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  3. 4 on 4 Inch
  4. For 2500 lbs Axles
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  7. 10 Inch Wheel
  8. 12 Inch Wheel
  9. 13 Inch Wheel
  10. 14 Inch Wheel
Trailer Idler Hub Assembly for 2,500-lb Axles - 4 on 4 - L44643 Bearings - Pre-Greased
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TruRyde

Trailer Idler Hub Assembly for 2,500-lb Axles - 4 on 4 - L44643 Bearings - Pre-Greased

Part Number: TRU78AV
In Stock
$42.14
Trailer Hubs and Drums
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Hub is designed for use on trailer idler axles. Fits 2,500-lb axles with BTR spindles. Inner bearing (L44643) and race, outer bearing (L44643) and race, grease seal, grease cap, and lug nuts included. Great Prices for the best trailer hubs and drums from TruRyde. Trailer Idler Hub Assembly for 2,500-lb Axles - 4 on 4 - L44643 Bearings - Pre-Greased part number TRU78AV can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (2)
  • Q & A (0)
  • Videos (2)
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TruRyde Trailer Hubs and Drums - TRU78AV

  • 4 on 4 Inch
  • For 2500 lbs Axles
  • Idler Hub
  • 8 Inch Wheel
  • 10 Inch Wheel
  • 12 Inch Wheel
  • 13 Inch Wheel
  • 14 Inch Wheel
  • Pre-Greased
  • Standard
  • L44643 / L44643
  • Standard Grade
  • 1/2 Inch Stud
  • TruRyde

Hub is designed for use on trailer idler axles. Fits 2,500-lb axles with BTR spindles. Inner bearing (L44643) and race, outer bearing (L44643) and race, grease seal, grease cap, and lug nuts included.


Highlights

  • Fits 2,500-lb Axles: For idler setups using BTR spindles with L44643 inner/outer bearings.
  • Pre-Greased and Ready to Install: Includes bearings, races, seal, grease cap, and lug nuts.
  • 4 on 4" Bolt Pattern: For wheels using 1/2" studs; supports 8" - 14" wheel sizes.
  • Built to Resist Rust and Wear: Zinc-enriched drum paint and zinc-finished bolts resist corrosion.

Specs

Application:

  • Application: 2,500-lb trailer axles with BTR spindles
  • Compatible with: Standard axles from most manufacturers, including Dexter, Lippert (LCI), and AL-KO

Wheel Compatibility:

  • Wheel size: 8" to 14"
  • Bolt pattern: 4 on 4"
  • Wheel stud dimensions: 1/2" diameter x 1-5/16" long
  • Grease cap flange diameter: 1.988"

Weight and Capacity:

  • Weight capacity: 1,250 lbs

Warranty:

  • Limited warranty: 1-year

Bearing, Race, and Seal Information:

  • Bearings (included):
    • Inner bearing: L44643 (1.063" inner diameter)
    • Outer bearing: L44643 (1.063" inner diameter)
  • Races (included):
    • Inner race: L44610
    • Outer race: L44610
  • Grease seal (included): 10-9
    • Inner diameter: 1.50"
    • Outer diameter: 1.987"


PP-RVIK-1PG Tru Ryde Trailer Idler Hub Assembly for 2.5K Axle with Hardware - 4 on 4 - Pre Greased





Video of Trailer Idler Hub Assembly for 2,500-lb Axles - 4 on 4 - L44643 Bearings - Pre-Greased
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Talking Pre-Greased Trailer Hub and Drum Assemblies with TruRyde

Hello neighbors, it's Brad here from Etrailer and today we are in Fort Worth, Texas at the National Association of Trailer Manufacturers Convention 2026, where we have quite a few of our vendors that we have at etrailer. And let's put a face to the name of those companies and also see what products they offer. I'm here with Ted from TRP and Ted, what is TRP We are one of the leading suppliers of axle and suspension components for the light and medium duty trailer market. So we supply axle manufacturers, trailer manufacturers, and aftermarket distributors with everything you need to make an axle or repair an axle. And you guys are based in Elkart We are corporately based in Elkhart with the second location here in Dallas-Fort Worth. Awesome, so, yeah, I mean home of the RV capital of the world.

So if you guys are supplying oe, you can stand behind your products and also if they're willing to put your product on there. Yes, that's right. It's a good sign. So as far as some of your offerings for etrailer, what all do you guys have So I think one thing we'd like to talk about today is our pre-greased idler hub and break drums. We bring that product in from our factories and then we put the bearings in, we grease them, we do the quality controls all here stateside.

So the customer can be guaranteed that it's an ISO certified facility doing the work. We've got, actually, we've got a quality control engineer that checks first articles, last articles, random checks. So the chances of a bad part going out of our doors is pretty low. So a customer's gonna get an easy to do idler hub or break drum swap knowing the bearings are greased properly. Yeah.

And there's something to be said about that. I've changed out bearings and you know, you grease and you go, I think that was enough. You know, and I think I got it all torqued down. And that's the thing, it's like I get it to do small little components, but sometimes I've learned as I've worked on cars to get a whole assembly, that's all set up that you have confidence that it's packed right, it's pressed right, everything's good to go. So as far as if someone was to replace that whole assembly, pretty simple, right Yeah, it really is.

You know, it's a backing off of the pull out the cotter pin, take off the nut and washer, pull the whole assembly off, open the box. One thing that's unique about ours is we have a thermoformed cap that goes over the nose cone to protect any contaminants from getting into that grease. So the customer's gonna be really confident they're getting a good part. All the components, the dust cap, the wheel nuts, everything are in there for install of the wheel after you're done. That's awesome. Well and that's something when it's a preassembled like that, yeah, if you're out, oh man, I gotta get the trailer back on the road. You could, you could do it in 10, 15 minutes, if you're good. You can do it on the roadside. Yeah. And a lot of our customers, customers who, their trailer is an occupational piece, this isn't a hobby trailer, they're on the road every day, keeping an extra brake drum in the truck or even on the trailer is a lifesaver. You find yourself broke down on the side of the road 'cause you smoked a bearing or something went wrong, being able to change that real time and keep going, the customer still wants their load that's on the back of your trailer. And we hope to be able to help people do that. You're a hundred percent right and you're right to have a spare one, I've seen a lot of trailers on the side of the road and I go, good luck bud. You're to find those parts while stuck on the road, you're gonna be stuck and- It's a hundred dollars investment to keep yourself from a thousand dollars tow job. Yep. Peace of mind. Right. And again, when it's occupational, it's an investment worth making in our opinion. Yeah. Time is money. That's right. Awesome. Thank you so much, I appreciate it. Yeah, speaking of time and money, let's go make some. Let's do it. See you buddy.

Ratings & Reviews

4.5

2 reviews
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Hub is designed for use on trailer idler axles. Fits 2,500-lb axles with BTR spindles. Inner bearing (L44643) and race, outer bearing (L44643) and race, grease seal, grease cap, and lug nuts included.

by:



by:

Great product installation was a breeze


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See what our Experts say about this TruRyde Trailer Hubs and Drums

  • Replacement Hub and Bearings for Boat Trailer
    Hey Robert! For pre-greased hubs you can use the # TRU78AV with a 4 on 4 bolt pattern or # 34822545BX with a 5 on 4-1/2 bolt pattern. If you want ungreased, the best route is the galvanized hubs # AKIHUB-440-2-G-EZ-1K (4 on 4) or # AKIHUB-545-2-G-1K (5 on 4-1/2). All of these are designed to fit your spindle with # L44643 inner and outer bearings. What kind of boat trailer do you have?
    view full answer...

Info for this part was:

Employee Joshua S
Video Edited:
Joshua S
Employee Matthew S
Written by:
Matthew S
Employee Amanda M
Updated by:
Amanda M
Employee Michael B
Updated by:
Michael B
Employee Katherine B
Edited by:
Katherine B
Employee Andy C
Installed by:
Andy C

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