bing tracking image
  1. Trailer Brakes
  2. Kodiak
  3. 5200 lbs Axle
  4. 6000 lbs Axle
  5. Disc Brakes
  6. Rotor
Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs

Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs

Item # K2R526S
Our Price: $1,120.49
You Save: $41.88
Trailer Brakes
This item qualifies for Free Shipping
Shipping Weight: 66 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
Trailer disc brake kit includes 2 assemblies with rustproof, stainless steel rotors; calipers; and mounting brackets. Assemblies fit 5,200-lb to 6,000-lb axles and 15" and larger wheels. The 12" rotor features a 6 on 5-1/2 bolt pattern. Lowest Prices for the best trailer brakes from Kodiak. Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs part number K2R526S can be ordered online at or call 1-800-496-5010 for expert service.
  • All Info
  • Reviews (16)
  • Q & A (0)
  • Photos
  • Why etrailer?

Kodiak Trailer Brakes - K2R526S

  • 5200 lbs Axle
  • 6000 lbs Axle
  • Disc Brakes
  • Rotor
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • 16 Inch Wheel
  • Boat Trailer
  • Snow Trailer
  • 6 on 5-1/2
  • Kodiak

Trailer disc brake kit includes 2 assemblies with rustproof, stainless steel rotors; calipers; and mounting brackets. Assemblies fit 5,200-lb to 6,000-lb axles and 15" and larger wheels. The 12" rotor features a 6 on 5-1/2 bolt pattern.


  • 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
  • Stainless steel construction is durable and rustproof - ideal for extended marine use
    • 1,000-Hour salt-spray rating
  • Slip-on, over-the-hub rotors
    • Fit over standard idler hub and are held in place by wheel and wheel bolts
    • Remove easily for maintenance
      • No need to replace entire hub-and-rotor assembly if only hub or rotor becomes damaged
    • Increase distance from hub face to hub face by 1/2"
    • Prevent heat-related damage with vented design that effectively dissipates heat
  • Stainless steel calipers are self-adjusting for smooth, equal braking
    • Stainless steel construction does not flex like aluminum
      • Absolute corrosion protection - ideal for extended marine use
    • Low-drag design retracts piston farther than other calipers for a cooler-running brake
    • Stainless steel piston is 2-1/4" in diameter - 30 percent larger than other brands
      • More braking torque than the competition
    • High-performance, ceramic brake pads
  • Stainless steel 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 Stainless steel rotors
    • 2 Stainless steel calipers
    • 2 Stainless steel 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: 5,200 lbs - 6,000 lbs
      • #42 Spindle
    • Wheel size: 15" and larger
  • Bolt pattern: 6 on 5-1/2"
  • Overall rotor diameter: 12"
  • Brake flange configuration: 5 bolt
  • 6-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, stainless steel 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 stainless steel to prevent flexing and rust. 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, corrosion-resistant stainless steel 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-12-SSS-K Kodiak Disc Brakes - 2 Wheel Set - Rotor Only - Stainless Steel - 5,200 lbs - 6,000 lbs

Replaces 2/RCM-12-SS-K

Installation Details K2R526S Installation instructions

Customer Satisfaction Score:

Customer Reviews

Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs - K2R526S

Average Customer Rating:  4.6 out of 5 stars   (16 Customer Reviews)

Trailer disc brake kit includes 2 assemblies with rustproof, stainless steel rotors; calipers; and mounting brackets. Assemblies fit 5,200-lb to 6,000-lb axles and 15" and larger wheels. The 12" rotor features a 6 on 5-1/2 bolt pattern.


Perfect fit and great price! Service from Etrailer was great, they even processed a price match for me a few weeks after delivery of my order. The service has been fantastic and I’m very pleased with the quality of these Kodiak Stainless Steel Brakes, Rotors and Hubs for my boat trailer after removing old leaf springs and upgrading to torsion axels. I’m also eliminating the surge brake actuator and going to electric over hydraulic for better performance and braking power and replacing all brake lines with Kodiak brake lines. I’ve included some before and after pics of the install for reference.


Big upgrade to my non stainless breaks before! My only complaint is I did have to run to the hardware store and grab 10 3/8”x1” bolts and nuts. The install takes a few hours and 2 people to bleed the breaks.


Seeing how quickly high end boat trailers rusted out from salt water when I was a kid in the 1960s, I built a trailer for myself using heavily galvanized junk yard steel and took the springs apart, slathering each leaf with a very viscous grease. This trailer lasted for over twenty years of salt water use. My current triple axle aluminum trailer has needed new hubs, calipers and rotors about every 4 years due to corrosion even with good flushing after each use, so I ordered Kodiak SS 12" rotors, SS calipers and SS caliper mounting flanges. On previous brakes the actual brake pad material had been separating from their metal backing plates after maybe 4 years due to corrosion, so I was very pleased to test the new brake pads and find the pad material is bonded to what seems to be SS backing plates!! The kit however, did not comes with SS bolts to attach the caliper mounting flanges to the wheel bearing hub mounting flanges. Finding 1.25' long by 3/8" diameter SS bolts and SS nylock nuts was a time consuming nuisance so I suggest including them with the Kodiak kits. I have 12 trailers and tow a couple of boats including a 32' twin 300 hp boat rig between the Florida Keys and Chesapeake Bay seasonally and the conversion from surge brakes to electric over hydraulic using a progressive brake controller has been a MAJOR safety improvement.


Really expensive solution for my boat trailer that gets dunked in saltwater alot. Will see how well it holds up over time but everything fits and works well so far


Brakes seem heavy-duty & solid; they are cast with only some surfaces machined, so the product has a bit of a rough look, but I don't expect that to affect function


Retrofit on my ez loader trailer using these and ez loader oil hubs. Everything fit great and looks awesome. Went from intergel rotors to these. The customer support was great, ordered in between tornado warnings, they call right back.


Kodiak brakes are great. I paid for the high quality stainless steel brakes and wheel assemblies that were well worth it. It’s been a year of use and several road trips with salt water boat launches on the ramps. So far all is well with a end of year service to ensure a good next season. I use Timkin bearings as well.
Cheers to Kodiak for the build for the product and etrailer for the discounted price supply.
etrailer is a wealth of talent with good knowledge on the products I have purchased so far for my trailer renovations.
Thanks to them

Well after about a year on the the boat trailer all is well. It gets used on long and short trips and dunked in salt water. I’ve had it serviced to see how it looks inside and due to the fact that the Kodak hub is stainless steel there’s been no rust show up to destroy the bearings or damage the shaft spindle either. I’d recommend it to have a longer life system. BTW I have two braked axels that are all Kodiak brake and wheel components on them. In addition I chose to put electric over hydraulic on the trailer and I’m also happy with that too.
Jbuilt - 01/25/2021


You folks are great at Etrailer. Keep up the great work. Good products at fair products, with great service.


Greg S and ALL the etrailer staff is top-notch.
product is awesome, fitment is perfect...I really wish the kit would have come with twelve new stainless bolts and lock washers for the brackets but it didn’t.


I upgraded my trailer's totally rusted out (after only two years) brakes with this kit. It's now 8 years later and they still look and work like new.

If you use your trailer in salt water then these should be put on when new!


Very Happy and they were delivered fast!


Cathy helped me find the right brake parts for my trailer. She got it shipped to me on time and delivered when I needed it most, right before an out of town trip. She is extremely personable and is an awesome example of what customer service should be. I hope her boss reads this and gives her a nice big bonus !!!! She deserves it.


Very well made products.;4


A little more money than aftermarket but well worth the money




See what our Experts say about this Kodiak Trailer Brakes

  • Inexpensive Corrosion Resistant Disc Trailer Brakes for Salt Water Use and a Boat Trailer
    The best possible material for saltwater applications is going to be stainless steel but since cost is a factor stainless would not be the way you would want to go. The next best thing is going to be a brake kit with Dacromet finish like # K2R526D. The Dacromet has a 400 to 600 salt spray rating but it is always a good idea to spray them of with fresh water after use in salt water. This kit is designed to fit over idler hubs with a 6 on 5-1/2 bolt pattern and 15 inch or larger wheels...
    view full answer...
  • Will Kodiak Disc Brake Kit Replace UFP Brakes On 5,200 Lb Torsion Axle
    The correct Kodiak Disc Brake Kit for a 5,200 lb axle is part # K2R526S for stainless or part # K2R526D for dacroment. In regards to compatibility, the brake mounting flange and spindle size are the only factors we can confirm. I don't foresee any issues but test fitting would be the only way to confirm. There are no exclusions for torsion axle trailers in general.
    view full answer...
  • Can 7000 lb Disc Brakes be Used In Place of 6,000 lb Disc Brakes
    There would be a slight advantage to using 7,000 lb brakes in place of 6,000 lb brakes. The 7,000 lb brakes would not have tow work quite as hard reducing heat build up, but for the weight of your trailer, the 6,000 lb brakes should be able to handle the job well. The disadvantages that you listed are correct as well. When it comes to disc brakes, 7,000 lb brake assemblies will cost more than the 6,000 lb brakes and all of our 7,000 lb disc brake assemblies come with an 8 on 6-1/2 inch...
    view full answer...
    Image 1 for
  • Will Kodiak Stainless Steel Disc Brake Kit Fit on 2015 EZ Loader Trailer with UFP Brakes
    The Kodiak Disc Brake Kit # K2R526S will work find to replace the UFP kit you have on your trailer now. This kit is designed to fit the same standard brake mounting flange/hub dimensions as what your UFP kit has so this will fit and work great.
    view full answer...
  • Does Kodiak Disc Brake Kit Include Bearings Races And Seals
    The Kodiak Disc Brake Kit, part # K2R526S you are referencing does not come with the bearings, races, or seals. This is a stainless steel brake kit with a 12 inch rotor and a 6 on 5-1/2 bolt pattern. This is designed for 5,200 to 6,000 lb axles and 15 inch or larger wheels. Since the spindle on your axle can be different sizes we will need to know what bearings you currently have. The simplest way is to find the numbers on the bearing and seal. The number can normally be found stamped...
    view full answer...
    Image 1 for
  • Replacement Disc Brake Assemblies for Boat Trailer Used in Salt Water
    For a saltwater marine environment stainless steel brake components are the best possible option for durability and corrosion resistance. Although they will cost more up front they will last longer than any other type. Even with stainless, it is important to rinse off the brakes (and the rest of the trailer) after exposure to salt water. The link provided will take you to our main page for caliper and rotor kits. You can click on your trailer's axle weight rating to see the approriate...
    view full answer...
  • Does 12 Inch Kodiak Disc Brake Kit Require 5-Bolt Brake Mounting Flange
    The Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs # K2R526S does require a 5-bolt brake mounting flange to work. You mentioned you have all the other requirements but that one, so the best option to use these brakes is to get a new 5-bolt flange welded on. I looked through each of our assemblies and there are none with similar mounting that attach to a 4-bolt flange. I have added links to video reviews for you to check out as well.
    view full answer...
  • How to Determine Correct Disc Brakes for Trailer
    Where there are no specific fits for your trailer, there are disc brakes that can work. You didn't say if you were looking for slip-on or complete hub assemblies, but I can help you out. For slip on rotors, you just need to know your brake mounting flange and hub's wheel bolt pattern. For example, the Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs # K2R526S requires your axle have a 5-bolt brake mounting flange and a hub with a 6 on 5-1/2" wheel...
    view full answer...
  • Are Stainless Brake Rotors More Likely to Crack if Backed into Water
    If any rotor material got super hot and then immediately submerged underwater you run the risk of cracking them. Stainless isn't any more or less prone to this from our experiences. Normally by the time you get to the ramp and you've taken your time getting down it the brakes are cooled enough that this isn't an issue. But if your brakes were dragging for some reason on a long trip and you knew they were super hot I'd wait a while before backing trailer down. We have not had any issues...
    view full answer...
  • What are the Torque Specs for the Caliper Guide Bolts on the K2R526S Kodiak Disc Brake Kit
    According to the instructions for the Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs # K2R526S the torque spec for the caliper guide bolts is 45-50 foot pounds. I reached out to Kodiak for the mounting bolts and they said that with grade 5 3/8" bolts you need to use 30 foot pounds.
    view full answer...
  • Replacement Disc Brake Kits and Brake Parts for Ranger Boat Trailer
    We can help you with either new disc brakes or with replacement parts for your existing disc brake setup on your Ranger boat trailer. Either way you will want to confirm the axle rating of the single or tandem axles on the trailer since complete brakes and some brake parts are specific to a particular axle weight rating. The trailer's main sticker may have axle ratings indicated or sometimes on the axle beam itself there will be a plate or sticker with its specific weight capacity. If...
    view full answer...
  • Kodiak Disk Brake Kit Recommendations for Corrosion Resistance on an Aluminum Boat Trailer
    The dacromet and stainless combination of the Kodiak Brake Kit part # K2HR526DS would work very well to fight corrosion. For the ultimate in corrosion resistance that would be my recommendation for if your boat trailer will see saltwater I would recommend the entirely stainless kit Kodiak Disc Brake Kit part # K2R526S.
    view full answer...
  • Availability of 6-Lug Trailer Disc Brake Kits
    We do offer disc brake kits, both complete kits that include a coupler and also brake-only kits with a 6-bolt lug pattern like those shown on the linked page. These 6-lug kits fit 5200- and 6000-lb axles. You can choose from several finishes and these vary considerably in cost. A basic raw-finish kit costs less than a Dacromet-finish kit like # K2HR526D, which in turn costs far less than a stainless steel kit like # K2R526S. Please refer to the linked page to see all 6-lug kits. You can...
    view full answer...
  • Disc Brake Kit for 5,200 lb Axles
    There are disc brake kits for a 5,200 lb axle, and if you are only looking for an over-the-hub rotor of hub and rotor assembly. If you have a 6 on 5-1/2" bolt pattern and are only looking for an over-the-hub kit the correct part is the Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2" # K2R526S. For a hub-and-rotor assembly, so long as you have inner bearing 25580, outer bearing 15123 and grease seal RG06-070 you can use Kodiak Disc Brake Kit - 12" Hub/Rotor - 6 on 5-1/2" # K2HR526D. I...
    view full answer...
  • Diameter of Inner Bore on Rotors in Kodiak 6 on 5-1/2 Disc Brake Kit K2R526S
    An add-on rotor-only disc brake kit for a 6-on-5-1/2 bolt pattern trailer hub, such as kit # K2R526S which is rated for 5200-lb and 6000-lb axles, has a slip-on rotor with an inner diameter of 3.65-inches. I took this measurement on this kit's rotors using a precision digital caliper. You'll want to choose a rotor-only kit for the rating of your axle. This is usually found on the main sticker or plate on the axle beam itself; or the axle rating may be indicated on the trailer's main sticker...
    view full answer...
  • Items Needed to Convert Trailer to EOH Disc Brake Operation
    The 6K-rated disc brakes we have are shown on the linked page. All use the 6-on-5-1/2 bolt pattern and we have both rotor-only or hub-with-rotor type kits. You also have choices in the type of material/finish used for construction. We have higher-end full-stainless-steel kits like # K2R526S as well as more cost-effective e-coat kits. A great way to get into all this is by checking out the linked article that covers the whole process of adding EOH (electric-over-hydraulic) to a trailer....
    view full answer...
  • Does Kodiak Disc Brake Kit K2R526S Come With Brake Pads
    The Kodiak Disc Brake Kit # K2R526S does come with brake pads. When it is time to replace those brake pads, you will want part # K225CP. The disc brake kit will fit wheels 15 inches and up, with axles rated 5,200 to 6,000 pounds. The rotor will fit over 6 on 5-1/2 inch, standard idler hubs that are held in place by the wheel and then use lug nuts. As long as you have a standard hub, it is not necessary to replace your hub to use these disc brakes. If you are looking to replace your...
    view full answer...
  • Adding Disc Brakes to Tandem Axle Trailer
    We can help you with the project of adding hydraulic disc brakes to your 7K-rated tandem axle trailer. In fact we have a complete help article on the subject that I have linked for you. This includes links to products including disc kits, actuators and brake lines. So long as your existing brake lines are okay you should not need to replace them just to make the changeover to discs. If you are going to run the discs only on the one axle that has brake flanges you will want to match the...
    view full answer...
  • Can Kodiak Disc Brake Kit Replace TDE46247 Rotors
    Yes, the Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs # K2R526S can be used to replace your current TDE46247 rotors. From what I have found, the TDE46247 is a 12" rotor for a 6,000 lb axle and has a 6 on 5-1/2 bolt pattern. This matches the # K2R526S so you will be able to use these without a problem. I have attached a review video for your reference.
    view full answer...
  • The Location of the Electric Lockout Solenoid with Hydraulic Disc Brakes
    The Kodiak Disc Brake Kit, # K2R526S, do not have a lockout solenoid on them. The lockout solenoid mounts on the brake actuator and the normally open or normally closed function depends on the solenoid being used. For example, we offer the Titan Solenoid Valve, # T4748800, which is a normally open solenoid. This valve stays open, until it receives power (for backing up situations). The solenoid closes preventing pressure on the brake lines. At this time we do not offer a normally closed...
    view full answer...
  • Suitable Hydraulic Coupler for Kodiak Disc Brake Kit Part # K2R526S
    The Titan Brake Actuator with Electric Lock Out, part # T4745720 would work well with the Kodiak Disk Brake Kit you referenced. The actuator, which carries a 6000 lb capacity, features an adjustable coupler which accommodates 1-7/8, 2 inch and 50mm trailer balls. The included electric reverse lock out solenoid is protected from damage by an included cover.
    view full answer...
  • Parts Needed to Add Disc Brakes to Lippert 6k Axles
    Since we know you have 6k Lippert axles I will be able to help you pick out exactly the disc brake kits that will fit. The Kodiak kit part # K2HR526D will fit your trailer axles and will work well. This is a Dacromet coated kit that will do a great job resisting rust. If your trailer has hydraulic drum brakes currently the brake lines you currently have will fit and work well with either kit. If not for a brake kit that is 18 feet in length we have the part # 18TA-BLKIT. I attached a...
    view full answer...
  • Brake Flange Required to Mount Kodiak Disc Brake Kit K2R526DS
    For replacement brake mounting flanges to allow installation of the Kodiak Disc Brake Kit # K2R526DS you can use the matching 5-bolt flange part # 4-44-1. Welding on a new brake flange requires a specialized jig and excellent welding skills to ensure the flange is straight and concentric with the spindle. This is usually best left to a professional.
    view full answer...
  • Warranty Information for Kodiak Rotor/Hubs that Need to Be Replaced
    I went ahead and confirmed with Kodiak that if you have a e-coat/dacromet model of rotors like the # KHR10D, these are covered against defects in materials or workmanship for a period of 3 years from the date of purchase. If, however, you have stainless steel rotors like the ones in the # K2R526S, those are covered defects in materials or workmanship for a period of 6 years from the date of purchase.
    view full answer...

< Previous

Do you have a question about this Trailer Brake?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer brake information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jacob T
Video Edited:
Jacob T
Employee Alan C
Video by:
Alan C
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Mike S
Updated by:
Mike S

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.