adapter to the upper socket. The arm supplies reach; the separate accessory supplies the display connection.
Check the space it sweeps.
Position the arm so the screen can swing clear of your seat and controls. Check that the cable remains relaxed at both ends of its travel.
Support the complete assembly.
Use a suitable boat base and fastening surface. A longer reach increases leverage, even when the screen itself is within the arm’s weight limit.
02 / AMAZON REVIEWS
The buyers’ view.
An owner found the arm useful for getting a different GoPro filming angle on a personal watercraft. Another needed help figuring out how the components connected for a kayak table setup, while a fish-finder user reported excessive play at the lower connection and an unsuccessful attempt to tighten it.
Amazon US · Checked . Ratings may include other colors and sizes.
View source ↗03 / REVIEWS & VIDEO
See it in use.
See how it works, then read the findings behind the buying advice.
RAILBLAZA Swing Arm R-Lock - FishFinder, Plotter, Camera arm and more
Shows the arm moving a mounted device and explains the separate top-accessory requirement.
Watch on YouTube ↗Video and written sources are labeled by creator and tested scope. Manufacturer demonstrations explain use; they are not independent tests. No in-house hands-on testing is claimed.
Read 2 written sources Product scope is labeled · key findings in bold
RAILBLAZA describes an upper R-Lock joint and lower friction joint. Its demonstration explicitly states that the arm cannot hold a device by itself and must be combined with another accessory.
The selected 02-4147-11 is the Swing Arm only. Fish-finder plates, rail clamps, StarPort bases and electronics appearing in its gallery are separate.
04 / COMPARE
Different priorities.
Choose the tradeoff that fits how you will use it.
Swipe to see every alternative →
THIS GUIDERAILBLAZA Swing Arm R-Lock02-4147-11 |  ALTERNATIVEYakAttack LockNLoad Extension ArmExact selected model |  ALTERNATIVERAILBLAZA Fish Finder Mount R-Lock R02-4141-11 | |
|---|---|---|---|
| Amazon price | $39.42 | $17.95 | $35.99 |
| Best for | Bringing a compact display closer | More reach from an existing LockNLoad mount | Leveling a compact U-bracket display |
| System | Offset extension between StarPort components | Extension between matching joints | Jointed post in a StarPort socket |
| Installation | Support the base and leave cable slack | Check clearance throughout its sweep | Match bracket holes and total load |
| Consider | Needs both a base and a display mount | Adds height, leverage and another adjustment | Base is separate |
| Explore | Read buying guide →Amazon source ↗ | Read buying guide →Amazon source ↗ | Read buying guide →Amazon source ↗ |
About these everyday comparisons
Approximate comparisons to familiar objects: a bank card’s 3.37-inch long edge, a Letter sheet’s 11-inch long edge, or a US nickel’s 21.21 mm diameter / 5 g weight. Water comparisons exclude the container’s weight. Capacity comparisons describe volume, not exterior size or how food fits. Reference pictures identify the object; use the labeled ratio for the comparison.
05 / PRICE HISTORY
The price over time.
RAILBLAZA Swing Arm R-Lock · 04-4147-11 · arm only · Amazon US
The chart legend identifies Amazon and new-offer prices when available. New offers can include marketplace sellers. Coupons, shipping and size/color selections can change the final price. Blank periods are missing observations, not a zero price.
06 / RELATED FINDS
A few useful extras.
For the way you plan to use it.
Add the upper display plate
RAILBLAZA Rotating Platform R
The Rotating Platform R is a listed top accessory for the Swing Arm.
Add the deck socket
RAILBLAZA StarPort Base
This StarPort base accepts the mount’s removable star-shaped post.