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Brake Mounting Flange for 1-3/4" Round Trailer Axles - 2K

Brake Mounting Flange for 1-3/4" Round Trailer Axles - 2K

Item # 4-34
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4-34 - Hardware Redline Accessories and Parts
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Call 800-298-8924 to order Redline accessories and parts part number 4-34 or order online at etrailer.com. Free expert support on all Redline products. Guaranteed Lowest Price and Fastest Shipping for Brake Mounting Flange for 1-3/4" Round Trailer Axles - 2K. Accessories and Parts reviews from real customers.
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  • Reviews (14)
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Redline Accessories and Parts - 4-34

  • Trailer Brakes
  • Disc Brakes
  • Electric Drum Brakes
  • Hydraulic Drum Brakes
  • Redline
  • Hardware
  • Mounting Flange
  • 7 Inch
  • 1-3/4 Inch Diameter Axle

Brake Mounting Flange

  • Works with 7" brake assemblies (2,000 lbs. axles)
  • Center Hole I.D.: 1.64"
  • Hole Spacing: 2-7/8" center to center
  • 4-Bolt
  • Use with 1-3/4" round axles, that use 1.25 and 1.38 round 2,000 pound spindles
  • Brake mount flange gets welded to the end of the axle to provide a secure mounting place for brake assemblies

Video of Brake Mounting Flange for 1-3/4" Round Trailer Axles - 2K

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

Video Transcript for Redline Trailer Brakes 4-34 Review

Today we're going to be taking a look at a brake mounting flange for a 1 3/4 inch round trailer axle. This brake mounting flange gets welded to the end of the axle to provide a secure mounting place for a brake assembly. It does work with seven inch brake assemblies. Again it's designed for 1 3/4 inch round axles, or 2,000 pound axle, or typical 2,000 pound axle. The center hole is going to give us a diameter of 1.64 inches. The hole spacing, the distance that we have center on center between each of those holes is going to be the same at 2 7/8 of an inch, center on center.

Overall measurement is a square design. It's going to measure 3 3/4 of an inch by 3 3/4. As you can see, it's a four molt hole design. That's going to do it for today's look at the brake mounting flange for a 1 3/4 inch round trailer axles.

Customer Reviews

Brake Mounting Flange for 1-3/4" Round Trailer Axles - 2K - 4-34

Average Customer Rating:  4.8 out of 5 stars   (14 Customer Reviews)

- 4-34

Flanges are listed as 1.75 inches but measure 1.6 inches. A few minute with Dremel fixed it. 569676

- 4-34

works as it should 772232

- 4-34

Exactly what I needed to add electric brakes on my Tow Dolly. 744718

- 4-34

Good product 739594

- 4-34

Was plesaed with the quality and price. 736947

- 4-34

I had to replace the old hydraulic disc brakes on my Tryton 20' snowmobile trailer and need to add new mounting plates for the new electric drum brakes. These worked great. Cut the old mounts off the spindle and welded these on. A whole lot easier than making from scratch!!! 703692

Works great
DENNIS W - 09/16/2020


- 4-34

Works fine 493005

- 4-34

Good fit no problem mounting to axle! Works very well! 451907

- 4-34

Electric Brake kit for trailer this time. The parts are very acceptable and the service is supreme. Couldn't get any better service anywhere. I've bought a lot of items from etrailer for a couple years now. I have had great experiences with each and every order. 384496

- 4-34

I received my parts and are in great condition. Customer service and support were excellent. 366513

- 4-34

Look just like it is pictured 218583

- 4-34

4-34 four bolt mounting plate is an excellent replacement for my 1997 Coleman Fleetwood Bayports popup campers that I am close to finishing a restoration process on. They fit perfectly! Very happy to purchase an excellent product from the fastest shipper I have ever come across. I am blown away by the professionalism with this company! Thanks 142954

- 4-34

Excellent Product 122645

- 4-34

Very helpful and part fit great and order was shipped when said. Will order more parts from you again. Thank You 81973


Ask the Experts about this Redline Accessories and Parts

  • Trailer Axle That is 60" Hub Face to Hub Face With Hub and Drum and Brakes
    There are trailer axle that have a 60" hub face to hub face measurement, as well as a hub and drum that will work, but none with a 6 on 5-1/2" bolt pattern. That bolt pattern is only for larger capacity axles/hubs so the largest available for this axle, which has a 2,000 lb rating, is a 5 on 4-1/2" bolt pattern. What you need would be the following: - Dexter Trailer Axle Beam with Standard Spindles - 60" Long - 2,000 lbs # T20BTR-6048 - Brake Mounting Flange for 1-3/4" Round Trailer...
    view full answer...
  • Why is Brake Mounting Flange for 1-3/4" Round Trailer Axles # 4-34 Center Hole Larger than 1-3/4"
    That is the correct hole size for brake mounting flange # 4-34. That would leave space for an approximate 1/8 inch weld all around the spindle. Because welding on brake flanges is a precision job it is recommended to have a professional welder with experience welding on flanges to perform the installation. A special jig needs to be used to ensure the flanges are perfectly straight/concentric or it could lead to tire wear and other issues that will negatively impact the performance of the...
    view full answer...
  • A Professional Should Install Trailer Brake Mounting Flange # 4-34
    You are correct about needing to have a brake mounting flange like # 4-34 welded on correctly. Because it needs to be just right it should be installed by a qualified professional in a shop that works on trailers. We do not have specific instructions for installation, but a pro will know how to do it.
    view full answer...
  • 2,200 lb Axle Measuring 72 Inches Between Hub Face, Brake Flange, Hub, and Electric Brakes
    We do have all the parts you need, though the axles with that size don't come with the brake flange mounted, so you will need to have them welded on. Also, there isn't a hub with a 5 on 4-1/2" bolt pattern that will fit this spindle though, only a 4 on 4" bolt pattern. So for the 2,200 lb axle that measures 72" hub face to hub face & spring seat to spring seat, brake mounting flange, hubs, and electric brakes, these are the exact parts you need. - Dexter Trailer Idler Axle Beam with...
    view full answer...
  • Adding Electric Brakes to Northern Tool UltraTow 5x8 Aluminum Frame Trailer
    Because the trailer doesn't have a traditional size, in order to upgrade to trailer brakes you will need to have a welder install the Brake Mounting Flange for 1-3/4" Round Trailer Axles - 2K # 4-34 which will require the proper jig to ensure placement and alignment. Then you will need to measure your spindles to help get the correct replacement hubs to add the integrated drum. I've attached a photo of the locations to measure with a digital caliper like # PTW80157 to assist in getting...
    view full answer...
  • Replacement Brake Assembly Parts for 2800 lbs Philips/Dexter Axle with 1-1/4 Inch Deep Hubs
    You will want the Replacement Brake Spring Set for Dexter 10" x 1-1/2" Electric Trailer Brake Assembly # K71-362-00. Then you will want the Replacement Trailer Brake Magnet Kit for 7" Brake Assemblies # BP01-068 due to the thinner hubs instead of the traditional 10 x 2-1/4 inch hubs. That guide for the anchor post is not available as a replacement part from any of our manufacturers. Your only other option is to replace the assemblies with the Dexter Electric Trailer Brake Kit - 10"...
    view full answer...
  • Wiring for Curt Echo Mobile Wireless Brake Controller and Adding Electric Brakes to a Trailer
    The Curt Echo Brake Controller part # C51180 is a great choice because of its convenient and simple installation. The 7-way connector that you mention part # A10-7084VP pugs into the 4-way connector you purchased part # C56217. The white wire from the 7-way plug needs to be grounded to a clean bare metal surface on the vehicle's frame. You are correct, the black wire from the 7-way connector needs to be extended from the plug into the engine cavity and to a 40 amp circuit part # 9510...
    view full answer...
  • Replacement 7 inch Brake Assembly for Fiat Elnagh 320 Motorhome
    Buongiorno! We do carry Replacement Magnet Kit for 7" Electric Trailer Brake Assemblies - 2,000 lbs Item # AKBRKR-M7. However, it looks like the center mounting hole on yours is round, whereas ours uses a square/rectangular hole. It doesn't appear that the hole on the # AKBRKR-M7 is large enough to allow the arm (on the brake assembly) to fit through. If you scroll to about the 5:40 min mark on the Redline Replacement Magnet Kit video Iinked below, you'll see the arm I'm referring...
    view full answer...
  • How to Find the Correct Brake Mounting Flange
    Capacity is what will have the capacity as opposed to the spindle, and the correct brake mounting flange will depend on the diameter of your axle. Since you mentioned a 3,500 lbs I assume that is your axle's capacity and typically those have 2-3/8" diameters. For that there is the Brake Mounting Flange for 2-3/8" Round Axle # 4-35. We don't have any flanges for 2" axles, but the other possibility is the Brake Mounting Flange for 1-3/4" Round Trailer Axles # 4-34 which is the typical...
    view full answer...
  • What Parts Are Needed to Add Electric Brakes to a Trailer with a 2,000 Lb Axle
    In order to install electric brakes on your trailer you will need a brake mounting flange, brake assembly, hub/drum, trailer wiring, breakaway kit, and brake controller. I have attached my recommendations on each of the following for you below: Brake Mounting Flange: part # 4-34 (2) Brake Assembly: part # AKEBRK-2 Hub/Drum: part # AKHD-545-2-EZ-2K (2) Trailer Wiring: part # e99011 Breakaway System part # 20099 Brake Controller: part # 90885 In order to be sure the...
    view full answer...
  • Electric Trailer Brakes for Boat Trailer With 2,000 lb Axles
    Thanks for the photo and it looks like you do have 2,000 lb axles so you can use Dexter Electric Trailer Brake Kit - 7" - Left and Right Hand Assemblies - 2,000 lbs # 23-47-48 so long as you have a 4-bolt brake mounting flange such as the Brake Mounting Flange for 1-3/4" Round Trailer Axles - 2K # 4-34 as well as a 7" hub and drum like the Dexter Trailer Hub and Drum Assembly for 2,000-lb Axles - 7" - 5 on 4-1/2 # 8-257-5UC3. If you need a new hub and drum assembly you do need to know...
    view full answer...
  • Why Dont 2,000 Lb Trailer Axles Comes with a Brake Mounting Flange
    A 2,000 lb trailer axle like the Dexter Trailer Axle Beam part # T20BTR-7258 is not going to come equipped from the manufacturer with a brake mounting flange because of the weight of the trailer it is designed to be used on. However, most qualified welders can add the brake mounting flange part # 4-34 for a very small fee. The Dexter Trailer Axle has a 2,000 lb weight capacity, 58" spring center, and 72" hub face length. It uses a L44649 bearing on both the inner and outer seats. Once...
    view full answer...
  • Compatible 2,200 lb E-Z Lube Axle, Hub and Drum and Electric Brakes
    The 2,200 lb capacity Dexter Trailer Idler Axle Beam with EZ-Lube Spindles # T20BTR-EZ-6048 is not compatible with the hub and brakes you referenced, so it will require a couple of different parts, though you can use Brake Mounting Flange # 4-34. The axle has BTR spindles so you would need Dexter Trailer Hub and Drum Assembly for 2,200-lb E-Z Lube Axles # 8-173-16UC3-EZ which are compatible with 7" x 1-1/4" brake assemblies. For that you will need the Dexter Electric Trailer Brake Kit...
    view full answer...
  • What Parts Are Needed To Add Brakes To A 1997 Coleman Destiny Pop-Up Camper
    To add electric brakes to the Coleman Destiny Bayport pop-up camper, you will need a few pieces of information. You will will need to know the weight capacity of the axle, bolt pattern of the wheels, and whether or not it has brake flanges already and their bolt pattern. If no brake flanges then you will have to either replace the axle with one that does or you can purchase brake flanges like Item # 4-34 and have a qualified welder weld them to the axle. After sorting out what...
    view full answer...
  • Availability of 4 Bolt Mounting Flange for Electric Brake Assemblies
    It sounds like you are looking for a brake mounting flange for your trailer axle. For 4 bolt mounting flanges, we have the following plates available: For 3-1/2 inch axles: # 4-50 For 3 inch axles: # DM52415 For 2-3/8 inch axles: # 4-35 For 2-3/4 inch axles: # DM60124 For 1-3/4 inch axles: # 4-34 Brake mount flanges will need to be welded to the end of your axle and will provide a secure mounting place for the brake assemblies. I recommend having a qualified welder perform the...
    view full answer...
  • How to Determine Correct Replacement Axles for Older Trailer
    When it comes to replacement parts for trailers - no matter if they're cool vintage ones like your 1968 Silver Streak Sabre or new, off-the-lot trailers - there isn't any type of database or other method that is available to know what is needed, which means some information and measurements are needed to make sure you get the right parts. I wasn't able to find an exact GVWR of this trailer, but it looks like it is in the 3,500 lb range; you'll need to verify this but if it is true, that...
    view full answer...
  • Changing From Hydraulic to Electric Trailer Brakes on Trailer With 2,000 lb Axle
    I took a look at the specs of your 1998 Jayco Eagle 12UDST, and it looks like this is a single axle trailer with a 2,000 lb axle. That means you likely have a 7" hub and drum like the Dexter Hub and Drum Assembly # 8-257-5UC3-EZ, though you will want to confirm that by measuring the inside diameter of the hub. If you do have a 7" hub and drum, as well as a 4-bolt mounting flange like # 4-34, the correct electric brakes are the Electric Trailer Brake Kit - 7" - Left and Right Hand Assemblies...
    view full answer...
  • Parts Needed to Add Electric Drum Brakes to a 5 x 8 Utility Trailer
    We do have all the items you need to add electric drum brakes to your existing 2200-lb axle and the linked article outlines it all. But for making this process as easy and foolproof as possible you might consider simply replacing the entire axle with one that already has brake flanges, hub/drums and brakes. For example, Dexter kit # 35545E-ST-EZ-89 is an 89-inch 3500-lb axle with 5-on-4-1/2 hubs and 10-inch electric brakes that comes complete with bearings, races and seals. If you arrange...
    view full answer...
  • Parts Needed to add Electric Trailer Brakes to 1990 Skamper 190c
    You are able to install an electric braking system on your trailer. The parts needed are going to be determined by the axle that your camper is equipped with. From what I can tell from your picture, it looks like this is a 4 lug axle which is going to likely mean you have a 2,000-lb axle with a 1-3/4" diameter. In order to verify that is correct you will need to confirm that the Inner and Outer bearings on your trailer wheel hubs match L44649. You can verify this once you've taken it apart...
    view full answer...
  • Hubs, Drums, Brakes and Spindle for a 2,000 lb Trailer Axle
    Yes, the Electric Trailer Brake Kit, # AKEBRK-2, the Trailer Hub and Drum Assembly, # AKHD-545-2-EZ-2K, and the EZ Lube Spindle, # TRU44FR, will work together. The brake mounting flange that you will want for this setup is part # 4-34 which should be welded to the end of the axle tube just behind the spindle. The flange must be welded perfectly square to the axle tube to ensure that the correct angle is kept with the camber of the axle tube, so be sure to have an experienced and qualified...
    view full answer...
  • Can Electric Brakes Be Added to Dexter 2,200lb Capacity Idler Axle
    Brake mounting flanges like part # 4-34 could be welded to the axle you referenced. The spindles are compatible with the L44649 wheel bearings. If you needed a hub with a 4 on 4 bolt pattern, use the # 8-173-16UC3-EZ hub drum and the # 23-47 and # 23-48 brake assemblies. You'd also need 4 nuts # 6-17 and # 5-8 lock washers per brake assembly. If you needed a 5 on 4-1/2 bolt pattern, go with the # 8-257-5UC3-EZ hub drum along with the brake assemblies and hardware mentioned above.
    view full answer...
  • Complete Electric Brake Installation for 2,000 lb Trailer Axle
    With the axle measurement and the bearing number, I can confirm that you have 2,000 lb capacity axles on your trailers. You will want to get the Brake Mounting Flange, # 4-34, to weld onto each side of each axle. With that flange in place, you will want to mount the 7 inch Electric Trailer Brake Assembly # AKEBRK-2L on the left side of the axle and the # AKEBRK-2R on the right side of the axle. These are nearly identical parts, but installing on the correct side is very important....
    view full answer...
  • How to Find Wheel Bolt Pattern to Find the Correct Replacement Trailer Brakes
    There are a couple of methods you can use to determine bolt pattern of the wheels themselves. First, you can use the number of lugs and the bolt circle. For an even number of lugs, measure the center to center distance of 2 lugs directly across from each other. If you had 6 lugs and the distance measured is 5 inches, you have a 6 on 5 bolt pattern. For an odd number of lugs, it is a little more difficult. Measure from the center of 1 lug directly across to the center point between 2...
    view full answer...
  • Can a 2,000 Pound Trailer Axle be Fitted with Electric Brakes and 10 or 12 Inch Wheels
    You would need to step up to a 3500 pound set up to get an axle that comes with brake mounting flanges. You could have brake mounting flanges welded to a 2K axle if you wanted but it is a precision job that requires the proper equipment and someone who has performed this job before. So for example you could use axle # T20BTR-6048 with hub and drum assembly # 8-257-5UC3. then you would need brake mounting flange # 4-34 and brake assemblies # 23-47 and # 23-48. The hub and drum assembly...
    view full answer...
  • Replacement Axle with Hydraulic Drum Brakes on a 2,200 Lb Boat Trailer
    I have the perfect replacment trailer axle for your boat trailer. For this, I recommend using the Dexter Trailer Axle part # T20BTR-7258. The Dexter trailer axle measures 72" from the face of each hub and 58" from the center of each spring seat. The measurements you gave are likely the same as what is listed above because the start of each measurement could vary slightly from person to person. The outside diameter of this trailer axle is 1.75" which should be what is on your trailer...
    view full answer...
  • Adding Trailer Brakes to a Timbren Axle-Less Trailer Suspension System
    Yes, it is possible to add brakes Timren Axel-Less Trailer Suspension System. The Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle w/Flange - Off-Road Tires - 2.2K, # ASR1THDS03, that you were looking at has the brake flange mounted, so it is ready to add brake assembly and hubs to. I'd recommend getting the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35-SA . You would then pair these with the Trailer Hub...
    view full answer...
  • Adding Electric Brakes to 1999 Coleman Santa Fe Pop-Up Camper 3389
    Thank you for providing the bearing numbers and other part numbers from the repair parts manual for your 1999 Coleman Grand Touring Series Santa Fe 3389 Pop-Up camper. Based on the bearings and bolt pattern for your existing idler hubs, we can determine the correct parts to add electric brakes to your trailer. The components needed to add electric brakes to a trailer are an electric brake compatible hub and drum, brake assemblies, a brake mounting flange, trailer wiring, a breakaway...
    view full answer...

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Info for this part was:

Expert Research:
Michael H
Installed by:
Cole B

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