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  1. Trailer Spindles
  2. TruRyde
  3. For 3500 lb Axle
  4. Standard Spindle
  5. 1-3/4 Inch Diameter
  6. Round
#84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter

#84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter

Item # TRU84FR
Our Price: $79.30
Trailer Spindles
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Shipping Weight: 6 lbs
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Replacement #84 spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Castle nut, washer, and cotter pin included. Great Prices for the best trailer spindles from TruRyde. #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter part number TRU84FR can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (14)
  • Q & A (0)
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TruRyde Trailer Spindles - TRU84FR

  • For 3500 lb Axle
  • Standard Spindle
  • 1-3/4 Inch Diameter
  • Round
  • TruRyde

Replacement #84 spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Castle nut, washer, and cotter pin included.


  • Tapered spindle replaces a worn or damaged #84 spindle on your trailer
    • Can also be used to build a custom axle
  • Weld-on installation
  • Sturdy steel construction
  • Castle nut, washer, and cotter pin included


  • Application: 3,500-lb trailer axles
  • Spindle capacity: 1,750 lbs
  • Stub dimensions: 1-3/4" diameter x 6-1/2" long
  • Overall spindle length: 11-1/4"

Bearing, Race, and Seal Information

  • Bearings (sold separately)
    • Inner bearing: L68149 (1.378" inner diameter)
    • Outer bearing: L44649 (1.063" inner diameter)
  • Races (sold separately)
    • Inner race: L68111
    • Outer race: L44610
  • Grease seal (sold separately): 58846
    • Inner diameter: 1.719"
    • Outer diameter: 2.565"

spindle diagram

Part NumberCapacityABCDEFRound/Square
TRU84FR1,750 lbs1.75"1.719"1.378"1.063"1.00"6.50"Round

SP-17584NWC-1125 TruRyde (TRP) Replacement #84 Spindle for 3.5K Axles - 1.75" Diameter x 11.25" OAL

Replaces R2061-284

Customer Satisfaction Score:

Customer Reviews

#84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter - TRU84FR

Average Customer Rating:  4.7 out of 5 stars   (14 Customer Reviews)

Replacement #84 spindle welds onto your 3,500-lb trailer axle. Works with L68149 inner bearing and L44649 outer bearing. Castle nut, washer, and cotter pin included.




One of the two boxes was damaged in shipping due to the weight. Our company called and etrailer quickly sent the missing parts.


Very well satisfied with these spindles and hubs. Much nicer than the ones being replaced . excellent service and all parts were a perfect fit. Robert


well made good price


Thanks a bunch. Good service.


I really appreciate the service you pro vided










See what our Experts say about this TruRyde Trailer Spindles

  • Compatibility of Dexter 3500-lb 5-on-5 Trailer Hub # 84550BX with TRU84FR Spindle
    The hub you referenced, Dexter 3500-lb 5-on-5 Trailer Hub # 84550BX, which comes with inner/outer bearings # L68149 and # L44649, is indeed a correct fit for the Number 84 Spindle, part # TRU84FR .
    view full answer...
  • How to Determine Which Replacement Hubs Will Fit Spindle
    There are a few different ways to make sure that you are getting the correct hub to match your spindle like the wheel bolt pattern, bearings, and weight capacity. You can either use a Digital Caliper # PTW80157 to measure the different sections of your spindle (see attached picture), or you can simply remove your current hub and locate the bearing, race, and seal numbers (on same attached picture). Once you know what the measurements or numbers are you can either filter through our selection...
    view full answer...
    Image 1 for
  • Replacement Hub For Boat Trailer Using Bearings L68149 And L44649
    The closest we have is Trailer Idler Hub Assembly for 3,500-lb E-Z Lube Axles - 5 on 4-1/2 - Galvanized # AKIHUB-545-35-G-EZ-K. This uses inner bearing L68149 (1.378" inner diameter) and outer bearing L44649 (1.063" inner diameter) that you currently have. It also has the outer race L44610 that you have. There is not a hub available that has the inner race L68110 that you have which measures 2.327". This kit includes inner race L68111 which measures 2.361". You can stick with your current...
    view full answer...
  • Recommended Tapered Spindles for 3,500 lb Axle
    Given the measurements you provided, there are three spindles we offer for a 3,500-lb axle: #84 Spindle - 1-3/4" Diameter (8-1/4" OAL) 1,750 lbs part # TRU64FR #84 EZ Lube Spindle 1-3/4" Diameter (9" OAL) 1,750 lbs part # TRU74FR #84 Spindle - 1-3/4" Diameter (11-1/4" OAL) 1,750 lbs part # TRU84FR The bearing surfaces of each of the three are the same, with the difference being the overall length of the spindle. I would recommend using a digital caliper and comparing the bearing surfaces...
    view full answer...
  • Material Used and Tensile Strength of TruRyde Spindle # TRU84FR
    According to TruRyde, the bar stock material used on spindles like # TRU84FR is SAE 1045 hot rolled. This allows the spindle to harden to an extent, but it is a medium tensile steel with a tensile strength of 570-700 MPa and Brinell hardness ranging between 170 and 210. The spindle is designed to retain a slight amount of flex to retain its durability when a trailer goes over a bump or through a hole in the road. TruRyde Spindle # TRU84FR is rated for use on 3,500 lb axles.
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  • Which Trailer Spindles Fit Trailer Hub Assembly # 84555UC1
    I have three options that will fit Trailer Hub Assembly # 84555UC1, for 3,500 lbs. Part # TRU64FR is a standard 1-3/4-inch round spindle that measures 8-1/4" in overall length. Part # TRU84FR is a standard 1-3/4-inch round spindle that measures 11-1/4" in overall length. Part # TRU74FR is an EZ lube 1-3/4-inch round spindle with a grease zerk that allows you to pump grease internally into the spindle. It also contains a brake mounting flange. It measures 9" in overall length. Installing...
    view full answer...
  • Hub and Drum Assemblies and Spindles for Dexter Electric Trailer Brakes 23-112
    The brake assembly # 23-112 is rated for 6,000 pound axles, not 3,500 pound axles. For a 3,500 pound axle you will need to look at 10x2-1/4 inch brakes such as # 23-26 for the left side and # 23-27 for the right side. These mount to a 4-bolt flange, such as # 4-34 for 1-3/4 inch round axles, or # 4-35 for 2-3/8 inch round axles. Brake mounting flanges need to be installed by a qualified professional with experience welding on brake flanges because it is a precision job requiring special...
    view full answer...
  • Do I Need to Replace #84 Spindle With Rust On Surface and What Bearing Kit Do I Need
    You should still be able to use your spindle without having to replace anything, especially because this is not in the seating areas for the bearings. Regardless, I recommend cleaning off the spindle with emery cloth to try to remove as much of the rust as possible. You'll want to take care to make sure that there is no pitting on the spindle that might damage the new bearings, which would be the only case that I recommend replacing the spindles. If you do end up needing to replace your...
    view full answer...
  • Recommended Idler Hub w/ a 5 on 4-1/2 Bolt Pattern to Replace a Hadco Drum
    We have ran into your request before. So I have an interesting solution. Your Hadco Drums use a Replacement Trailer Hub Bearing item # 501349 and a Replacement Trailer Hub Bearing item # LM67048. We have no hubs whatsoever available for this combo let alone ones as specific as you are requesting. In order to add a idler hub with a 5 on 4-1/2" bolt pattern like item # AKIHUB-545-35-K you are going to have to replace your spindles with one of the following options: #84 Spindle for 3,500-lb...
    view full answer...
  • Are #84 Spindles Threaded into the Axle?
    No, they're welded. You assumed correctly. The spindles listed below that I referenced in your previous question all have to be welded on. There are no thread on spindles. #84 Spindle for 3,500-lb Trailer Axles - 2" Diameter item # TRU24FR #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter item # TRU84FR Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide item # TRU47FR
    view full answer...
  • Adding Electric Drum Brakes To A Tandem Axle Trailer
    Yes, I can point you in the right direction, and we carry a product that will serve as a solution for you. Since the trailer you're looking to modify has never had brakes installed on it before, and since you're running a trailer with tandem 3500 lb. axles and no existing actuator, the best product recommendation is an electric drum brake system that will work with your existing brake controller, without the need to add an actuator or hydraulic lines. The Dexter # 23-468-469 brake assembly...
    view full answer...
  • Spindle Replacement Recommendation For Donahue Horse Trailer
    In order to make sure you get the right components for your Donahue Horse Trailer, we will need some more information. If you are wanting to replace the spindle, the first thing you will need to know is the weight capacity and dimensions of the axle you plan on using the spindle on. Please keep in mind that installing the spindle require welding it to the axle by a certified welder. They use special jigs so that it is concentric and square on the axle or it can cause problems with uneven...
    view full answer...
  • Replacement Spindle and Hub for my Lippert 3500# Axle
    The #84 Spindle for 3,500-lb Trailer Axles part # TRU84FR and the Trailer Idler Hub Assembly for 3,500-lb Axles part # AKIHUB-550-35-K for a 5 on 5" wheel bolt pattern or the Trailer Idler Hub Assembly for 3,500-lb Axles part # AKIHUB-545-35-K for a 5 on 4.5" bolt pattern will have you set up and ready to go.
    view full answer...
  • What is the Correct Spindle for use With Kodiak Hub-and-Rotor Assembly KHR10
    You will need to use a spindle that fits the bearing set in the Kodiak Hub-and-Rotor Assembly KHR10. This hub uses inner bearing # L68149 and outer bearing # L44649. The spindle that fits this bearing set is part # TRU84FR from TruRyde. This includes the spindle, washer, castle nut and cotter pin.
    view full answer...
  • Adding Jeep Wheels and Tires With 5 on 5" Bolt Pattern To 4' X8' Harbor Freight Trailer
    I do have a solution for you as currently our only only 5 on 5 hubs fit a larger # 84 Spindle # TRU84FR and the Dexter Axle # 20545I-ST-60-15 in your size only comes with the smaller BTR Spindle # TRU44FR. The Timbren Axle-Less Trailer Suspension System # ASR1THDS02 with a straight spindle or Timbren Axle-Less Trailer Suspension System # ASR1THDS03 with a 4" lift spindle will give you the best performance for your Harbor Freight trailer. These systems will replace your axle and suspension...
    view full answer...
  • Replacement Hub for Trailer With Timken 158123 Inner and 09067 Outer Bearing
    I looked through our selection of hubs and hub/drums, and couldn't find anything compatible with the bearings you mentioned. This leaves you with two alternatives. Number one would be to cut off your existing spindles and install spindles like # TRU84FR that would be compatible with a standard hub like # 84545BX. The hub has the same number of lugs and bolt circle as your existing hubs, so you could use the same wheels. Removing the old spindles and welding the new ones into place is best...
    view full answer...
    Image 1 for
  • Welding #84 Spindles # TRU84FR and # TRU57FR for Utility Trailer with 2-3/8 inch O.D. Pipe
    You have a 2-3/8 inch O.D. pipe so you might want to look at #84 Spindle, # TRU84FR, which has a 2 inch O.D. at the weld point and has a 1750 lb. capacity, so two spindles will give that axle 3,500 lb capacity. The #42 Spindle, TRU57FR which has a 2.25 inch O.D. at the weld point and is rated for 5,200 lbs to 7,000 lbs axles. The total capacities of the spindles are only valid if installed correctly and the axles are not broken or damaged in any way. The TruRyde #84 Spindle, # TRU47FR,...
    view full answer...
  • Availability Of 5-5 1/2 Inch Hub Assembly, Spindle, Bearings Rated For 1,750 lbs. Each
    I have the Dexter Trailer Hub Assembly - 3,500 lbs Axles - 5 on 5-1/2, # 84555UC1, which is rated at 1,750 lbs. each. The bearings, races, cap and seal included. The only other option I would have is the Dexter Trailer Hub & Drum Assembly - 3,500 lbs. Axles - 5 on 5-1/2, # 84557UC3, if you were wanting brakes. The capacity is 1,750 lbs. and comes with a 10 inch X 2-1/4 inch drum. It also comes with bearings, races, cap and seal. The spindles that are available for both hub assemblies...
    view full answer...
  • Recommendation of Trailer Hub and Drums and Axles
    The trailer hub and drum assembly # 845476UC3 includes bearings and races from Redline. They are made in China. I would assume you have 5 on 4-3/4 inch bolt pattern but you will need to replace the spindle. Welding on a new spindle is a precision trade craft requiring a special jig installed by an experienced professional. Otherwise, you could continue having the same problem. Depending on the overall length and if you currently have a round or square, that will determine which spindle...
    view full answer...
  • Available Complete Replacement Axle Kits
    Thank you for providing your hub's bearing numbers # 15123 and 09067. We do not have a hub that uses 15123 as inner and 09067 as outer bearings. Your alternatives are to cut off your existing spindles and install spindles like # TRU84FR that would be compatible with a standard hub like # 84545BX; or you could replace the entire axle. I linked our main page for complete trailer axle kits, some of which include hubs or drums and even electric brakes. For instance, part # e43SR is a complete...
    view full answer...
  • Replacement Hub, Bearings, Races, and Seals for Trailer Hub with H-1377 Bearing
    First, it does sound like, based on the measurement and information you have provided, that race # L68110, is correct since its outer diameter is 2.327 inches. This race is associated with bearing # L68149 which has an inner diameter of 1.378 inches and fits a number 84 spindle. On these spindles the diameter where the seal goes is 1.73 inches such as # TRU84FR. The seal should be a tight fit. I once had a heck of a time pulling a hub off of a trailer that was held on by the seal only!...
    view full answer...
  • Replacement Axle Spindle for Dexter P21-SLR with 76 Inch Spring Seats and 44649 and 68149 Bearings
    I reached out to Dexter and they no longer make that axle. I can confirm based on the bearing sizes you gave that you have a 3,500 lb capacity. If you determine you just want to replace the hub, I recommend the Trailer Hub and Drum Assembly for 3,500-lb Axles - 10" Diameter - 5 on 4-1/2 # 84546UC3 or # AKHD-545-35-EZ-K if you have the grease zerk integrated in the spindle. Since we can't match the spring seat to spring seat dimensions if you want to replace your axle I recommend using...
    view full answer...
  • Spindles for a Trailer Hub Assembly for 3500 lb Axle
    The following spindles will fit hub 84545BX 1. Square #84 Spindle for 3,500-lb Trailer Axles - 1-1/2" Wide (8-1/4" OAL) # TRU47FR 2. #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter (8-1/4" OAL) # TRU64FR 3. #84 Spindle for 3,500-lb Trailer Axles - 1-3/4" Diameter (11-1/4" OAL) # TRU84FR
    view full answer...
  • Parts Needed to Add Electric Drum Brakes to a 2003 Haulmark Trailer
    The first thing you are going to want to check is if the trailer axle has brake mounting flanges to attach brake assemblies to. A brake mounting flange will look like # 4-44-1 or # 4-34. If the trailer does NOT have these they will have to be welded on by a qualified professional with experience with installing flanges. It requires a special jig because the flanges have to be perfectly straight and concentric. You will also need the brake assemblies like you said, hub/drum assemblies,...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Installed by:
Kathleen M
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C

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