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  1. Boat Trailer Parts
  2. Caliber
  3. Rollers
  4. Spool Roller
  5. 3 Inch Long
  6. 2-7/8 Inch Diameter
Caliber 3" Spool Roller for Boat Trailers - 1/2" Shaft - TPO - Black
Caliber

Caliber 3" Spool Roller for Boat Trailers - 1/2" Shaft - TPO - Black

Part Number: CA85AJ
In Stock
$2.76
Retail:$4.59
You Save: 40%
Boat Trailer Parts
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Keep your boat looking sharp and loading smooth with this non-marking TPO bow roller. It installs fast, holds up in the sun and cold, and keeps your boat centered so you spend less time scrubbing and more time on the water. 1-800-940-8924 to order Caliber boat trailer parts part number CA85AJ or order online at etrailer.com. Free expert support on all Caliber products. Great prices and Fastest Shipping for Caliber 3" Spool Roller for Boat Trailers - 1/2" Shaft - TPO - Black. Boat Trailer Parts reviews from real customers.
  • All Info
  • Reviews (4)
  • Q & A (0)
  • Videos (2)
  • Photos

Caliber Boat Trailer Parts - CA85AJ

  • Rollers
  • Spool Roller
  • 3 Inch Long
  • 2-7/8 Inch Diameter
  • Plastic
  • Fits 1/2 Inch Shaft
  • Caliber

Keep your boat looking sharp and loading smooth with this non-marking TPO bow roller. It installs fast, holds up in the sun and cold, and keeps your boat centered so you spend less time scrubbing and more time on the water.


Highlights

  • Non-Marking TPO Material : Protects your boat's hull from unsightly black marks during loading and unloading.
  • Performs in Cold Weather: Maintains shape and grip even in low temps, unlike rubber or standard PVC rollers.
  • V-Design Helps Center Your Boat : Cradles boats with flat or slightly curved keels to guide them smoothly onto your trailer.
  • Durable, UV- and Chemical-Resistant: Long-lasting material won't crack, fade, or break down from sun or chemical exposure.
  • Easy Installation: Fits standard 1/2" shaft and 3" roller bracket

Features to know about

Won't Leave Black Streaks

A perfect weekend on the water doesn't have to start by discovering black streaks across the front of your boat. Rubber rollers that come with your boat trailer are usually the culprit. This non-marking TPO roller solves that problem for good. It protects the finish, keeps your bow looking sharp, and saves you the hassle of cleaning up before every trip. It's a simple swap that pays off every time you launch.

TPO vs. TPR: Which Roller Is Right for You?

Caliber 3-inch roller

Choosing between roller materials shouldn't feel like decoding a chemistry book, so here's the breakdown: TPO (Thermoplastic Polyolefin) is what this Caliber roller is made from, and it's built tough. It handles sunlight, chemicals, and heat like a champ. That means it won't fade, crack, or warp in the sun, and it won't soften up or get slick when exposed to oils or cleaners. TPR (Thermoplastic Rubber) is common in rollers from other brands. It's soft and flexible, which can make it easier to mold during manufacturing, but that softness can wear down faster under load. It also tends to leave marks on lighter hulls and doesn't resist UV rays as well as TPO does. If you boat often, park in the sun, or just want something that's going to last several seasons, go with TPO. If you don't mind replacing rollers more frequently or if you're only doing occasional launches, TPR will do just fine for you.

Built to Last All Season

Sunlight, water, weather, and chemicals can wear down rollers faster than you think, especially the cheap ones. This TPO roller holds its shape, resists cracking, and won't dry out like rubber does. That means fewer replacements, less frustration, and more peace of mind every time you hook up the trailer.

Keeps Your Boat Centered

Loading a boat solo or in windy conditions? We've all had those moments where things don't line up quite right. The spool design guides the bow into place smoothly, even when conditions aren't perfect. It takes the pressure off and helps everything feel a little more under control.

Cold-Weather Ready

Some rollers get stiff and brittle when the temps drop. TPO stays flexible and strong, so whether you're launching in early spring, late fall, or going gigging in the winter, your setup won't slow you down.

Specs

General

  • Application:
    • 3" Wide center roller bracket
  • Material:
    • TPO (Thermoplastic Polyolefin)
  • Color:
    • Black

Dimensions

  • Roller:
    • 3" wide x 2-7/8" diameter
  • Shaft Size:
    • 1/2" diameter (not included)

Functionality

  • Includes:
    • 1 TPO spool roller

Additional Info

  • Corrosion resistance: ideal for freshwater and light saltwater environments
  • Made in the USA


23230-1 Caliber Spool-Type Bow Roller for Boat Trailers - T.P.O. - 3" Wide x 2-3/4" Diameter





Video of Caliber 3" Spool Roller for Boat Trailers - 1/2" Shaft - TPO - Black

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Caliber Boat Trailer Parts - Rollers - CA85AJ

Hi, everybody, Steve here with etrailer.com. Let's take a look at our Caliber three inch spool roller for your boat trailers with a half inch shaft, and it's made of a TPO black material. So, folks, this does replace that dry rotted or cracked bow roller. It supports the keel of the boat while it's on the trailer itself. It has that half inch shaft. It's ideal for flat bottom boats.

And this is made of a TPO material. It performs way better than PVC or rubber, especially in cold weather, and it's not gonna scratch or hole. Now, I'm counting this little bitty lip. You can kinda see 'em both sticking out on both sides. I got right at that three inch wide mark.

And then diameter of this roller overall, I got right at two and 7/8 of an inch, and, of course, that shaft hole standard half inch. So, again, this is gonna work with those three inch wide roller brackets. Well, that's gonna wrap it up, folks. I'm Steven. Thanks for watching and have a great day.

.

Ratings & Reviews

4.8

4 reviews
Keep your boat looking sharp and loading smooth with this non-marking TPO bow roller. It installs fast, holds up in the sun and cold, and keeps your boat centered so you spend less time scrubbing and more time on the water.

by:

Perfect, i am refurbishing my boat trailer after setting for 30 years. It came fast too!



by:



by:



by:


4
4

See what our Experts say about this Caliber Boat Trailer Parts

  • What is the Difference in the Caliber 3" Spool Rollers?
    Hey Aiden! The main difference in the Caliber 3" Spool Rollers you were looking at is color and what they're made of. They all fit a 1/2" diameter shaft. The Caliber 3" Spool Roller for Boat Trailers item # CA52AJ in yellow and item # CA25AJ in blue are both made of PVC. They're going to be more flexible and soft but won't last as long as others made with rubber or TPO. The Caliber 3" Spool Roller for Boat Trailers item # CA75AJ is made of rubber and is just your standard replacement...
    view full answer...
  • Recommended 3" TPO Boat Roller
    Hey Kirk! TPO rollers like the Caliber 3" Spool Roller for Boat Trailers item # CA85AJ are going to hold up better and last quite a bit longer than PVC or rubber. It may leave black marks on your hull so if you're concerned about that you should go with the Caliber 3" Spool Roller for Boat Trailers item # CA52AJ, which is yellow and made of PVC. What kind of boat trailer do you have?
    view full answer...

Do you have a question about this Boat Trailer Part?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Joshua S
Video Edited:
Joshua S
Employee Dustin K
Video Edited:
Dustin K
Employee Steven C
Installed by:
Steven C
Employee Ed W
Installed by:
Ed W
Employee Sabrina W
Written by:
Sabrina W
Employee Joshua U
Video by:
Joshua U

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