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  1. Trailer Brakes
  2. Kodiak
  3. Disc Brakes
  4. 12000 lbs Axle
  5. Rotor
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO

Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO

Item # K2HR12A11-120DW
Our Price: $1,607.86
You Save: $367.14
Trailer Brakes
This item qualifies for Free Shipping
Shipping Weight: 178 lbs
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Machine-finished rotors and e-coated calipers and mounting brackets are included in this 2-wheel-assembly disc brake kit. Designed for 12,000-lb ALKO axles with #120 spindles. Great Prices for the best trailer brakes from Kodiak. Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO part number K2HR12A11-120DW can be ordered online at or call 1-800-940-8924 for expert service.
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Kodiak Trailer Brakes - K2HR12A11-120DW

  • Disc Brakes
  • 12000 lbs Axle
  • Rotor
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • Camper
  • Car Hauler
  • Utility Trailer
  • 8 on 6-1/2
  • Kodiak

Machine-finished rotors and e-coated calipers and mounting brackets are included in this 2-wheel-assembly disc brake kit. Designed for 12,000-lb ALKO axles with #120 spindles.


  • Brake assemblies make it easy to change from an idler axle to a disc brake axle
  • Disc brakes deliver better performance than drum brakes
    • 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
  • Slip-on, cast iron, over-the-hub rotors
    • Fit over idler hubs and are held in place by included bolts
      • Rotor spacers ensure proper positioning
    • Prevent heat-related damage with vented design that effectively dissipates heat
  • 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
    • Stainless steel 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
  • Kit includes 2 full brake assemblies
    • 2 Machine-finished, cast iron rotors
    • 2 Rotor spacers
    • 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: 12,000 lbs
    • Axle type: ALKO
      • #120 Spindle
  • Rotor diameter: 11.35"
  • Brake flange to inner bearing shoulder: 4.78"
  • Pilot hole diameter: 4.88"
  • 3-Year warranty

Bearing, Race and Seal Information

  • Bearings (sold separately)
    • Inner bearing: JM511946
    • Outer bearing: JM205149
  • Races (included)
    • Inner race: JM511910
    • Outer race: JM205110
  • Seal: 10-56 (sold separately)
    • Inner diameter: 3.125"
    • Outer diameter: 4.5"

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.

Over-the-Hub Rotor

Kodiak's slip-on, cast iron rotor makes it easy to convert an idler axle to a disc brake axle. Simply place the rotor over your hub. It is most often wheel bolt piloted for a loose fit and then held in place by the wheel itself. With a separate rotor and hub, you can easily repair or replace one element of your brake system without having to junk the whole thing.


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.

2/H-11-12A-HD-REER Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO


Customer Satisfaction Score:

Customer Reviews

Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO - K2HR12A11-120DW

Average Customer Rating:  5.0 out of 5 stars   (4 Customer Reviews)

Machine-finished rotors and e-coated calipers and mounting brackets are included in this 2-wheel-assembly disc brake kit. Designed for 12,000-lb ALKO axles with #120 spindles.


Installed the K2HR12A11-120DW Kodiak Disc Brake kit 11.35" Rotor-#120 Spindle -12k-ALKO. The kit seems to be really good quality and easy to install, it was installed on a 2011 model PJ trailer and everything fit as it should and the brakes bleed easily also we uploaded pictures of the install. Thanks also to customer service they were really nice and easy to talk with to resolve the shipping issue that we had.


The part for my Pj Trailer was the right parts. I'm very happy with the Merchandise..




See what our Experts say about this Kodiak Trailer Brakes

  • Disc Brake Conversion Kit that Fits ALKO 12k Axle with Dual Wheel Setup
    Yes, I spoke with my contact at Kodiak and I sent him the picture you submitted to us and told him what axle setup you have and he said that the Kodiak Disc Brake Kit part # K2HR12A11-120DW will fit and work well. It will fit with 16 inch wheels on an ALKO dual wheel 12k axle.
    view full answer...
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  • Compatibility of Kodiak Disc Brake Kit For 12,000LB AL-KO Axles With 17.5" Wheels
    The Kodiak Disc Brake Kit # K2HR12A11-120DW will work with your 17.5" wheels as long as they have an 8 on 6-1/2" Lug pattern. This is our only kit for the 12K AL-KO axles that you have.
    view full answer...
  • Disc Brake Kit that Fits 10k AL-KO Trailer Axles
    For a 10k AL-KO trailer axle we have the Kodiak Disc Brake Kit part # K2HR10A11RERR but the # K2HR12A11-120DW that you referenced is designed for a 12k AL-KO axle.
    view full answer...
  • Replacement Oil Cap for Kodiak 10k Disc Brake Kit K2HR12A11-120DW
    The replacement oil cap part number for the Kodiak 10k disc brake kit part # K2HR12A11-120DW that you referenced is the part # K1014PCAP.
    view full answer...
  • Hub and Rotor Replacement Kit for ALKO 12k Axles
    The best solution we have is the Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO # K2HR12A11-120DW which is designed for your 12k ALKO brake setup. The Dexter rotor you mentioned would not fit and we do not have any rotors by themselves that fit your application.
    view full answer...
  • Is a New Electric Over Hydraulic Actuator Required When Converting from Drum to Disc Brakes
    Yes you will need a new electric over hydraulic actuator to go from drum to disc as the disc brake setups require a higher psi rating. The best option is the HydraStar part # HBA16 as it has the best reputation for reliability and is the fastest reacting as well so it's what we recommend the highest. Since you are going to disc brakes you'll need a flexible line to go from the caliper to the axle since the caliper moves. For that you'd want the part # # T0776500 .
    view full answer...
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  • What Bearings Does Kodiak Disc Brake Kit # K2HR12A11-120DW Use
    The trailer hub part # K2HR12A11-120DW fits a 120 spindle which uses the bearings # JM205149 and # TRJM511946.
    view full answer...
  • Parts Needed to Convert AL KO 12k Dual Wheel Axle to Disc Brakes
    For your AL KO 12k dual wheel axle the Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO # K2HR12A11-120DW that you referenced is correct and comes with everything needed to convert to a disc setup. There isn't a slip on style rotor setup that would convert your current hubs to disc though so this would be only option. Then for a kit that includes the best actuator and all of the other components to convert to electric over hydraulic you'd want the Hydrastar kit part # HBA16-252-82...
    view full answer...
  • Disc Brake Kit That Fits Hayes/AL-KO 12,000 lb Axle With #120 Spindle
    Yes, your Hayes/AL-KO 12,000 lb axle with a #120 spindle is absolutely compatible with the brake kit you mentioned, the Kodiak Disc Brake Kit # K2HR12A11-120DW. This kit does require you get the bearings and seal separately, but comes with the races so you don't have to purchase those as well. What you will need are two each of the following: - Replacement Trailer Hub Bearing # TRJM511946 - Replacement Trailer Hub Bearing # JM205149 - Seal # 10-56
    view full answer...
  • Will The Kodiak Disc Brake Kit K2HR12A11-120DW Fit With 16" Wheels?
    The Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO # K2HR12A11-120DW can indeed be used with 16" wheels. Due to the diameter of the rotor and size of the calipers, this is the smallest wheel they will be able to be used with. Something commonly missed with this set up is that, though the oil cap is included, the bearings and seals are not. If you are going to be replacing these as well, you will need the following parts to complete each kit: Qty.2 - Replacement Trailer...
    view full answer...
  • How To Convert Trailer with 12K Axles from Drum to Electric Over Hydraulic Disc Brakes
    Yes, we do offer disc brakes for trailers with 12,000 lbs axles. I recommend the Kodiak Disc Brake Kit, part # K2HR12A11-120DW for AL-KO or part # K2R1258L12 for Dexter/Lippert (Most Common) axles. If you don't know what axles you have you'll need to crawl under the trailer and find the tag on the beam which will list the axle manufacturer. In order to complete your setup you'll just need the Hydrastar Marine Electric Over Hydraulic Actuator Kit part # CAR-HBA16-2. This works for single...
    view full answer...
  • Disc Brake Kit And Parts Needed For a 1974 Landoll Hauloll Trailer With #120 Axle Spindles
    The Kodiak Disc Brake Kit # K2HR12A11-120DW will fit a trailer axle with a #120 spindle. You can confirm your spindle is is a #120 on your axle by ensuring the Inner Bearing # TRJM511946 (2.559" ID), Outer Bearing # JM205149 (1.969" ID) and Oil Seal # 10-56 (3.125" ID) measurements are the same on your spindle. You will need 2 of the Inner Bearings # TRJM511946, Outer Bearings # JM205149, Oil Seals # 10-56 and a bottle of Bearing Oil # XLPROLUBE for each set of the Kodiak Disc Brake Kits...
    view full answer...
  • Correct Lug Nuts For Kodiak Disc Brake Kit K2HR12A11-120DW Using Wheel Retainer Rings
    I reached out to my contact at Kodiak and the Kodiak Disc Brake Kit - 11.35" Rotor - #120 Spindle - 12K - ALKO # K2HR12A11-120DW you were looking at uses 5/8" wheel studs. Wheel retainer rings like the # 33-52-1 for 9000-12000lb axles like you have will need to use the Trailer Wheel Lug Nut - 5/8" # 6-109. Your # 6-70-1 is designed for 1/2" studs and will not work. I included videos of the products mentioned for you to take a look at.
    view full answer...
  • Which Disc Brake Conversion Kit For 10000lb Dexter Axle Made In 2020
    For your 10000lb Dexter oil bath axle made in 2020 you will need to go with the Kodiak Disc Brake Kit # K2R1058D11E since your axle uses leaf springs, and is not a torsion axle. This will work with dual 16" wheels so you will need to make sure that is what your trailer currently uses. You will need to use Dexter Axle Oil Hub # 008-430-03 for each spindle to allow you to install the above kit unless you already have idler hubs. For an actuator to control these new disc brakes I recommend...
    view full answer...
  • Replacement Rotor For Kodiak Disc Brake Kit # K2HR12A11-120DW and Compatibility
    The Kodiak Disc Brake Kit # K2HR12A11-120DW will use the Kodiak 11" Rotor # KR1110Q which is 11.35" in diameter. Your current rotor only being 10-3/4" will not fit with this kit. The disc brake kit is designed to fit on ALKO 12,000lb axles that use a # 120 spindle. You can verify the fit by checking your current bearings or the dimensions of your spindle. Inner Bearing # TRJM511946(2.559" inner diameter) Outer Bearing # JM205149(1.969" inner diameter) Oil Seal # 10-56(3.125" inner diameter)
    view full answer...
  • Replacement Hub And Drums For Dexter 12K Axle
    We have the perfect idler hub set up for you! The Dexter Trailer Idler Hub Assembly for 12,000-lb Axles # 8-214-8UC1 has an inner bearing # 3984 and an outer bearing # 28682. The idler hub has a bolt pattern of 8 on 6-1/2 inches. The hub has an oil bath system that allows for easy maintenance. The Drum and Mounting Bolts # 7-103 are sold separately. The Kodiak Disc Brake Kit # K2HR12A11-120DW will not work with your 12K Dexter axle because this kit is only for a 12,000 ALKO axle. The...
    view full answer...
  • Axle Hub That Uses Bearings JM511946 and JM205149, Race JM511910 and JM205110
    The Kodiak Disc Brake Kit # K2HR12A11-120DW is the only hub we have that uses the Inner Bearing # TRJM511946, Outer Bearing # JM205149, Inner Race # TRJM511910, and Outer Race # JM205110. Those bearings are what fits with an ALKO axles using #120 spindles. If that hub is what you are looking for you will need to purchase the Bearings # TRJM511946 and # JM205149 separately along with a Oil Seal # 10-56 for each hub.
    view full answer...
  • Replacement Bearings and Seal for an Al-Ko 12K Axle
    Thanks for reaching out! In order to replace the bearings and seal for your 12K hub assembly you'll need to piece the following parts together as we currently (December 2022) don't have a whole bearing kit that includes all of the parts you're needing: Inner Bearing - # TRJM511946 Inner Race - # TRJM511910 Outer Bering - # JM205149 Outer Race - # JM205110 Oil Seal - # 10-56 (inner diameter of 3.125" and outer diameter of 4.500") These are the parts that come with the Kodiak Disc Brake...
    view full answer...
  • Disc Brake Assemblies For Changing A 12,000LB Dexter Axle To Hydraulic Disc Brakes
    We have the Kodiak Disc Brake Kit # K2R1258L12 that is designed to fit your 12,000lb Dexter axle. You will need to ensure that you have the Standard Duty 12,000lb axle as this kit will not fit if its a Heavy Duty 12,000lb axle. If you need help determining which you have please let me know your axle serial number that is on the information sticker for the axle or can also be found stamped in the axle tube on the rear of the axle on the passenger side. The Kodiak Disc Brake Kit # K2HR12A11-120DW...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Written by:
Mike S

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