bing tracking image
  1. Accessories and Parts
  2. Kodiak
  3. Trailer Brakes
  4. Disc Brakes
  5. Brake Assembly
  6. Hub and Rotor Assembly
Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - E-Coat - 7,000 lbs

Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - E-Coat - 7,000 lbs

Item # K2HR79E
Our Price: $643.73
You Save: $24.43
Accessories and Parts
This item qualifies for Free Shipping
Shipping Weight: 119 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

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.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
9/16" Wheel bolts are included with this 2-assembly brake kit. E-coated rotors, calipers and mounting brackets fit 7,000-lb axles and 16" and larger wheels. The 13" rotor features an 8 on 6-1/2 bolt pattern. 1-800-940-8924 to order Kodiak accessories and parts part number K2HR79E or order online at Free expert support on all Kodiak products. Great prices and Fastest Shipping for Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - E-Coat - 7,000 lbs. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (12)
  • Q & A (0)
  • Photos
  • Why etrailer?

Kodiak Accessories and Parts - K2HR79E

  • Trailer Brakes
  • Disc Brakes
  • Brake Assembly
  • Hub and Rotor Assembly
  • Kodiak
  • LH
  • RH
  • 8 on 6-1/2
  • 7000 lbs

9/16" Wheel bolts are included with this 2-assembly brake kit. E-coated rotors, calipers and mounting brackets fit 7,000-lb axles and 16" and larger wheels. The 13" rotor features an 8 on 6-1/2 bolt pattern.


  • Brake assemblies make it easy to upgrade from drum to disc brakes for better performance
    • More consistent stopping, even at highway speeds
    • Dramatically shorter stopping distance
  • Maintenance costs are lower than for drum brakes
    • Fewer moving parts to maintain, repair and replace
  • E-coat finish provides corrosion resistance for freshwater and limited saltwater use
  • Integral hub-and-rotor assembly is 1 piece
    • Minimizes lateral runout to prevent warping
    • Provides smooth ride with balanced hub and rotor
    • Uses industry-standard bearings and seals (sold separately) - races included
    • Prevents heat-related damage with vented design that effectively dissipates heat
    • Includes wheel studs - lug nuts sold separately
  • Cast iron calipers are self-adjusting for smooth, equal braking
    • Cast iron construction does not flex like aluminum
    • Low-drag design retracts piston farther than other calipers for a cooler-running brake
    • Silver cadmium piston is 2-1/2" in diameter - 30 percent larger than other brands
      • More braking torque than the competition
    • High-performance, ceramic brake pads
  • Ductile iron mounting brackets provide strength and durability
    • Side-support design ensures that load is placed on bracket, not bolts
    • Extra embossing for additional thread contact ensures tight, secure mounting for caliper guide bolts
    • 5-Bolt brake flange mounting configuration - weld-on flange sold separately
  • Kit includes 2 full brake assemblies
    • 2 E-coated, cast iron rotor-and-hub assemblies
    • 2 E-coated, cast iron calipers
    • 2 E-coated, ductile iron caliper-mounting brackets
    • 4 Stainless steel caliper-mounting bolts
  • Hydraulic brake actuator and lines (sold separately) are required for brakes to be activated
    • Requires psi rating of at least 1,500


  • Fits:
    • Axle capacity: 7,000 lbs
      • #42 Spindle
    • Wheel size: 16" and larger
  • Bolt pattern: 8 on 6-1/2"
  • Rotor diameter: 13"
  • Brake flange configuration: 5 bolt
  • Wheel stud diameter: 9/16"
  • 3-Year warranty

Bearing, Race and Seal Information

  • Bearings (sold separately)
    • Inner bearing: 25580
    • Outer bearing: 02475
  • Races (included)
    • Inner race: 25520
    • Outer race: 02420
  • Grease seal: RG06-070 (sold separately) or 10-63 oil seal (sold separately)
    • Inner diameter: 2.250"
    • Outer diameter: 3.376"

Disc Brakes

More and more people are switching their trailers over to disc brakes, and with good reason. Disc brakes deliver consistent braking - even at highway speeds - unlike drum brakes, which often show a substantial drop in braking torque at higher speeds. In addition, disc brakes offer a substantially shorter stopping distance than drum brakes.

Disc brake calipers have only one moving part, rather than the many found in drum brakes. This means that there are fewer parts to maintain, fewer parts to get damaged and fewer parts to have to repair or replace, thus reducing maintenance costs.

Integral Hub-and-Rotor Assemblies

The integral hub-and-rotor is made from cast iron, matching SAE specifications. Cast iron is ideal for high-temperature operations and offers a favorable friction coefficient to ensure adequate stopping power. Kodiak's rotors are vented to effectively dissipate heat, dramatically reducing the incidence of heat-related damage. Furthermore, machined disc brakes minimize the chance of contamination between the hub and rotor, resulting in excellent performance and long life.


Kodiak calipers are constructed of cast iron to prevent flexing. Less flex means more braking torque, resulting in smooth, even braking every time. The corrosion-resistant stainless steel piston is 30 percent larger than standard pistons, ensuring shorter stopping distance and increased torque. In addition, the unique low-drag design of Kodiak's calipers allows the piston to retract farther than in most standard models, giving you a cooler-running brake.

Mounting Brackets

Designed for axles with 5-bolt brake flange configurations, the included mounting brackets are made of heavy-duty ductile iron that is embossed to provide additional threading for guide bolts. The added thread strength ensures a tighter, more secure connection between the caliper and bracket. Another unique feature of Kodiak's brackets is the side-support angle, which guarantees that the load is carried by the bracket, rather than the bolts.

2/H-133-7-9-EEE-K Kodiak Disc Brakes - 2 Wheel Set - Integral Hub and Rotor - E-Coat Finish - 9/16" Wheel Bolts - 7,000 lbs

Replaces 2/HRCM-133-7-9-E-K

Installation Details K2HR79E Installation instructions

Customer Satisfaction Score:

Customer Reviews

Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - E-Coat - 7,000 lbs - K2HR79E

Average Customer Rating:  4.9 out of 5 stars   (12 Customer Reviews)

9/16" Wheel bolts are included with this 2-assembly brake kit. E-coated rotors, calipers and mounting brackets fit 7,000-lb axles and 16" and larger wheels. The 13" rotor features an 8 on 6-1/2 bolt pattern.


I have a 2015 GMC Sierra 2500HD Diesel, towing a 2017 Pinnacle 36FBTS 5th. wheel. The Pinnacle has a standard drum braking system. On a long trip this year I cracked both rotors on my truck from over heating related to the Pinnacle's drum brakes failing to fully provide proper stopping.
I decided no more, and after much review I replaced the factory drum brakes with the Kodiak Discbrake system. (my first time ever doing something like this) In addition, one of the key items for me was a way not to replace my on-board factory trailer brake controller, (did not want to use an aftermarket product, that would diminish the interior look ) thus I also added the control Adapter Module that enabled me to use the factory installed brake controller. With all this change I decided to also go ahead and add a separate brake away battery. Everything I just described are shown in the attached photos.

I found eTrailer extremely helpful in answering questions, although I did not have a lot of questions since their online videos proved most helpful.

All parts of the Kodiak system worked fantastic following a 2500 mile trip. The improved braking is superior, and I did not need to replace my on board controller, but continued to use it by installing the control adapter. The disc brake picture is one of the disc brakes that I examined following our trip...all in perfect shape with everything working great for the entire trip.

Still just as good as ever absolutely no problems.
Morris G - 07/26/2021


Very happy with the quality of these. Stopping power is MUCH better than with the old electric brakes.


One year ago I decided to switch to Kodiac Disc Brakes. It was a great decision. I installed them on my 16 k Escalade fifthwheel. I installed all new wheel bearings and oil bath hubs. Although The oil caps leaked slightly and Kodiac sent new ones I still had the issue. I resolved it by using the Dexter oil caps. I believe the o rings were the issue. I have been a customer of Etrailer for about seven years and they have always been very helpful and provided five star service.
My fifthwheel stops a lot quicker than the brake shoes did. If you are thinking about it don't wait any longer order yours now and you will not be disappointed. Good job everyone at Etrailer.


It all went together as expected and seems to be fine. One of the fittings for the brake line was a bit mucked up, but I think we'll be able to use it (thus a 4 not 5). They arrived as expected and worked fine.


The staff at e trailer is extremely knowledgeable, professional and a pleasure to do business with.
Thank you Ashley for your help

Jeff - 08/21/2021


I have had these brakes on my trailer for the past year. They stop 100% better than the old drum brakes. Worth pointing out that I had purchased axles and Kodiak disc brakes from another vendor originally. I ended up having to return them due to manufacturing defects and shipping other incorrect parts. I purchased the remaining parts here from etrailer for slightly more than originally paid at the other vendor. These rotors are noticeably heavier duty, the flanges are slightly thicker and these came with the 9/16” hardware. I could have saved a ton of time just coming straight to etrailer.


This braking system is the best now you can drive with confidence knowing that when you apply your brakes your going to stop there should be some more stars they only have 5 am adding 5 more


The brake system has certainly exceeded expectations and is clearly one of the best RV upgrades I've made. Stopping distance is greatly improved. Installation is a breeze for even semi-mechanically inclined. The only small bit of an issue was one of the four caliper brackets I received was different than the others, but as it turned out either of the styles worked. I'd definitely add the wet hub option which adds bearings and a different inboard grease seal to the shopping list. It's worth the extra few dollars.


Kodiak brakes are very well made and the fit is perfect. Etrailer is so easy to work with. I ordered the wrong brake the first time, but Cathy H. arranged the return and got the right part on the way. I wish every business provided such a pleasant experience.



These are good brakes. I have installed these on other trailers and am happy with them. etrailer customer service is excellent. They are willing to help.



See what our Experts say about this Kodiak Accessories and Parts

  • Who Can Convert a 2013 Dutchman Rubicon Trailer from Electric Drum Brakes to Hydraulic Disc Brakes
    Trailer brakes and vehicle brakes are very similar so a trusted mechanic could do the job. Other places to inquire include shops that work on trailers and RV dealers with a service center. We have a handy how-to article that covers everything needed to switch from electric brakes to hydraulic disc brakes. I have included a link to it for you.
    view full answer...
  • What Size Fitting is Needed on a Flexible Brake Line for Kodiak Disc Trailer Brakes
    You will be looking for a flexible hose with 3/16 inch fittings for Kodiak disc brake kits . We have numerous depending on the length you need. I have included a link to all of the options for you.
    view full answer...
  • How to Determine if the Kodiak Disc Brake Kit # K2HR79E Would fit an RV Trailer
    There is a strong chance the Kodiak Disc Brake Kit # K2HR79E that you referenced would fit your 7k ALKO axles but you will need to verify this by getting the numbers off the bearings you currently have in your hubs. If they are 25580 inner and 02475 outer this kit would work well for you.
    view full answer...
  • Can Grease Be Used in an Oil-Bath Style Hub
    There's no reason grease couldn't be used in an oil-bath hub. Oil requires a tighter seal than the grease does so the grease will work fine in an oil bath hub. If you were interested in using the part # K2HR79E you could use it with grease.
    view full answer...
  • Will Kodiak Brake Kit K2HR79E Fit a 2013 Heartland Sundance with 7k Lippert Axles
    The hub you have has the same bearings that a 7k axle will have. That means that the Kodiak Disc Brake Kit # K2HR79E will fit it even though the bearing numbers are slightly different. The inner diameters of the bearings are the same though so that's what really matters when fitting it to a spindle. Your EZ lube spindles can also be easily converted to oil bath. The zerk fitting would be behind the screw on grease cap so it's not like it would leak oil.
    view full answer...
  • Do Caliper Pins Need to be Lubricated When Installing Disc Brakes on a Trailer
    The caliper pins do not need lubrication on a trailer. I've attached a video and an article on installing disc brakes for you to take a look at. Although it wouldn't hurt anything if they are lubricated either.
    view full answer...
  • Does Kodiak Disc Brake Kit K2HR79E Come with Brake Pads
    Yes, the Kodiak Disc brake kit part # K2HR79E does come with ceramic brake pads. I attached an install video for this kit for you to check out as well.
    view full answer...
  • Converting Electric Brakes To Disc Brakes On Trailer
    Installing disc brakes on your trailer will not cause a problem with clearance. The Kodiak Disc Brake Kit, part # K2HR79E has a 13-inch rotor and an 8 on 6-1/2 bolt pattern. This kit is designed for a 5-bolt brake flange. There are other items you will need to convert your electric brakes to either electric over hydraulic disc or hydraulic disc brakes. I have attached links to a couple helpful articles that explain what is needed to do the conversion. If you have any questions about...
    view full answer...
  • What Size Bolts Are Needed To Install Caliper Mount Bracket For Kodiak Disc Brake Kit K2HR79E?
    I had our warehouse measure the diameter of the mounting bolt holes in the caliper mounting bracket included with the Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - E-Coat - 7,000 lbs # K2HR79E you were looking at, and you will need 3/8" x 1-1/2" bolts instead of 1/2" x 1-1/2" bolts. I also had them measure the center hole of the bracket and it measures 3.244" as you can see in the included diagram. I included a video of the # K2HR79E for you to take a look at.
    view full answer...
    Image 1 for
  • Can Trailer With 7k Axles Run Different Size Rotors on Front and Rear Axle
    You need to run the exact same size brakes on both axles of your trailer. Otherwise one axle's brakes will grab harder than the other one's and you'd not be able to maximize your braking power. Since you have 7k axles I'd recommend running both axles with 13 inch rotors like the part # K2HR79E that you referenced.
    view full answer...
  • Will 7k Kodiak Disc Brake Kit with 9/16 inch Studs Fit Same Spindle as Kit with 1/2 inch Studs
    As far as your spindle is concerned all that matters is that the inner diameter of the bearing is the same, which it is between the bearing numbers # 14125A and # 02475 so the 9/16 inch stud kits you mentioned for the Lippert 7k axles would work well. The Kodiak kit part # K2HR79E would fit your spindle and work well. It has the stud size you want also. I also attached a link to a page that has a guide for converting trailer brakes from drum to disc for you to check out as well.
    view full answer...
  • Difference Between Oil Bath Hub and Grease Hubs
    Yes, oil hubs and grease hubs use the same cavity to oil and grease, through the center cap. The main difference is a standard grease hub for an EZ lube spindle is grease is pressed into place and maintained through the center cap and an oil bath hub cap, has a rubber seal, holds oil and screws into the hub. The Kodiak Disc Brake kit part # K2HR79E is an oil bath hub so the center cap of the hub fills with oil. The oil in the center cap oils the spindle while you going down the road....
    view full answer...
  • Recommended Kodiak Disc Brake Kit for Dexter Trailer Axle # 8327830
    Yes, the Kodiak Disc Brake Kit # K2HR79E referenced in your question will fit and work on the Dexter Trailer Axle Beam # 8327830 that you're needing for your trailer. The spindles on this axle are compatible with the bearings and seal that are used with the Kodiak hubs. As you also mentioned, these 13 inch rotors feature a 8 on 6-1/2 bolt pattern. They will work with 16 inch or larger wheels. I have attached an installation video for this kit that you can take a look at as well.
    view full answer...
  • What Synthetic Oil Should I Use for Oil Bath Hubs?
    When it comes to keeping your Kodiak Disc Brakes # K2HR79E lubricated you'll want to use the Kodiak Synthetic Bearing Oil for Oil Bath Hubs # XLPROLUBE. This is a synthetic oil specifically designed for oil bath bearings and will work very well on your new oil bath setup.
    view full answer...
  • Will Disc Trailer Brakes that Mount to a 4-Bolt Flange with a 5-Bolt Mounting Flange
    The brake assembly in the picture you submitted has a 5-bolt pattern. The mounting brackets included with Kodiak disc brake kit # K2HR858DE mount on a 4-bolt pattern so this particular kit would not work for your trailer. All of the disc brake sets for 8k axles with the 8 on 6-1/2 bolt pattern mount on a 4 bolt pattern. If you happen to have 7K axles with an 8 on 6-1/2 wheel bolt pattern then you could use kit # K2HR79E which does have the 5-bolt mounting pattern for the brakes. If you...
    view full answer...
  • Picking Out Trailer Hub/Rotors for Dexter 7,000 lb Axle
    I really wish I had a way to look that up but since either hub would fit the same spindle that info isn't available for me to look up. You'll have to measure the stud diameters and go with the part # K2HR79E if they are 9/16 inch or part # K2HR712D if they are 1/2 inch.
    view full answer...
  • Which Kodiak Brake Kit Fits 8,000 lb Dexter Axle
    For your Dexter 7,000 lb torsion axle the disc brake kit you'd want is the Kodiak part # K2HR712D which is the right capacity, fits your spindle, and is Dacromet coated which means it will do a great job fighting corrosion. I would recommend going with a higher capacity than needed as it may not fit and it will be hard to get the correct braking strength.
    view full answer...
  • Oil Bath Seals for Kodiak Disc Brake Kit for 7K Axles and 8 on 6-1/2 Bolt Pattern
    Yes, using oil bath hub seals # 10-63 will work with the Kodiak disc brake kit you ordered, # K2HR79E. The kit already has the oil caps so you wouldn't need those. The brake kit does not include the bearings. You would need 2 of # 25580 and 2 of # 02475.
    view full answer...
  • Correct Kodiak Disc Brake Hub/Rotor with E-Coat for Dexter 8-133/133-8 with 9/16" Studs
    Yes, the Kodiak 13" Hub and Rotor part # KHR1389E will work in place of a Dexter 8-133/1333-8 Hub. We also offer the kit as well, the Kodiak Disc Brake Kit part # K2HR79E.
    view full answer...
  • Replacement Bearings and Brake Assemblies for 2004 Pace Shadow Enclosed Trailer
    Replacement bearings can best be selected by using the part numbers on the current parts; the linked image show you the typical location and appearance of the part numbers on bearings, races and seals. You can search our site using the part numbers. If you cannot find part numbers you'll need to use a precision digital caliper like # PTW80157 to measure your spindles at the points noted in the diagram: B for the grease seal inner diameter; C for the inner bearing and D for the outer bearing....
    view full answer...
    Image 1 for
  • Does the Mounting Flange of the Kodiak Disc Brake Kit K2HR79E Fit 5 Bold Mounting Flange
    The Kodiak disc brake kit part # K2HR79E that you referenced is actually designed to fit brake mounting flanges on axles that have the 5 bolt mounting pattern. There are several holes in the bracket that you can see in the product pictures but that is to allow the bracket to be installed in several different orientations on the trailer. This comes with 9/16 inch wheel studs that will work well with your current rims but you will need new lug nuts. For that you would need part # 6-53.
    view full answer...
  • 7,000 lb Disc Brake Kit With 9/16 Inch Wheel Studs
    There are disc brake kits for your 7,000 lb axle that you can get which include 9/16" wheel studs. You have your choice of kits with a raw finish (for limited corrosion resistance), and e-coat finish (for freshwater corrosion resistance), dacromet finish (for freshwater and saltwater corrosion resistance), or dacromet and stainless steel finish (for the best overall fresh and saltwater corrosion resistance): - Raw Finish: Kodiak Disc Brake Kit # K2HR79 - E-Coat: Kodiak Disc Brake Kit...
    view full answer...
  • Is the Kodiak K2HR79E Rotor Able to be Separated from the Hub?
    The Kodiak Disc Brake Kit # K2HR79E is not able to be separated, but I do have another option available. The Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - Grease - 8 on 6-1/2 - E-Coat - 8,000 lbs # K71-635-90 will use the same bearings and will be able to be separated, making replacements easier if needed. The E-coat finish provides corrosion resistance for freshwater and limited saltwater use as well. With this also being made in the U.S.A., it will be a great option.
    view full answer...
  • Parts Needed to Convert Triple Axle Trailer from Electric Drum Brakes to Disc Brakes
    We can help you with the planned conversion of your triple axle trailer from electric drum brakes to disc brake operation. A great place to start are the articles I linked for you, which cover all of the considerations and components needed to make the switch to either hydraulic disc brakes or electric-over-hydraulic disc brakes. In the EOH set-up you will still need a trailer brake controller like the P3 # 90195 to activate the EOH actuator. For a purely hydraulic set-up you will need...
    view full answer...

< Previous

Do you have a question about this Accessories and Part?

  • Why

    At we guarantee:
  • 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 accessories and part 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

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

Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Jeff D
Installed by:
Jeff D
Employee Brent H
Installed by:
Brent H
Employee Jacob T
Video Edited:
Jacob T
Employee Kathleen M
Video Edited:
Kathleen M
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video by:
Chris R
Employee Jonathan Y
Video by:
Jonathan Y
Employee Michael B
Video by:
Michael B
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Mike S
Updated by:
Mike S
Employee Shane H
Test Fit:
Shane H

At 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. Let us know if anything is missing or if you have any questions.