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  1. Trailer Brakes
  2. Kodiak
  3. Disc Brakes
  4. 7000 lbs Axle
  5. Hub and Rotor
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 7,000 lbs

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

Item # K2HR79
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Our Price: $574.90
Trailer Brakes
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Shipping Weight: 119 lbs
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9/16" Wheel bolts are included with this 2-assembly brake kit. Machine-finished rotors, e-coated calipers and e-coated mounting brackets fit 7,000-lb axles and 16" and larger wheels. The 13" rotor features an 8 on 6-1/2 bolt pattern. Lowest Prices for the best trailer brakes from Kodiak. Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 7,000 lbs part number K2HR79 can be ordered online at or call 800-298-1624 for expert service.
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  • Reviews (8)
  • Q & A (0)
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Kodiak Trailer Brakes - K2HR79

  • Disc Brakes
  • 7000 lbs Axle
  • Hub and Rotor
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • 8 on 6-1/2
  • Camper
  • Car Hauler
  • Utility Trailer
  • 9/16 Inch Studs
  • Kodiak

9/16" Wheel bolts are included with this 2-assembly brake kit. Machine-finished rotors, e-coated calipers and e-coated 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
  • 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
  • E-coat finish on calipers and brackets provides corrosion resistance for freshwater and limited saltwater use
  • 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-plated 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 Machine-finished, 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
  • Seal: RG06-070 (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-REE-K Kodiak Disc Brakes - 2 Wheel Set - Integral Hub and Rotor - Standard Automotive Finish - 9/16" Wheel Bolts - 7,000 lbs

Replaces 2/HRCM-133-7-9

Installation Details K2HR79 Installation instructions

Customer Reviews

Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 7,000 lbs - K2HR79

Average Customer Rating:  4.6 out of 5 stars   (8 Customer Reviews)

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

- K2HR79

Good product but be sure you order the right stud size. I purchased better units with 1/2in studs and I needed 9/16in studs. Cost me for the mistake

- K2HR79

I put disc brakes on my 38 foot 5th wheel travel trailer due to the poor brake quality of the manufacturer. I now drive on the highway with much greater confidence for our safety. The stopping power of these brakes is incredible. The quality of the brakes are superior. I installed them myself finding the instructions accurate and easy to follow. There was a small part missing out of the brake line kit and the part was overnited to me by E Trailer. I have purchased many items from this company and have found the products to be of top quality and fairly priced. The customer service is outstanding. Thank you.

- K2HR79

Amazing product, Its few and far between that a kit shows up with all the needed parts and accessories, on top of the fact that when you remove the old drum brakes then add these BEEFY dudes on. Wow what a difference. Built like a rock and performs well past expectation. I will be heading to MT ID and Washington and work these things like a dog in the mountains. I have zero worries after install and ride around town

- K2HR79

Easy to install and no leaks

- K2HR79

I just received the product. It arrived in excellent shape. I ordered it on Sunday and it arrived today Wednesday Great. I will be installing the brakes on a 16 foot gooseneck dump trailer that is used every day. I'm tired of working on electric brakes.

- K2HR79

- K2HR79

- K2HR79


Ask the Experts about this Kodiak Trailer Brakes

  • Converting From Drum to Disc Brakes On a 2020 Grand Design Momentum with 7K Axles
    In order to convert the electric drum brakes on a 2020 Grand Design Momentum to hydraulic disc you can indeed use the Kodiak Disc Brake Kit part # K2HR79 which have oil bath lubrication. That said, you will need a list of other components which I have attached for you. Disc Brakes: part # K2HR79 (1 Per Axle) Inner Bearing: part # 25580 (2 Per Axle) Outer Bearing: part # 02475 (2 Per Axle) Seal: part # 9103309 (2 Per Axle) Brake Actuator and Lines: part # CAR-HBA16-2 (1) part # 9579-01...
    view full answer...
  • Disc Brake Kit Recommendation for a Dexter 7,000 D-70 Trailer Axle
    I did some checking and your Dexter D-70 axles have the number 42 spindle on them which is what the Kodiak Disc Brake Kit # K2HR79 that you referenced is designed to fit so it would work well for you. You will need to supply new bearings though. For that you would want the part # 25580 for the inner bearing and part # 02475 for the outer bearing. You should note that this outer bearing will be different from the one you pull out of your current hubs. Everything else will match right...
    view full answer...
  • Kodiak Disc Brake Kit for 2018 Jayco 377RLBH 5th Wheel
    I would be happy to help you set up your 2018 Jayco 377RLBH 5th wheel for disc brakes. We don't have a complete kit available with all the lines and bearings you will need but I can give you all of the part numbers. The Kodiak Disc Brake Kit - 13" item # K2HR79 you were looking at is a great set of disc brakes that will be perfect for your Dexter 7k axles. Depending on the region of the country you are in and how much traveling you do on salty roads I recommend spending a little extra on...
    view full answer...
  • How Long to Set Aside for Installing Disc Brake Kit on Trailer
    I'd set aside a day to pull off the install of disc brakes on your trailer like with the # K2HR79. It's not an overly complicated process at all. I attached an install video for this for you to check out to get an idea what you'd be getting into.
    view full answer...
  • What Type of Brake Fluid to Use with Kodiak Brake Assemblies
    Kodiak recommends DOT 3 brake fluid with their brake kits like the # K2HR79 that you referenced. Most applications can easily flush and be filled with a liter or quart so that's what I would grab at your local auto parts store.
    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...
  • Can I Use HR79 Brake Assembly with 02475 OB if Fifth Wheel has 14125A Bearings and a #42 Spindle
    I reached out to my contact at Kodiak and they advised me that the Kodiak Disc Brake Kit 7,000 lbs # K2HR712D takes ½” studs only. When you go to 9/16” studs, the 7k axle kit # K2HR79DS comes with an 8K hub that takes that only takes the # 02475 bearing. Because you cannot fit 9/16” or 5/8” studs in a 7K hub Kodiak switches it to a 8 K hub. The 6K, 7K, and 8K spindle is the same spindle, the only difference is the outer bearing changes.
    view full answer...
  • Parts Needed To Convert From Electric Drum To Hydraulic Disc Brakes On a Grand Design Solitude
    I have attached for you below all of the parts you'll need to convert from electric drum brakes to hydraulic disc brakes on a 2020 Grand Design Solitude 3550BH (Assuming You Have 7,000 Lb Axles). Kodiak Disc Brake Kit part # K2HR79 (2) HydraStar Vented Marine Electric Over Hydraulic Actuator part # HS381-8067 (1) Pollak Circuit Breaker part # PK54530 (1) *For Power Wire On HydraStar Actuator Kodiak Hydraulic Brake Line Kit part # 24TA-BLKIT (1) Inner Bearing part # 25580 (4) Outer...
    view full answer...
  • Best 7k Trailer Hub/Drums for Dexter Axle with 1/2 inch Wheel Studs
    I'd recommend the Kodiak kit part # K2HR79 as this fits a Dexter 7k trailer axle, has 1/2 inch diameter wheel studs, and also is Dacromet coated which means it will fight corrosion better than other options as well.
    view full answer...
  • What Are The Best Brakes For Triple Axle 5th Wheel Trailer With 7000lb Axles?
    For your triple axle 5th wheel trailer with 7000lb axles I recommend HydraStar Disc Brake Kit w/ Actuator for Triple Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K # HSE7K-TR1 as it comes with brakes/hubs, calipers, brake lines, and electric over hydraulic disc brake actuator needed to complete the install. Electric over hydraulic disc brakes are hands down the best option for a heavy trailer like yours and will give you the best braking performance. The only thing you will need is...
    view full answer...
  • Will the Kodiak Disc Brake Kit K2HR79 Fit a 2021 Jayco Jay Flight Travel Trailer
    You definitely will not need to replace your axle to upgrade to a disc brake kit, like the Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 7,000 lbs # K2HR79. However, you will need to verify a few things before purchasing to make sure they will fit properly, specifically the inner and outer bearings. This can be done 2 ways. The first, and the easiest, can be done by contacting Jayco and asking them which inner and outer bearings are used on your model. All you will...
    view full answer...
  • Recommended Disc Brake Conversion Kit for 2020 Grand Design Momentum with Triple Axle
    I have a solution for you, but unfortunately the # K2HR79 cannot accept 1/2" wheel studs. In order to convert from electric brakes to disc brakes with an oil bath, that will also allow you to use your current 8 on 6-1/2 bolt pattern with 1/2" studs you'll want to use the Dexter Disc Brake Kit # K71-694-695-11. These rotors have an E-coat finish for better protection against the elements and the hub comes with the bearings, races, seals and oil caps included, so you won't have to track down...
    view full answer...
  • Recommended Disc Brake Hub Kit To Use With Kodiak XL ProLube Kit
    The Kodiak XL ProLube Kit, part # XLPROLUBE2440KIT is not a fit on the # K2HR712 disc brake kit you mentioned because the hub is not threaded on the # K2HR712. I do have a solution that will work for you. I recommend part # K2HR79. This kit will fit the same size spindle, has threaded hubs which will work with the lube kit, and is rated for the same size wheels as the # K2HR712. The only difference is the size of the wheel bolts. The # K2HR79 has 9/16-inch bolts, where the # K2HR712...
    view full answer...
  • Recommended Disc Brake Upgrade Kit for 2014 Heartland Big Horn 3010RE 5th Wheel Trailer
    The Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - E-Coat - 7,000 lbs # K2HR79E or the Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 7,000 lbs # K2HR79 will work with the #42 spindles that are on 6K Dexter axles. Both of these options have the 9/16 lugs just one has the e-coat for corrosion resistance. I've attached videos to further assist with product information and installation. If you are upgrading from the original electric drums, then I also recommend...
    view full answer...
  • Will the Kodiak Electric Brake Kit Fit on the Timberen Axle-Less Systems
    The Kodiak Disc Brake Kit # K2HR79 will fit on the Timbren Axle-Less Suspension System # TASR7KS01 as both are rated for the same weight capacity of 7,000 lbs. and have the same bearing inner diameters. The bearings and grease seal are not included with the Kodiak Disk Brake Kit, you will need to buy these separately. Bearings: Inner: # 25580 Outer: # 02420 Seal: # RG06-070 I recommend the Timbren Axle System as each unit operates independently and fits any trailer frame...
    view full answer...
  • Disc Brake Conversion Kit for a 2019 Grand Design Momentum Toy Hauler
    Thanks for the picture! I have a great set of disc brakes for your 2019 Grand Design Momentum Toy Hauler. You are going to need a couple of other parts too to convert your trailer over to a disc brake set up. I recommend the Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 7,000 lbs item # K2HR79. This kit will fit your 2019 Grand Design Momentum Toy Hauler's 7,000 lbs axles and 8 on 6-1/2" bolt pattern. You're going to need an actuator. The HydraStar Vented Marine...
    view full answer...
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  • Replacing Electric Drum Brakes With Electric Over Hydraulic Disc Brakes On A 2017 Keystone Avalanche
    The information I could find about your 2017 Keystone Avalanche was fairly limited, it does look like 7,000 pound axles were used. Using that information, I do have a full parts list with quantities listed below and this is a pretty common upgrade, so it is definitely possible. However, I definitely recommend contacting Keystone with the trailer's VIN to double check that I am correct about said capacity. Though not necessarily a plug and play system, as there will not be, this is pretty...
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
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Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Jacob T
Video Edited:
Jacob T
Employee Kathleen M
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Kathleen M
Employee Dustin K
Video Edited:
Dustin K
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Mike S
Updated by:
Mike S
Employee David F
Test Fit:
David F

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