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  1. Trailer Hubs and Drums
  2. Dexter
  3. 8 on 6-1/2 Inch
  4. For 5200 lbs Axles
  5. For 6000 lbs Axles
  6. For 7000 lbs Axles
Dexter Trailer Idler Hub Assembly - 5,200-lb, 6,000-lb and 7,000-lb Axles - 12" - 8 on 6-1/2

Dexter Trailer Idler Hub Assembly - 5,200-lb, 6,000-lb and 7,000-lb Axles - 12" - 8 on 6-1/2

Item # 42865-KIT
Our Price: $95.43
Trailer Hubs and Drums
This item qualifies for Free Shipping
Shipping Weight: 21 lbs
In Stock
Dexter 8 on 6-1/2 Inch Trailer Hubs and Drums - 42865-KIT
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Hub is designed for use on trailer idler axles. Fits 5,200-lb to 7,000-lb axles with spindles that require a 2-1/8" ID grease seal. Inner bearing (25580) and race, outer bearing (14125A) and race, seal, cap, wheel bolts, and lug nuts included. Great Prices for the best trailer hubs and drums from Dexter. Dexter Trailer Idler Hub Assembly - 5,200-lb, 6,000-lb and 7,000-lb Axles - 12" - 8 on 6-1/2 part number 42865-KIT can be ordered online at or call 1-636-306-4830 for expert service.
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  • Reviews (14)
  • Q & A (0)
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  • Why etrailer?

Dexter Trailer Hubs and Drums - 42865-KIT

  • 8 on 6-1/2 Inch
  • For 5200 lbs Axles
  • For 6000 lbs Axles
  • For 7000 lbs Axles
  • Hub
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Standard
  • 1/2 Inch Stud
  • 14125A
  • 25580
  • Dexter

Hub is designed for use on trailer idler axles. Fits 5,200-lb to 7,000-lb axles with spindles that require a 2-1/8" ID grease seal. Inner bearing (25580) and race, outer bearing (14125A) and race, seal, cap, wheel bolts, and lug nuts included.


  • Trailer hub assembly fits idler axles
    • Bearings, races, seal, grease cap, wheel bolts, and lug nuts are included
  • Sturdy iron construction
  • Zinc-enriched paint finish
  • Hub and drum are made in the USA


  • Application: 5,200-lb to 7,000-lb trailer axles with spindles that require a 2-1/8" ID grease seal
    • Also fits spindles that take a 2-1/4" inner diameter grease seal - requires RG06-070 (sold separately)
  • Wheel size: 16" to 17-1/2"
  • Bolt pattern: 8 on 6-1/2"
  • Grease cap flange diameter: 2.72"
  • Wheel stud diameter: 1/2"
  • Weight capacity: 3,500 lbs

Bearing, Race, and Seal Information

  • Bearings (included)
    • Inner bearing: 25580 (1.75" inner diameter)
    • Outer bearing: 14125A (1.25" inner diameter)
  • Races (included)
    • Inner race: 25520
    • Outer race: 14276
  • Grease seal (included): GS-2125DL
    • Inner diameter: 2.125"
    • Outer diameter: 3.376"

Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.

Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: 8 on 6-1/2 means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)

Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: 5 on 4-1/2 means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)

Bolt Pattern - Side

Measuring the distance (D) from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"

K08-231-92 Dexter Trailer Idler Hub Assembly for 5.2K to 7K Axle with Hardware - 8 on 6-1/2

Replaces 42865UC1 and 42865-KIT

Customer Satisfaction Score:

Customer Reviews

Dexter Trailer Idler Hub Assembly - 5,200-lb, 6,000-lb and 7,000-lb Axles - 12" - 8 on 6-1/2 - 42865-KIT

Average Customer Rating:  4.1 out of 5 stars   (14 Customer Reviews)

Hub is designed for use on trailer idler axles. Fits 5,200-lb to 7,000-lb axles with spindles that require a 2-1/8" ID grease seal. Inner bearing (25580) and race, outer bearing (14125A) and race, seal, cap, wheel bolts, and lug nuts included.


It took forever to get the parts I had ordered. And after speaking with someone to ensure the parts would match, I still received spindles and hubs that would not fit. I tried to call and email and got no response.


Shipped fast, I used these hubs to upgrade from a 5 lug agricultural lug pattern, sent etrailer my bearing and seal sizes and they where able to tell me what hubs would work for me.


All the material is top notch, my only issue is the packing, The last order had a hub and extra bearings and 3 seals. The seals were on the bottom under the hub, and one edge of one seal was bent a bit. I fixed it and it worked fine, but any further damage I would have to order a seal or go buy one local delaying putting that hub on. Your cost is better than what I can get in Orange, the little extra time to wait is worth it. The goose neck receiver I bought and the brake break away kit can with the battery on top of the heavy pipe, thus if someone had turned the box upside down the brake away kit would have been damaged. A piece of foam insulation between would have been cheap insurance.

as it should
Ronald J - 04/03/2021


The hubs themself seem heavy and very nice but the shipping was very bad. The boxes were destroyed luckily the smaller parts were in a bag or they would’ve been lost. One box had a big hole missing the other boxes were damages. Hubs were loose in box and nothing to keep hub from moving around in boxes. Desiccant bag was ripped open and everywhere.

I apologize about the state of the boxes. I am glad that nothing was lost or damaged.
-- Etrailer Expert Sierra K - 08/24/2021




You can ALWAYS count on the wonderful people and quality of products, in regards to Etrailer.

Have ordered many times from them and always totally satisfied.

In this case, I ordered trailer rail support pieces for my heavy, custom 3 pontoon fishing boat.

Can't wait to get everything mounted and load the boat for the first time with all the new upright rollers and rail supports... all from Etrailer!

Thanks, Etrailer!


all items appear to be of good quality
was good, contact person was very helpful and followed up with my concerns
thank you all.


Hub kit worked great and had no problems on installation
Great buy to convert my hubs


Gary C







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

  • Installation of Idler Hub on 7,000 lb EZ Lube Axle
    I took a look at the installation instructions in regards to using a the nut retainer as opposed to a cotter pin and it specifies: "1) Finger tighten the nut until just snug ... Once in place the retainer/nut assembly should be free to move slightly. 2) If the nut is too tight, remove the the retainer and back the nut off approximately one twelfth of a turn and reinstall the retainer. The nut should now be free to move slightly."
    view full answer...
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  • Will TruRyde Spindle TRU57FR Fit Dexter Trailer Hub Assembly 42865-KIT
    The TruRyde #42 Spindle # TRU57FR is compatible with the Dexter Trailer Hub Assembly # 42865-KIT. Since the hub uses bearings 25580 and 14125A, whose inner diameters match up to the spindle dimensions, the hub will work on the spindle. Spindles need to be professionally welded on perfectly straight and concentric to ensure you do not have issues with trailer tracking or uneven tire wear.
    view full answer...
  • Would Trailer Hub # 42865-KIT and Hub & Drum Assembly # 42866UC3 Work Well Together
    Yes, the Trailer Hub Assembly # 42865-KIT and the Trailer Hub & Drum Assembly # 42866UC3 would work well together for having a brake axle and an idler axle. The both have the same bolt patterns, weight capacities, and use the same bearings so they would work very well together. I would recommend you install the brake axle on the axle closest to your tow vehicle. I attached a video of how to remove and re-install hubs from a spindle.
    view full answer...
  • Lug Nut Recommendation for a 1/2 inch Studs on Kodiak Disc Brake Kit
    The taper of the lug nuts should take up the .062 difference between the 9/16 inch hole and the 1/2 inch wheel stud, allowing the lug nuts to tighten with no problem. For acorn nuts to fit a 9/16 inch stud you would want the part # 12CLN, or for an open nut you would want part # CE11051. Either of these would work fine for you.
    view full answer...
  • Off Road Axle Recommendation for Trailer for 8 on 6-1/2 inch Bolt Pattern Hub
    The Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR35HDS02 will be perfect for you. It's got a 4 inch lift built into it and is set up for wider tires so it's ideal for off-road applications. And then for a hub with the 8 lug pattern that you need you would want the part # 42865-KIT that you referenced.
    view full answer...
  • Does Kodiak Disc Brake Kit K2R79E Fit Dexter Axle 4766709
    The Dexter Axle 4766709 you mentioned is a 7,000 lb straight axle that is 88 inches long which is exactly what the Kodiak disc brake kit part # K2R79E is designed to fit. This is designed to fit 7k rated idler hubs with an 8 on 6-1/2 inch bolt pattern like the Dexter part # 42865-KIT which also is a fit for your axle.
    view full answer...
  • Which Spindle is Used with Trailer Hub Assembly, Part # 42865UC1
    There are two spindle options for the Trailer Hub Assembly, part # 42865-KIT. The spindle used would depend on the capacity of your axle. For a 5000 pound axle, use part # TRU57FR. For a 5200 pound axle, you would use part # TRU37FR. The TRU37FR is an EZ lube spindle with the zerk fitting for adding grease to the bearing assemblies.
    view full answer...
  • Replacement Hub Assembly for Axle with 1-1/4 Inch Diameter Outer and 1-3/4 Inch Inner Bearing
    If you do not need electric brakes on your axle, I recommend the Dexter Trailer Hub Assembly # 42865-KIT. This assembly includes the # 25580 inner bearing, the # 14125A outer bearing, and a grease seal with a 2-1/4 inch inner diameter needed for the spindle on your existing axle. Also included with the assembly are the races, grease cap, wheel bolts, and lug nuts. The hub has a 8 on 6-1/2 wheel bolt pattern. One hub assembly is included for the part number. You would want 2 of the # 42865-KIT...
    view full answer...
  • Difference Between Dexter 8 on 6-1/2 inch Trailer Hubs # 8-231-9UC1-EZ and # 42865-KIT
    The difference between the two trailer hubs you referenced part # 8-231-9UC1-EZ and # 42865-KIT is that the # 42865-KIT comes with two different grease cap styles and the # 8-231-9UC1-EZ only comes with one, the EZ lube style that has a rubber plug that can be removed for easy access to the zerk fitting of the spindle for greasing. The # 42865-KIT comes with a EZ style cap as well as a standard grease cap. I attached review videos for both hubs for you to check out as well.
    view full answer...
  • Replacement Trailer Hub for Dexter 8-155
    If you need the 4 lug option you have then no we don't have anything that would work, but based on the # 8-201-5UC3-EZ being a suitable replacement we also know the part # 42865-KIT would too and it does cost less. It is an 8 on 6-1/2 inch bolt pattern.
    view full answer...
  • Ford F-350 Dummy Tag Axle Using Timbren Trailer Axle with #42 Spindle and 8 on 6-1/2 hub
    Here is what I would recommend. While all your options would require a lot of modification, the Timbren ASR400S02 only offers 1" of deflection (suspension travel) which would more than likely be easily damaged when driven. I would say to use the Timbren # ASR1THDS01. It offers the most deflection of 3-3/8". That should limit the chance of damage when the main suspension does travel. Timbren doesn't offer any #42 spindles for for this particular item. I recommend having #42 Spindle # TRU57FR...
    view full answer...
  • Which Idler Hubs Will Work the Trailer Axle Beam # e45GR
    Depending on the size of your wheel and the bolt pattern we do have some different options for an idler hub for the Trailer Axle Beam # e45GR. If your wheel size is 14" - 16 1/2" and the bolt pattern is 6 on 5 1/2", you can use an idler hub like the Dexter Trailer Idler Hub Assembly for 5,200-lb Axles - 6 on 5-1/2" # 8-213-5UC1. If your wheels are 16" - 17 1/2" and the bolt pattern is 8 on 6 1/2", you can use an idler hub like the Dexter Trailer Idler Hub Assembly - 5,200-lb, 6,000-lb and...
    view full answer...
  • Availability Of A 95 7000lb Replacement Axle
    I may have an option for you, but there is not a 7000lb axle that can be used with hubs that use the 5 on 4-1/2 bolt pattern. We offer the Dexter Trailer Axle Beam with E-Z Lube Spindles - 95" Long - 7,000 lbs # 8327834 which is 95" long measured hub face to hub face, and has a spring center to spring center measurement of 80" as shown in the included diagram. If you need to move the spring centers to match your trailer you can remove the current ones and weld the # TRSS300 in the correct...
    view full answer...
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  • Weight Capacity of Trailer When Using Two 5,200 Lb Dexter Trailer Axle Beams Without Hubs
    The Dexter Trailer Axle Beam part # 8327820 has a 5,200 lb weight capacity. Therefore, for a tandem axle trailer this will be doubled and then if you add another 10-15% for tongue weight you'll get your gross vehicle weight rating (GVWR) which is the most the trailer can weigh loaded. In regards to hubs, you cannot use a pair from a 3,500 lb axle as they don't have the same bearings, you'll need new hubs for a 5,200 lb axle. The Dexter Trailer Idler Hub Assembly part # 42865-KIT without...
    view full answer...
  • Hub that Fits Same Spindle as Hub/Drum # 8-219-4UC3
    The part # 8-219-4UC3 is a hub/drum but for a hub without the drum that would fit the same spindle you would want the part # 8-231-50 and then would need to provide the seal part # RG06-090 as it does not come with seals and this is the same as what you need.
    view full answer...
  • Compatible Parts to Convert Lippert 7K Axle to Electric Over Hydraulic Brakes
    Your Lippert 7K axle would use a 25580 inner and an 14125A outer bearing, so the # 42865-KIT hub you'd looked at would be compatible. The Kodiak # K2R712DAC slip-on disc brake kit is compatible with the 8 on 6-1/2 inch bolt pattern used by the hubs you'd chosen and the 5 bolt caliper mount is compatible with the bolt pattern on the brake mounting flange on your axle. The # HS496-252 brake line kit looks to be a good choice. The Titan BrakeRite I Plug and Play Electric-Hydraulic Actuator...
    view full answer...
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  • Compatibility of Kodiak # K2R79 Disc Brake Kit with 5th Wheel w/ Tandem 7K Dexter Axles
    The Kodiak # K2R79 disc brake kit is designed to slip over an idler hub, not a hub drum. A 7K Dexter axle uses the 25580 inner bearing and a 14125A outer bearing with a 10-36 grease seal. To make that particular kit work, you'd need to remove the existing hub drum and electric brake assembly and install an idler hub that's compatible with your existing axle spindles, like part # 42865-KIT. You'd be better off going with a hub/rotor kit. I'd recommend using the Kodiak # K2HR712E and the...
    view full answer...
  • Available 8-Lug Trailer Hubs for Spindle TRU67FR
    None of the available 8-on-6-1/2 hubs use the bearings required for a fit on agricultural spindle # TRU67FR. That spindle requires a hub that uses bearings 506849 and 501349. We have one hub that fits that spindle, part # AH60880FCOMP, but this has an 8-on-8 bolt pattern. We do offer trailer hubs with the 8-on-6-1/2 wheel bolt pattern. These include both hub/drums like Dexter # 42866UC3-EZ and idler hubs like # 42865-KIT and all appear on the linked page.
    view full answer...
  • Correct Timbren Silent Ride Suspension System for a [email protected] Tear Trailer
    According to my research, your [email protected] trailer has torsion axles which means the Timbren Silent Ride Suspension System like part # TSR3500S05 will not be a good fit for you. Instead, you will want to use the Timbren Heavy-Duty Axle-Less Trailer Suspension part # ASR35HDS02. This kit will replace the torsion axles you have now and provide up to a 4" lift and the ability to run larger off-road tires. For a compatible hub you will also need the Dexter Trailer Idler Hub Assembly part # 42865-KIT.
    view full answer...
  • Trailer Hub and Wheels for Inner Bearing 25580 and Outer Bearing 14125A
    We have hubs that have a seal and bearings that are very close to the measurements you gave. The closest are Grease Seal # GS-2250DL, which has a 2.25" inner diameter, Inner Bearing # 25580, which has a 1.75" inner diameter, and Outer Bearing # 14125A, which has a 1.25" inner diameter. For that you will need Dexter Trailer Idler Hub Assembly - 5,200-lb, 6,000-lb and 7,000-lb Axles - 12" - 8 on 6-1/2 # 42865-KIT for an idler hub or Dexter Trailer Hub and Drum Assembly for 5,200-lb to 7,000-lb...
    view full answer...
  • Recommended Hub and Drum and Brake Assemblies for Mobile Home Axles on Trailer
    For your front axle, I recommend the Dexter Trailer Hub and Drum Assembly # 42866UC3. Then for your brakes, I recommend # 23-105 for the left hand (driver's side) and # 23-106 for the right hand. If you have hydraulic brakes, then I recommend # 23-324 and # 23-325 instead. For your rear axle, I recommend the Dexter Trailer Idler Hub Assembly # 42865-KIT. If you need tires to match the hubs, I recommend the Westlake ST235/80R16 Radial Trailer Tire w/ 16" Silver Mod # LHAW133. These...
    view full answer...
  • Replacing Trailer Hubs with 1.25", 1.75" Bearings and 2.3" Seal Measurements on Spindle
    Thank you for the measurements! From the info you gave me it sounds like you have axles rated somewhere between 5,200 lbs - 7,000 lbs. For this we have the following: Idler hub with 6 on 5-1/2" bolt pattern - # 8-213-5UC1-EZ Idler hub with 8 on 6-1/2" bolt pattern - # 42865-KIT Hub and Drum with 6 on 5-1/2" bolt pattern - # 8-201-9UC3-EZ You will need to use grease seals # RG06-070 for these Hub and Drum with 8 on 6-1/2" bolt pattern - # 42866UC3-EZ All of these kits have bearings that...
    view full answer...
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  • Upgrading Dexter 8-222 Trailer Hubs
    The Dexter 8-222 was used on a mobile home axle, according to my research. Mobile home axles are meant for a one time use, so there aren't compatible replacement hubs available. If you need replacement bearings and seals, you will use # L68149 for the inner and # LM67048 for the outer. For the Grease Seal you will need # 10-40. If you can provide the hub face to hub face and spring center to spring center distance, we might have an off the shelf replacement axle that uses common bearing...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Laura H
Written by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L

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