1. Trailer Brakes
  2. Kodiak
  3. Disc Brakes
  4. 12000 lbs Axle
  5. 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 - 11" Rotor - 8 on 6.5 - Raw Finish - Leaf Spring - 12K - Dexter/Lippert

Kodiak Disc Brake Kit - 11" Rotor - 8 on 6.5 - Raw Finish - Leaf Spring - 12K - Dexter/Lippert

Item # K2R1258L12
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Kodiak Disc Brakes - K2R1258L12
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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 Dexter and Lippert axles with leaf springs. Fits 16" dual wheels. Lowest Prices for the best trailer brakes from Kodiak. Kodiak Disc Brake Kit - 11" Rotor - 8 on 6.5 - Raw Finish - Leaf Spring - 12K - Dexter/Lippert part number K2R1258L12 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (2)
  • Q & A (11)
  • Videos (2)
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  • Why etrailer?

Kodiak Trailer Brakes - K2R1258L12

  • Disc Brakes
  • 12000 lbs Axle
  • 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

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 Dexter and Lippert axles with leaf springs. Fits 16" dual wheels.


Features:

  • 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
    • 7-Bolt brake flange mounting configuration - weld-on flange available (sold separately)
  • 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


Specs:

  • Fits:
    • Axle capacity: 12,000 lbs
    • Axle type: Dexter and Lippert
    • Wheel size: 16" dual wheels
  • Bolt pattern: 8 on 6-1/2"
  • Wheel bolt diameter: 5/8"
  • Rotor diameter: 11"
  • Brake flange configuration: 7 bolt
  • 3-Year warranty


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.


Calipers

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 7-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/R-11-12D-HD-REER Kodiak Disc Brakes - 2 Wheel Set - Rotor Only - Machined - 12,000 lbs - Dexter / Lippert Axles

Replaces 2RCMS-11-12L-KIT, 2/RCMS-11-12L and 2/RCMS-11-12D-HD-KIT

Installation Details K2R1258L12 Installation instructions



Video of Kodiak Disc Brake Kit - 11" Rotor - 8 on 6.5 - Raw Finish - Leaf Spring - 12K - Dexter/Lippert

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




Video Transcript for Kodiak Disc Brake Kit Review

Speaker 1: Today we're going to be taking a look at the Kodiak line of Disc Brake Kits. Now, these kits are available in multiple configurations to fit multiple size axles. They're also available in several different finishes.A disc brake kit like this one from Kodiak is an excellent solution to give us good braking force. Typically, for this kit anyway, you're looking at like a 3500-pound axle. A lot of boat applications, you're hauling a boat sometimes miles and miles and miles, and without brakes on your trailer, you put a lot of unnecessary stress and strain on your truck. A braking kit like this allows us to take the stress, the strain off the braking system on our truck but also gives us a safer ride.In this application we've got a surge coupler at the front of the trailer, so as the truck slows it applies the hydraulic fluid pressure, squeezing our caliper together giving us excellent stopping abilities.

The rotors, calipers, and the ceramic pads are all automotive grade, so they're going to be made to the highest standards being sure we get excellent braking capabilities.Now when we compare a disc brake kit like this to a hydraulic drum-style brake, there are several advantages. Of course, we all know disc brakes tend to work better than drum brakes. They lock up less. We typically don't have the moisture being held inside. Especially in a marine application, that hub fills up with water, that moisture stays inside, causes some corrosion issues.

In this situation, once we bring these out of the water, everything's going to drain away. Air can get to it very readily and dry everything up.Another advantage we're going to get with this particular kit over the other disc brake kits available, the material composition is very corrosion-resistant. Our rotor, caliper, all stainless steel, plus they take that a step further, put a Dacramet finish all the way around. So that's going to work out really well, especially in a marine application like this, but also just on a utility trailer, keeping everything nice, corrosion-free. It's also going to be an excellent, excellent choice if you use it in a saltwater-type application.Something else you'll notice, pretty common on automobile applications, not usually on trailers, is going to be the ventilated rotor here.

So you've got two wear surfaces here and here. Those are going to be separated to allow air to flow freely in there and get everything cooled off to give us premium braking performance every time we hit those brakes.All right. With the bracket installed, we can move onto installing our rotor. That's one of the big benefits I like about this kit. You don't have the whole disc with the hub assembly in it.

So if you ever need to replace the disc, you're just replacing the disc, not your entire hub. This is going to fit right on our idler hub just like that, very common on automobile applications. They call this more like a top hat rotor where it it slides over your lugs, and then your wheel is actually going to hold that in and flush.Next, we'll move on to getting our caliper installed. Now the calipers can go either side. You don't have to have a left and a right. You can see we've got a bleeder screw on both sides. We want, of course, for our hydraulic connection to be facing in. Our slide bolts are going to come in this way just like that, and then these two portions are going to go on the back side of our bracket. So we slide that over, bring it in, and then we'll just push our bolts in, line them up with our holes and get them started. Now those do have loctite on them, so you'll just get them started a little bit, and then we'll use a 13mm socket and snug them on down.Now that we've got those snugged down, we'll use our torque wrench and we're going to torque them down to the specifications listed in the instructions. With our brake assemblies in place, it's time at this point to install our tire back on. Now, we do recommend using a torque wrench and torquing these down properly per the 1/2" stud application. Something we've seen, especially in the automobile industry, if you tighten these lug nuts down too much, you might cause that rotor to warp a little, decreasing your performance. That's going to complete our look at the Kodiak line of Disc Brake Kits.


Customer Reviews

Kodiak Disc Brake Kit - 11" Rotor - 8 on 6.5 - Raw Finish - Leaf Spring - 12K - Dexter/Lippert - K2R1258L12

Average Customer Rating:  3.0 out of 5 stars   (2 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 Dexter and Lippert axles with leaf springs. Fits 16" dual wheels.

- K2R1258L12
by:

Just down right AWESOME!!!! 497306



- K2R1258L12
by:

I called first to see if a brake kit would fit my trailer. They told me yes. I ordered the brake kit. When I received the kit it was missing pieces so I called Angela W. She was very rude, arrogant, and clearly doesn't know what she's talking about. NO HELP. Turns out the brake kit was not compatible with my trailer like they said it was. I called and told them I needed to send back the kit that came in three boxes and they sent me a label for 1 box. While at the ups store I waited for over 45 minutes on hold and ended up having to pay to ship one of the boxes. $200! I called them early the next day and they told me they would not be reimbursing me for the shipping. Horrible customer service and horrible service. I wouldn't recommend them to anyone. 402204


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Ask the Experts about this Kodiak Trailer Brakes

  • Will Kodiak Disc Brake Kit K2R1258L12 Fit a 12K Rockwell Axle on PJ Trailer
    I am assuming that one of the axles has brakes and the other does not. If that is the case and the axle that does not have brakes has idler hubs then you can use Kodiak kit # K2R1258L12 provided that the hub has an 8 on 6-1/2 bolt pattern and brake mounting flanges on the axle. You will also need some addition brake line and related parts such as what is included in kit # 15SI-BLKIT. Or it may be more beneficial to go ahead and replace all the lines with a tandem axle kit # 24TA-BLKIT.
    view full answer...
  • Will Kodiak Disc Brake Kit # K2R1258L12 Fit 12 Dexter Axle
    As long as your Dexter 12k axles have idler hubs installed on them Kodiak Disc Brake Kit # K2R1258L12 is a confirmed fit that would work well. An idler hub is a hub that does not have a brake drum or rotor built into it.
    view full answer...
  • Kodiak Disc Brake Kit for 12,000 lb Axles
    The Kodiak Disc Brake Kit # K2R1258L12 you referenced is a fit for 12,000-lb Dexter and Lippert axles with leaf springs. Keep in mind your current idler hubs need to have an 8 on 6-1/2" bolt pattern and a 7-bolt brake flange. If you are not sure what bolt pattern you have I've added a link on this page to a help article that explains how to determine your bolt pattern. I have also added a link to a help article on adding disc brakes which you may find useful.
    view full answer...
  • Parts Needed to Add Disc Brakes to Trailer with Dexter 12K Axles w/ Electric Drum Brakes
    The Kodiak # K2R1258L12 Disc Brake Kit is compatible with a 12K Dexter axle with a 7-bolt brake mounting flange. Your current wheels/hubs should have an 8 on 6-1/2 inch bolt pattern. You'll also need an electric over hydraulic brake actuator, a brake line kit, a break away system and a brake controller that's compatible with electric over hydraulic brake systems. For the electric over hydraulic actuator, I'd recommend going with the Hydrastar # HBA16. Our install techs have found...
    view full answer...
  • Replacement Caliper Recommendation for Kodiak Disc Brake Kit part # K2R1258L12
    The replacement calipers of the Kodiak kit part # K2R1258L12 that you referenced is # KDBC2250E. The kit you have does have a 3 year warranty on it that protects it from manufacturer defects. Do you know why yours started to leak?
    view full answer...
  • What Components Are Needed To Convert Electric to Hydraulic Disc Brakes On 12K Trailer
    I have attached a link to a helpful article that explains everything that is needed when adding hydraulic disc brakes to your trailer. In addition to a kit like part # K2R1258L12 you will need to make sure you have the right brake mount flange, and you will need to add hydraulic brake lines to your trailer. You will also need a surge brake actuator like part # T4750820 installed on your trailer frame. I have attached links to the brake lines we offer, and to the actuators we offer.
    view full answer...
  • Kodiak Disc Brake Kit Recommendation for Trailer with Dexter Torflex 3,500 lb Axles
    Depends on the size of your wheels what Kodiak disc brake kit you'll need is. If you have a 14 inch or larger diameter wheel I would recommend the Dacromet and Stainless kit part # K2HR35DS or if you have smaller wheels than that you'd want the part # K2HR35D-8. These are totally compatible with Dexter Torflex axles also.
    view full answer...
  • Recommended Conversion from Electric Drum Brakes to Electric Over Hydraulic Disc Brakes
    The Kodiak Disc Brake Kit - 11" Rotor - 8 on 6.5 - Raw Finish - Leaf Spring - 12K - Dexter/Lippert # K2R1258L12 is the option for dual wheel axles and will use idler hubs compatible with your axles for mounting the wheels. Then I recommend the HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi # HBA16-252-82. If you need help in getting the correct idler hubs for this conversion, you can pull one of your current brake drum hubs and get the bearing numbers off...
    view full answer...
  • Replacement Disc Brake Kit for a Dexter 12K Axle
    The correct Kodiak Disc Brake Kit for a Dexter 12K Axle is part # K2R1258L12, not part # K2R1058D11E. I spoke with Dexter and they stated the latter would only work if you have a Dexter Hub 008-430-03. It looks like the brake mounting flange bolt pattern, rotor diameter, and calipers are the same between the above two kits but I again would not be able to confirm direct compatibility unless using the Dexter Hub 008-430-03.
    view full answer...
  • Converting Drum Brakes On A Dexter Military Trailer Axle With 8 On 6-1/2
    I would be happy to help you choose the correct brake setup for your Dexter Torflex Axle, however there are no manufacturers that currently make electric disc brakes. All disc brakes are powered by a hydraulic cylinder. If you wish to use a disc brake setup controlled by an in-cab brake controller, you will want to consider the HydraStar Electric Over Hydraulic Actuator for Disc Brakes part # HBA16 and an electric brake controller such as the Tekonsha Prodigy P3 Trailer Brake Controller...
    view full answer...
  • Is Dexter DX Series Actuator Compatible With Kodiak Hydraulic Disc Brake Kit
    The Dexter DX Series brake actuator # K71-650 is for drum brakes with 1,000psi while the Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes # K71-651 has 1,600 psi so that is the actuator you'll need to go with the Kodiak hydraulic disc brake kit # K2R1258L12. Disc brakes will require a higher psi than drum brakes. Included are additional video resources for more information.
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Jeffrey L
Installed by:
Jeff D
Video Edited:
Jacob T
Video Edited:
Kathleen M
Written by:
Sarah W
Updated by:
Hannah L
Updated by:
Mike S

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