EZ Lube Spindle 1.25 RD STUB - 1.06" Bearing ID

EZ Lube Spindle 1.25 RD STUB - 1.06" Bearing ID

Item # R104BTREZ

lowest price pledge


Our Price: $34.74

You Save: 28%
Trailer Spindles

Orders above $99 qualify for Free Shipping

Shipping Weight: 3 lbs

Redline 4 Inch Long Trailer Spindles - R104BTREZ
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

pop out icon replay 360 icon
horizontal rotate icon

Product Images

Redline 4 Inch Long Trailer Spindles - R104BTREZ
R104BTREZ - 4 Inch Long Redline EZ Lube Spindle
R104BTREZ - 1-1/4 Inch Diameter Redline Trailer Spindles
R104BTREZ - 1-1/4 Inch Diameter Redline EZ Lube Spindle
Redline EZ Lube Spindle - R104BTREZ


  • For 2000 lb Axle
  • EZ Lube Spindle
  • Round
  • 1-1/4 Inch Diameter
  • 4 Inch Long
  • Redline
Lowest Prices for the best trailer spindles from Redline. EZ Lube Spindle 1.25 RD STUB - 1.06" Bearing ID part number R104BTREZ can be ordered online at etrailer.com or call 800-298-8924 for expert service.

  • All Info
  • Reviews (11)
  • Q & A (57)
  • Videos (1)
  • Photos
  • Why etrailer?

Redline Trailer Spindles - R104BTREZ

Trailer Axle Spindle - EZ Lube

Part No. Capacity A B C D E F Round/Square
R104BTREZ 1000 lb 1.25 1.50 1.06 1.06 1.00 4.00 Round - E-Z Lube

Video of EZ Lube Spindle 1.25 RD STUB - 1.06" Bearing ID

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

Video Transcript for Redline Trailer Spindles - EZ Lube Spindle - R104BTREZ Review

Today were going to review part number R104BTREZ. This is the Redline EZ Round Spindle. This spindle is an EZ design spindle and basically what that means is it will have a grease zerk fitting on the end of the axle and that will allow you to put a grease gun on there and pump grease in through the internal cavity of the spindle and it will come out this hole right here which is located on the inner bearing surface. Well actually grease your bearings just by pumping grease from the outside as compared to a normal traditional spindle which would not have the zerk fitting and you would have to remove the bearings and have to grease them manually and put them back on. This way you can just grease them while theyre on the trailer. Now this spindle does use a bearing kit which is part number BK1-150, which is sold separately.

That bearing kit will include the inner/outer bearings and their races, the grease seal and everything needed to install onto your spindle. On this spindle there are a few critical measurements that need to be taken and I do a have digital caliper here since the measurements will in /100s of an inch to get a correct measurement. The first measurement is the length of the mounting. This will be mounted onto your axle so the length of the mounting dimension would be 4 inches. Then were going to do the diameter of that mounting dimension and that would be 1.250.

Next measurement would be this part right here and this is the grease seal dimension. On this spindle will be 1.50. The next dimension is this part right here which is the inner seal bearing surface and on that would be 1.06. Next dimension would be out here which is the outer bearing surface and that would be also 1.06. The last measurement would be the diameter of the threaded portion of the spindle which is this part right here and that would be 1 inch even.

Again, this spindle does come with the castle nut, the tang washer, which is a type used for EZ Lube spindles and the D-design washer. That should do it for part number R104BTREZ. .

Customer Reviews

EZ Lube Spindle 1.25 RD STUB - 1.06" Bearing ID - R104BTREZ

Average Customer Rating:  5.0 out of 5 stars   (11 Customer Reviews)



Great service, good product, best price 308001


They are going great, thank you. Would like to buy more soon.

Don - 10/17/2017




Super service, good products 308000


They are going great, thank you. Would like to buy more soon.

Don - 10/17/2017




The ez-lube spindles arrived on time and as advertised. A quick fitment check indicate they will be a simple weld in repair. Its nice to have a single source for trailer repair and the part number/mating part references on your site are very helpful. The video reviews are also very helpful. We will be doing more business in the future. 265479


UPDATE: One year into service the axle spindles continue to perform well. WIth no problems.

Mike F - 06/27/2017




Good easy to install 201287


Good no problem.

Al - 06/18/2016




Received my order promptly and it was great quality. Very easy online ordering, good product description, will use this vendor in the future. 170897



Very happy with the items I order. Will shop again at etrailer! 128696



Excellent quality, service and delivery ... 116925



Actually using this spindle and hub for a wind turbine. I have bought from etrailer over the years. Always satisfied. Good service and support. Good quality products like this Dexter spindle and hub. Quick delivery. Will come back!!! 116141



very pleased. the help I got and the service are above and beyond my expectations. this has been and will be my first and only stop to shop. will be telling all friends and family. 109449



best way to build a axle great company great service 59305



I have purchased ifems from eTrailer.com in the past and have always had good cutover support. It's been several years since my last purchase from them until this most recent purchase. eTrailer.com has stepped up their customer service even more!! Great communication letting me know they had received my order-when it shipped and when to expect it-and even follow-up to make sure I was satisfied. On top of that they shipped quickly and I received my items faster than predicted. Awesome company 40630


This is a wonderful purchase.E Trailer.com is very much boat trailer parts miami appreciated to up their customer service more.

-- comment by: hafizul - 12/29/2013


Ask the Experts about this Redline Trailer Spindles

  • How to Determine The Correct Replacement Trailer Hubs by Bearing Numbers or Spindle Size
  • The best way to determine which replacement hubs you need for your trailer would be to remove one of the hubs and retrieve the bearings. Find the numbers stamped into the bearings and with those we will be able to get you the correct hubs. If you are unable to retrieve the bearing numbers, you can take measurements of the spindle. I have included a link to our spindle main page. At the top of the page is a diagram showing all of the measurements we would need to find the correct hubs...
    view full answer...

  • Troubleshooting Hub and Spindle Not Fitting Together after Replacing Spindle on a Utility Trailer
  • It sounds and looks to me like you have the wrong hub assembly for the spindle that is welded to the axle on your trailer. The photos you sent clearly show a 1-1/16 inch spindle similar to the EZ Lube Spindle 1.25 RD STUB - 1.06 inch Bearing ID, item # R104BTREZ. This is a spindle for a 2,000 pound axle. The parts that you referenced are for a 3,500 pound axle and definitely will not work on a spindle designed for a 2,000 pound axle. In addition, the photo of the hub that you sent looks...
    view full answer...

  • How to Determine the Correct Grease Seals to Order for a 2002 EZ Loader 21 Foot Boat Trailer
  • To determine the correct grease seal for your trailer spindle and hub, we need to know the inner bearing number installed on the trailer or the dimensions of the seal surface on the spindle and the seal surface in the back of the hub. This will require removing one of the hubs and the grease seal in that hub. If you cannot find the inner bearing part number, you will need a precise measuring tool like a dial caliper to get measurements accurate enough to select the correct grease seals. Boat...
    view full answer...

  • Availability of Bearings, Seals, and Cap For 2002 Trailstar Trailer
  • The best way to determine the correct parts for your 2002 Trailstar trailer is to disassemble a hub on one side of the trailer and get the bearing part numbers that are stamped on the bearings. There is an inner and outer bearing. With these part numbers I will be able to determine the bearings, seals, and other parts you might need for your trailer. I looked up the Trailstar trailers and it looks like they use the EZ Lube hubs. The EZ Lube system will have a zerk fitting on the end...
    view full answer...

  • Grease Seal and Cap for 5 Lug Trailer Hub with Grease Fitting
  • It sounds like you have an EZ-Llube spindle, # R104BTREZ, for a 2,000 lb axle made by Dexter Axle. You should check your axle capacity to be sure. If this is the correct spindle the matching matching seals would be the # RG06-020 grease seals, and the matching grease caps would be the # RG04-040 caps with plugs for the EZ-Lube spindle. If you measure the diameter of the seal surface in the hub you should get 1.987 inches and the diameter of the grease cap surface should measure 1.986...
    view full answer...

  • EZ-Lube Spindle for L44649 Bearing and 10-60 Grease Seal
  • On the spindle # R104BTREZ, the 1.25 inch refers to the diameter of the stub, not to any of the bearing surfaces, which might be what is confusing you. (See photo). If you currently have the # 8-271-7UC3-EZ hubs that use the L44649 inner and outer bearing, the # R104BTREZ would be the compatible EZ Lube spindle. Part # BK1-150 would be the correct bearing/ seal kit that uses the double-lip seal which we recommend for the EZ-Lube spindles. For your hub bore, you would use the grease cap...
    view full answer...

  • Need Replacement Trailer Idler Hub for 3500-lb Axle Using Outer Bearing # L44649
  • If your current axle is rated at 3500-lbs and your hubs use a 5-on-4-1/2 bolt pattern and outer bearing # L44649, then we have two options for replacement hubs. These hub kits include the hub and wheel stud assembly, lug nuts, grease seal, pre-installed inner and outer races, inner and outer bearings, and a grease cap. It is usually very hard to measure used grease seals since by the time they are removed from the spindle they can become deformed or misshapen. Original part numbers...
    view full answer...

  • Replacement 1-1/16 Inch Straight Spindle Recommendation
  • It sounds like you are just needing BTR EZ Lube Spindle # R104BTREZ for your trailer axle. This straight spindle features 1.06 (1-1/16) inch diameters where the inner and outer bearings sit. It also has a 1.500 inch diameter for the grease seal. If you need a complete bearing kit, you can use # BK1-150. I have attached a short video demonstration on this spindle that you can also check out. I do recommend having a qualified welder both remove your current spindle and install the new one.
    view full answer...

  • Hubs and Spindles to Go with 5.70-8 Trailer Tire and Wheel Combo with 4 on 4 Bolt Pattern
  • Since you need tires and wheels, hubs, and spindles the best solution is to go with a complete axle with 4 on 4 hubs to match tire and wheel combo # AM30080. Spindles are difficult to install because they require a special jig and someone with experience to weld them on. With a complete axle, its all ready to go. I have included a link to the axles we have with 4 on 4 hubs for you. Otherwise you could use hub # 8-91-05UC1-EZ with spindle # R104BTREZ and everything will be compatible...
    view full answer...

  • Can a 1-1/16 Inch Trailer Axle Spindle Handle Speeds of 75 Miles Per Hour
  • Spindles typically do not have a speed rating. Traditionally, the component that limits the trailer speed is the tire. My contact at our spindle manufacturer confirmed that the spindle will perform well when the tire speed is complied with. I also recommend servicing your trailer often if you are driving at speeds upward of 75 mph. You will want to ensure the bearings are properly lubricated and red grease, like # L11390, will work well. I've attached a help article on trailer maintenance...
    view full answer...

  • Availability of Trailer Spindle Washers with Tabs
  • If you are talking about a washer like # 5-101, we have them. I cannot speak for any auto parts store but etrailer is here for you. We also have some other tang washers: # 5-59 or # 5-71.
    view full answer...

  • Choosing Replacement Spindles for 4-on-4-Inch Wheels on Light Duty Cart
  • Spindles need to be selected based on the set of bearings used in the hubs that will be installed on them. For example, the hub you referenced, 4-on-4-inch # 8-91-05UC1-EZ from Dexter, uses part # L44649 for its inner and outer bearing. If your current hub uses these bearings you can use EZ Lube Spindle # R104BTREZ. We also offer a bearing/race/seal kit for this spindle, part # BK1-150, that uses this same bearing set. The linked photo shows you the typical appearance and location of...
    view full answer...

  • Spindle for # 8-258-5UC1 Idler Hub
  • The correct spindle for the hub you referenced is # R104BTREZ. The spindle has a 1000 lb capacity, 2000 lb per axle.
    view full answer...

  • Hub, Rim and Spindle Recommendation for 13 inch Wheel with 4 on 4 inch Bolt Pattern
  • For a hub with a 4 on 4 inch bolt pattern that can fit 13 inch wheels with the pilot diameter of 2.5 inches the part # 8-91-05UC1 would be what you would need. For a white rim to fit this the part # AM20222DX would work well. Then for a spindle for the hub to fit on you would want the part # R104BTREZ.
    view full answer...

  • Which Grease Seal for Trailstar Boat Trailer
  • I don't have reference that lists which grease seal the hub on your trailer uses. In order to recommend the correct grease seal, I'll need some information from you. I'll need the inner bearing reference number and the diameter of the spindle where the grease seal rides. When you measure the spindle diameter, you'll need to use a highly accurate measuring tool like a digital caliper. Once I have that information, I'd be happy to recommend a grease seal for you.
    view full answer...

  • What is the Spindle Length Where the Hub Fits on the Timbren Axle-Less Trailer Suspension System
  • The spindle that is used on the Timbren Axle-Less suspension system, # ASR1200S02, is spindle # R104BTREZ. I took some measurements of the spindle. From the inner bearing stop to the threaded portion is 3-5/16 inches. To the end of the threads it is 4-3/16 inches. And to the end of the zerk fitting it is 4-1/2 inches. I made a video that explains where exactly I measured.
    view full answer...

  • Choosing The Correct Hub And Spindle For Your 2,000 Lb Axle
  • Yes, the Trailer Idler Hub Assembly for 2,000-lb E-Z Lube Axles part # AKIHUB-545-2-G-EZ-2K is a direct fit for the EZ Lube Spindle 1.25 RD STUB part # R104BTREZ. For future references, in order to ensure an exact fit, you will need to find the part number on the inside edge of the bearing and make sure it is a compatible fit with your spindle, using our chart. Part # AKIHUB-545-2-G-EZ-2K requires a inner and outer bearing inner diameter of 1.06" which again is included in the hub kit...
    view full answer...

  • Replacement Hub and Bearings for 1989 Tracker Boat Trailer
  • Based on the pictures you attached and the outer bearing measurement you provided, it appears that you have 1-1/16 inch spindle like the Redline EZ Lube Spindle # R104BTREZ. This particular spindle is designed for 2,000 pound axles and will use the same inner and outer bearing. I have attached the spindle's dimensions so you can compare them to what you have in order to verify the replacement bearing sizes. I recommend using a digital caliper like # PTW80157, as the measurements will need...
    view full answer...

  • Why etrailer.com?

    At etrailer.com we guarantee:

  • Highest quality trailer spindles for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer spindle information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Satisfaction Guarantee
    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
John H
Photos by:
Sam P

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.

About Us
photos and videos

Original Photos & Videos

Produced to make sure you know what you are getting and you get exactly what you need.


Installations Completed

To make sure products work and fit the way they are supposed to.

etrailer call center

Phone Calls & Emails Answered

1,125,924 phone calls and 1,350,587 emails to help find the right solution.

etrailer training

Average Hours of Product Training

We get to know our products firsthand so experts can better help you.

etrailer service

Years of Quality Customer Service

Assisting our neighbors and customers, face to face at the counter.

etrailer experts

Pages of Expert Information

Created to make sure you have all the answers to your questions, from real experts.