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

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

Item # K2HR858D
Our Price: $657.46
Accessories and Parts
This item qualifies for Free Shipping
Shipping Weight: 180 lbs
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5/8" 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. 1-800-940-8924 to order Kodiak accessories and parts part number K2HR858D 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 - Raw Finish - 8,000-lb Dexter Axle. Accessories and Parts reviews from real customers.
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Kodiak Accessories and Parts - K2HR858D

  • Trailer Brakes
  • Disc Brakes
  • Brake Assembly
  • Hub and Rotor Assembly
  • Kodiak
  • LH
  • RH
  • 8 on 6-1/2
  • 8000 lbs

5/8" 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: 5/8"
  • 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-5-REE-K Kodiak Disc Brakes - 2 Wheel Set - Integral Hub and Rotor - Standard Automotive Finish - 5/8" Wheel Bolts - 8,000 lbs - Dexter Axle

Replaces 2/HRCM-133-8D-10

Installation Details K2HR858D Installation instructions

Customer Satisfaction Score:

Customer Reviews

Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 8,000-lb Dexter Axle - K2HR858D

Average Customer Rating:  5.0 out of 5 stars   (6 Customer Reviews)

5/8" 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.


Great customer service and super fast shipping. I had many questions and they were answered with ease. We converted our hydraulic drum brakes to disc brakes. Highly recommend by D & D Horse Transport.

Love them!! Way better then the Dexter!
Angel w - 05/07/2020


6 Horse Trailer Triple Axle With 20' Living Quarters 18,000# no horses, 24,0000# with horses. Three 8K Dexter Electric Drum Brake Axles.

Took off old electric drum brakes (6 of them) without much problem other than "breaking" so many lug nuts.

Caliper brackets mounted up just fine and fit perfectly on the spindle bases of the axle.

After that, the rotors were installed with new bearings and seals, and again everything fit as it should. The old spindles were grease and the new hubs were oil bath. After researching, I decided to leave the zerks in and pack the bearings with grease even though they were also capable of oil bath.

Calipers fitted nicely although some of the powder coating on both parts were inconsistent, although the fit did not seem to cause a problem. The brakes pads are not sticking.

I picked the 1600 PSI Carlisle EOH actuator, I guess in part on its shape, and in part the brakes said 1500 PSI min and the 1600 PSI of the unit over 6 tires sounded good. It also was clearly stated as compatible with my 2011 F450 factory controller. It turned out to be easy to wire and mount. I used the suggested gauge wire and moved the controller as far back and close to the axles as I could.

I ordered several of the brake line kits and other than the rubber sections, I had to cut every line. The line was 3/16 and the literature suggested that runs more than 20' might be best served with 1/4. But trying to put together all the 1/4 parts proved too difficult so I stayed with the 3/16. Using a hand double flaring tool I had to make about 10 of my own flares, and about three of them leaked...a little, but still leak. Had to redo those.

The little 90 degree fitting on the calipers needed to be rotated in my installation, and it was impossible to turn it w/o bending it to being useless. I finally figured out that if the hose was installed first, and then you rotated it, the hose fitting kept the 90 from collapsing. So that all finally got done nicely.

Came time to bleed, and it went pretty easily. Had to jack the controller in the truck up to 6 plus to get enough flow to bleed effectively.

Mounted the tires up using the old lug nuts but with anti-seize this time, torqued to 150 ft lbs and made sure front bearings greased well... and went for the first road test.

On my f450 with truck controller set to EOH and at a setting of about 6, it stops the trailer better than my Freightliner Sportchassis M2 did with the electric brakes. The 6 trailer discs are doing a lot of work.

On my first 100 mile trip, the surface never got to over 100 degrees. Granted it was 60 outside, but still, they seemed to cool nicely. They also all read the same which indicated to me that they were all working the same, which was what I wanted, as this to me indicates that pads are not rubbing and all the bleeding is correct.

Progressiveness is nice and I'm glad I did not split a gut trying to go after the 1/4 steel tubing. If you crank it up to 8,9 or 10, which I might do if I haul all six horses, I'm confident it will stop great as now it is way too much with two horses.

Anyway, I'm happy and satisfied with the project. I wish my brake lines were straighter underneath and that they might need to be supported more frequently, but I'll tweak that soon.

You pretty much have to understand how brakes work to pull this off on your own. The few times I wanted to double check things, both e-trailer and Kodiak were pretty much instantly available and gave good help. It took me alone probably close to 40 man hours to completely finish and test, and I'm pretty good at working on things and had proper tools...other than the crappy hand line flaring tool :-)

On any significant trailer purchase that I ever make again, I will only get discs. They are at least 40%-50% stronger stopping (maybe more) than the electric drums were, and of course they will last longer, be easier to service, and I think are surely more reliable. Also, the promise of not fading so badly is true. On our first "emergency" red light stop, I was gobsmacked (for my NZ friends) about how fast we could stop and no fade. I can think of no disadvantage other than spoiling you when you use one of your other trailers with electric drums, and wish they were EOH discs.

I have full backseat of kids, my bride, and 6 of our horses being towed along, and doing everything you can to STOP, not just pull, is of utmost importance.


Everything you need for brake replacement for one 7-8K axle with hydraulic brakes. These have held up excellent over the past year, no issues.


Customer service is great. From ordering and then being notify it shipped and to tracking it and finally letting us know it was delivered.


Fast service



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