A CLOSER LOOKOutdoor Accessories
Turn a compatible track into a C-size base.
RAM Track Ball Base
C-size 1.5-inch ball · T-bolt
Buyer feedback ↓The Track Ball supplies the boat-side connection for a separate RAM socket arm and display plate. Its T-bolt slides into a matching track and tightens from above.
- 1.5 inC-size ballUse matching C-size sockets≈ 1.8 nickel diameters
- 0.95 × 0.48 inL × WCompare with the track’s internal channel≈ 1.1 × 0.57 nickel diameters
- 4 lb / 3 lbStandard / heavy-duty loadInclude the display and its bracketStandard-use load≈ 3.6 × 500 mL of waterHeavy-duty load≈ 2.7 × 500 mL of water
Amazon US · C-size 1.5-inch ball · T-bolt · Retailer link
THE QUICK TAKE
Is it right for you?
This is useful when you already have a C-size RAM arm and display plate and want to move them onto a compatible kayak track. It replaces the boat-side base rather than the whole mount.
Skip it if you expect a complete fish-finder mount. The arm and upper plate are separate. The T-bolt must fit your track’s internal channel, and the track needs enough support for the load.
01 / BUYING NOTES
Before you buy.
Measure the channel below the slot.
The T-bolt head sits inside the rail. A slot that admits the threaded shaft can still have the wrong channel shape for the head.
Tighten the ball against the track.
Turn the ball clockwise to clamp the base. Check that the washer sits flat and that the ball cannot slide before attaching the screen.
02 / AMAZON REVIEWS
The buyers’ view.
What buyers like
- functionality18
- Durability9
- installation6
The small numbers are review mentions. Topics and sentiment are from Amazon’s customer-review overview.
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.
RAM® Live Ep. 22: Latest Accessories for Marine and Paddlesports
Covers the ball, arm and boat-base approach used by these mounts, alongside other RAM marine products. Match the selected plate and ball size to your setup.
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
RAM identifies a C-size ball with a friction washer and T-bolt. Installation tightens clockwise and loosens counterclockwise; the rail profile must match the supplied bolt.
The selected RAP-354U-TRA1 contains the track-ball base and track hardware. A socket arm, display plate and fish finder are separate.
04 / COMPARE
Different priorities.
Choose the tradeoff that fits how you will use it.
Swipe to see every alternative →
THIS GUIDERAM Track Ball BaseRAP-354U-TRA1 |  ALTERNATIVERAM Tough-Claw LargeRAP-401U |  ALTERNATIVEScotty 168 Track BallExact selected model | |
|---|---|---|---|
| Amazon price | $19.99 | $72.99 | $49.78 |
| Best for | Adding a track base to existing C-size gear | A removable base on a supported round rail | A Scotty ball arm on a rail |
| System | T-bolt base with a C-size ball | Large padded clamp with C-size ball | Ball above a track fastener |
| Installation | Check internal rail channel clearance | Measure the rail and check jaw contact | Secure in a compatible Scotty track |
| Consider | Arm and display plate are separate | Needs a separate arm and plate | No arm or screen plate included |
| 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.
RAM Track Ball Base · C-size 1.5-inch ball · T-bolt · 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.
Join the two C-size balls
RAM C-Size Short Double Socket Arm
This short arm connects a matching boat-side ball to the display plate’s ball.
Add the display-side plate
RAM Marine Electronics Ball Base
This rectangular marine plate supplies the upper C-size ball and bracket attachment.