1. Trailer Brakes
  2. Kodiak
  3. Disc Brakes
  4. 8000 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 - 8,000-lb Dexter

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

Item # K2HR89D
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Our Price: $661.14
Trailer Brakes
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Shipping Weight: 420 lbs
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K2HR89D - 8 on 6-1/2 Kodiak Disc Brakes
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In Use/Installed

9/16" Bolts are included with this 2-assembly brake kit. Machine-finished rotors, e-coated calipers and e-coated mounting brackets fit 8,000-lb Dexter axles and 16" and larger wheels. 13" Rotor features 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 - 8,000-lb Dexter part number K2HR89D can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (1)
  • Q & A (1)
  • Videos (3)
  • Photos
  • Why etrailer?

Kodiak Trailer Brakes - K2HR89D

  • Disc Brakes
  • 8000 lbs Axle
  • Hub and Rotor
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Kodiak
  • 8 on 6-1/2
  • Brake Set
  • 9/16 Inch Studs

9/16" Bolts are included with this 2-assembly brake kit. Machine-finished rotors, e-coated calipers and e-coated mounting brackets fit 8,000-lb Dexter axles and 16" and larger wheels. 13" Rotor features 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
    • 4-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: 8,000 lbs
      • #42 Spindle
    • Axle type: Dexter
    • Wheel size: 16" and larger
  • Bolt pattern: 8 on 6-1/2"
  • Rotor diameter: 13"
  • Brake flange configuration: 4 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 4-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-133-8D-9-REE-K Kodiak Disc Brakes - 2 Wheel Set - Integral Hub and Rotor - Standard Automotive Finish - 9/16" Wheel Bolts - 8,000 lbs - Dexter Axle

Replaces 2/HRCM-133-8D-9

Installation Details K2HR89D Installation instructions

Video of Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 8,000-lb Dexter

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

Video Transcript for Kodiak Disc Brake Kit Installation - 2014 Heartland RV Bighorn Fifth Wheel

Speaker 1: Today on our 2014 Heartland Bighorn, we're gonna be installing Kodiak's disc brake kit. Part number K2HR89D. Your disc brake set up does not include bearings or grease seals. You can pick up bearings here at etrailer.com with part number 02475-02475. And part number 25580-25580 for the inner bearing. And grease seals to seal it all up with part number RG06-070.These disc brakes can be used as a replacement or like we're using them today, to convert from electric to electric over hydraulic brakes.The brackets fit 8,000 pound Dexter axles and 16 inch and larger wheels.The 13 inch rotor features an eight on six and a half inch bolt pattern.We've already got our passenger side installed.

We'll show you how to install the driver side. It's gonna install identically to our passenger side and also with every other trailer, it will install the same way.We'll knock off our cap first so we can remove our old hub. You'll need to remove the cotter pin, so you can take the nut off, or in some cases it may have a locking washer that you'll just pull off. On our vehicle here, we do just have a locking washer.We're gonna remove the nut with a pair of channel locks. And then our whole assembly will just pull off.

The bearing and washer is going to come out with it. And we'll just set these aside.The assembly behind it, we'll remove by taking off the four nuts. You can now pull your whole assembly off. You'll need to cut the wires here and then you can just set it aside. And you can just leave the electrical wires there as they won't be hooked up when we install our actuator.Now, we can install our caliper bracket.

You can either reuse the same hardware that you took off or you can get new hardware. You wanna make sure that when you install it, that the caliper bracket is facing towards the rear.Now, we'll tighten all that down using the same size sockets.How, you'll pack your inner bearing. If you need some wheeler and grease, you can pick some up here at etrailer.com. Let's put our inner bearing in our hub, and then we'll install the grease seal. There are special tools to install these grease seals.

If you don't have those, you can use a socket or a piece of wood or whatever you have around to knock it in place.We're gonna get it started with a piece of wood. Now that we've got it flushed, we're gonna get it the rest of the way sealed because this has a chambered edge, so it needs to go farther. We're just gonna use a socket to go down the rest of the way. Working it around.And then we'll pack our outer bearing.Now, we can install the rotor on to our spindle here. We'll take our outer bearing, put it on now.Now, we'll just reinstall it in reverse order that we took our other hub off. Washer nut and securing clip. I like to tighten mine all the way down, rotate it, then back back it off and re-secure it till it's just barely snug so that way we have just a hint of play when we're done.Your lock flange will only go on certain ways, so you may have to slightly snug or loosen it to get that to fit.Now, that's finished. You just need to pull your hub up with grease using the grease surg 00:03:46.Now, you just install your cap on the end. And if you need to, use a pair of channel locks to fully tighten that down.Next, we'll install our brake caliper. That just slides over your rotor.Now, you can go back and tighten down your hardware and torque it to the specifications found in your instructions.Our brake hose hooks up on the back side here.Now, I'll show you how to bleed the brakes. You wanna start at the wheel farthest from your master cylinder. That's your actuating unit. It's best to use a hose so that way you don't make a mess with the brake fluid and run it into a container. We're just using a water bottle there. And we're using a five sixteenths wrench to break open our bleeder screw here. And it's best to use an extra set of hands to pull the break away pin up on the front of your trailer, and that will acuate your brakes.So we're gonna go ahead and crake this loose and have our assistant pull that pin.Go ahead and pull the pin.And you just wanna do this in small spurts.You can go ahead and put the pin back in.And you're gonna do this repeatedly until your fluid comes out clear, just like it was here, with no air bubbles in it.And we're gonna move from one wheel to the next, repeating that same process until it's clear on all of our wheels.And now we can put our wheels back in place, torque them down, and we're all set.And that completes our installation of Kodiak's disc brake kit on our 2014 Heartland Bighorn.

Customer Reviews

Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 8,000-lb Dexter - K2HR89D

Average Customer Rating:  5.0 out of 5 stars   (1 Customer Reviews)

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

- K2HR89D

We were looking for a more reliable brake system as we travel a lot and installed disc brakes to make stopping better installation was easy. Added parts were easily added and shipped Sales people at ETRAILER were very helpful 855508


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Info for this part was:

Written by:
Lindsey S
Expert Research:
Jameson C
Video Edited:
Kathleen M
Video Edited:
Dustin K
Video Edited:
Chris R
Updated by:
Sarah W
Updated by:
Brian T
Updated by:
Hannah L
Updated by:
Mike S
Test Fit:
David F

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