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  1. Trailer Brakes
  2. Kodiak
  3. Disc Brakes
  4. 8000 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 - 13" Rotor - 8 on 6-1/2 - Dacromet - 9/16" Bolts - 8K Dexter Axle
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Kodiak

Kodiak Disc Brake Kit - 13" Rotor - 8 on 6-1/2 - Dacromet - 9/16" Bolts - 8K Dexter Axle

Part Number: K2R89DD
In Stock
$719.54
Trailer Brakes
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Dacromet-plated rotors, calipers and mounting brackets are included with this 2-wheel-assembly disc brake kit. Designed for 8,000-lb Dexter axles and 16" and larger wheels. Requires 9/16" wheel bolts. Great Prices for the best trailer brakes from Kodiak. Kodiak Disc Brake Kit - 13" Rotor - 8 on 6-1/2 - Dacromet - 9/16" Bolts - 8K Dexter Axle part number K2R89DD can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (172)
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Kodiak Trailer Brakes - K2R89DD

Highlights

  • Stops Smooth and Strong: Disc brakes deliver consistent braking and shorter stopping distance, even at highway speeds.
  • Built to Resist Corrosion: Dacromet-plated rotors, calipers, and brackets stand up to freshwater or saltwater use with a 300- to 400-hour salt-spray rating.
  • Bolts Right On: Slip-on, over-the-hub rotors fit over standard idler hubs and remove easily for maintenance.
  • Runs Cooler Under Load: Vented rotor design dissipates heat to help prevent heat-related damage.
  • Delivers More Braking Torque: Cast iron calipers with 2-1/4" stainless piston provide stronger, smoother braking.
  • Rated for Heavy Axles: Fits 8,000-lb Dexter axles with 16" and larger wheels, 8 on 6-1/2" bolt pattern, and 9/16" wheel bolts.

Features to know about

Stronger, Smoother Stops on Every Tow: 13" Disc Brakes for 8,000-lb Axles

If you’re ready to move beyond the inconsistent feel of drum brakes, this Kodiak 13" disc brake kit is a solid upgrade. Built for 8,000-lb Dexter axles with 16" and larger wheels, the cast iron rotors and calipers deliver more braking torque for shorter stopping distances and smoother control. With only one moving part in each caliper, maintenance stays simple and performance stays consistent even at highway speeds.

Corrosion Resistance You Can Count On: Dacromet-Plated Components

Rust and saltwater can wreck a brake system fast. This kit uses Dacromet-plated cast iron rotors, calipers, and brackets rated for 300- to 400-hour salt spray protection. It’s designed to hold up in freshwater or saltwater environments without giving up braking power. The durable finish keeps parts looking clean and working right season after season.

Cools Fast and Runs True: Vented Over-the-Hub Rotor Design

Heavy towing builds heat quickly, but these vented rotors dissipate it efficiently to prevent fade and protect components. The slip-on, over-the-hub design fits over standard idler hubs and is held in place by the wheel bolts—no need to replace the whole assembly if only the rotor gets damaged. It’s a design that makes maintenance easier and helps the brakes stay cool under load.

Built Tough Where It Counts: Cast Iron Calipers and Ductile Iron Brackets

Kodiak’s cast iron calipers resist flexing to give even pressure across the ceramic pads for reliable, smooth braking. The stainless steel piston is 2-1/4" in diameter—about 30 percent larger than many brands—adding extra braking torque when you need it most. Heavy-duty ductile iron mounting brackets use a side-support design so the load sits on the bracket instead of the bolts, giving you a tight, secure fit that lasts.

DIY-Ready Upgrade: Complete Two-Wheel Kit with Bolt-On Fit

Everything needed for one axle is included—two Dacromet rotors, two calipers, two mounting brackets, and stainless mounting bolts. The 4-bolt flange configuration bolts right up once your weld-on flange is in place. Add a hydraulic actuator rated at least 1,500 psi and lines (sold separately), and you’ve got a dependable disc setup that installs cleanly without complicated adjustments.

Specs

Weight and Capacity

  • Axle capacity: 8,000 lbs

Compatibility

  • Fits: #42 Spindle Axle type: Dexter
  • Wheel size: 16" and larger
  • Bolt pattern: 8 on 6-1/2"
  • Wheel bolt diameter: 9/16"

Dimensions

  • Rotor diameter: 13"

Mounting Configuration

  • Brake flange configuration: 4 bolt

Warranty

  • Warranty length: 3-Year warranty

2/R-133-8D-9-DDD-K Kodiak Disc Brakes - 2 Wheel Set - Rotor Only - Dacromet Finish - 9/16" Wheel Bolts - 8,000 lbs - Dexter Axle

Replaces K2R89DSC (2/RCM-133-8D-9-SCAD) and 2/RCM-133-8D-9-DAC-K





Video of Kodiak Disc Brake Kit - 13" Rotor - 8 on 6-1/2 - Dacromet - 9/16" Bolts - 8K Dexter Axle
Video Thumbnail Video Player Dialog

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




Video Transcript for All You Need to Know About the Kodiak Disc Brakes

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 Satisfaction Score:

Ratings & Reviews

4.7

172 reviews
5 Stars
(146)
4 Stars
(19)
3 Stars
(1)
2 Stars
(1)
1 Star
(5)
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by:
Perfect fit , This is a high quality brake system all it takes to make it last for years is a quick fresh water rinse when you get home . (Which the previous owner did not do) etrailer has the best customer service there is bar none !
by:
Great Products, not cheaply constructed, really easy to install, following simple instructions. Replaced 10 by 2 inch drum brakes. Looks awesome.
by:
another successful project completed !!

PB blaster and Lubrimatic bearing marine lube (550 deg dropping point), highest on the market
by:
I used this kit to add surge brakes to my 5200#-axle boat trailer. I bought it a couple months ago and it did not have brakes but really should have. The parts are well made and installed easily once I acquired the bolts I needed that weren't included. The description and pictures are not 100% clear that the mounting bolts to put the brackets on the trailer brake flange are not included. I'm not sure why they don't come with the kit but I ended up getting some 1.25" x 3/8" SS bolts to mount them. While the hat-style rotors are nice from a price and ease of replacement perspective, if your lug bolts don't have extra length, you would be better off getting the integral hub and rotor version. Finding longer lug studs for my 20 year old trailer and removing the old ones was a PITA. Had I known, I would have spent the extra $ for the integrated hub/rotor set. The calipers have bleeding screws on both top and bottom so they can be mounted on either side of the trailer. That's a nice feature as its one less thing to go wrong.
Once installed with new actuator coupler and brake lines, the brakes made a huge difference in towing the boat. The boat alone is 3000# and the trailer and gear probably add another 750 or so. It used to push my Yukon XL around when braking but now it tows smooth and easy.
etrailers was awesome to work with. Good communication via email and simple fast ordering and shipping. I will definitely use them for future trailers get needs.
Steve D. profile picture

Steve D.

8/8/2017

The brakes have been troublefree and make a huge improvement in highway and mountain driving

by:
I have a 2011 Lund impact 1775 on a Shorelander single axle trailer which tips the scale around 2500# dry. I felt that surge brakes would be a smart investment and take some pressure off my Ford F150 to help stop that beast. I researched kits, actuators, calipers and rotors and decided on the Kodiak caliper and rotor kit and the Titan actuator. eTrailer had both in stock, a convenient hose kit to boot and fair price so I purchased the lot from them. Delivery was very quick and all of the hardware arrived together and in good shape. It took me one afternoon to assemble the actuator on my swing \-away tongue and another to install the calipers and rotors. There was one snag with the hose kit, in that one of the hoses was incorrect. I contacted Bryan at eTrailer and he was very accommodating; rushing the correct hose to me and then following up by phone when I received it. It took about two hours to finish the installation and I couldn't be more pleased, both with the quality of the products and the first-rate service! I have yet to bleed the system and take it out for a run but I don't anticipate any issues. I fully recommend eTrailer, their products and service!
Jeff O. profile picture

Jeff O.

1/21/2019

I want to thank you again for your assistance in getting me the correct parts for my trailer brake installation. I took three major road trips with the boat last year and the trailer brakes worked flawlessly. The major reasons I installed the braking system were: the overall weight of the boat and trailer in relationship to my pickup 2006 F150 and braking performancesafety on wetslick roads. Both of these concerns were tested last year with wonderful results. I have been telling my friends, with similar trailer packages, to investigate your product. Thanks again,

by:
Nice quality caliper/Disc set.

Hard to find a setup that has rotors without the Hub and Disc as a one piece unit.

This Kodiak has a few configuration options for a separate Disc Rotor.

Only one problem is that the shipping container had no packing for the protection of the components.

The brake caliper hose fittings had broken through the boxes and were exposed outside the packaging. The seal plugs had fallen out of the brass caliper connections.

This is a less than acceptable and desirable way to protect the units.
Hank B. profile picture

Hank B.

5/16/2014

They are still excellent in performance and quality.

by:
Straight forward installation although wish the installation nuts & bolts to mount the caliper brackets would have been included in the kit. Especially like the greater piston size and fact that they pull back after braking so the pads are not dragging on rotor when not braking.
Vastly improved braking and stopping distance over the old electric brakes.
Albert profile picture

Albert

4/6/2020

Been a year, brakes are so responsive and work so much better will never rely on the old way further. Still working great, never any problem and have never experienced any fade. Switch now and enjoy the added safety.

by:
Kit is good quality but does not coming with mounting bolts for the brackets and nowhere does it say that it needs to be purchased.
Lazer S. profile picture
Etrailer Expert

Lazer S.

9/25/2026

Sorry about that. I will see if I can get that added to the page to make it clear. Typically the bolts from the previous brakes are used to install the brackets, but it should be made clear that they aren't included with the new parts. What kind of trailer did you install these on?

by:
Finished drum to disc brake conversion on my 1993 year model Bass Cat trailer. Installation went smoothly and the UFP-A60 Actuator replaced the obsolete Atwood Actuator. Shortened the outer member a bit and added a 1" flat bar to the bottom for welding of 4" channel trailer frame.
Tommy profile picture

Tommy

7/2/2023

Disc brake installation went smooth and easy. It would have been better to have the adapter plate mounting hardware. One think to note about these Kodiak disc brakes, the bleeder valve is a two part valve. Be sure to open the 516 hex bleeder screw and not the 38 screw in bushingseat.

by:
The brakes fit my 2006 Ranger boat trailer, w 15 in tires, I like this style of brake for one reason, the disc just fits over the hub and there is no messing with bearing and getting greasy.
Chris K. profile picture

Chris K.

3/19/2016

they work great, i put them in my 06 Range boat trailer and know i have breaks once again.

by:
Last year, I had to rebuild my Myco triple axel trailer that sits under my 47' Fountain. Needed all new hubs, bearings, brakes, etc. Bought everything from etrailer.com for a 1/3rd of the price that Myco wanted to charge me. Everything was perfect and their customer service was excellent when I had questions. Had some parts that got damaged in transit, but they shipped replacements immediately with no questions asked. The Dacromet brake kits have held up well a year later despite being used in salt water about a dozen times. Very happy with this product.
by:
nice product good pricing ,quick shipping, only problem is the condition of the 2 boxes.
by:
I just replaced the brakes on my trailer with this, Kodiak Disc Brake Kit in Dacromet. It replaces the same kit but in plain black E-coat finish. The only reason was a few years ago I lost a hub and left 1 disc covered in grease and when I replaced the hubs on that axle (on the side of the road) I disconnected the brake system to simplify things. It's sat for the last 2-3 years for the most part so instead of cleaning up the others and just replacing discs, a bracket, pads etc. and having to clean the calipers good, I decided it was wiser to start from scratch for not much more cost. I'm glad I did. I feel better with a new brake system, the Dacromet finish should do very well (although the E-coat didn't show any issues). The kit was easy to install and get going and works great.

Not that it's important, and wasn't the reason, but it looks good too. I also replaced all wheels and tires with A21514RTM45SM and when I got back from the first road test, I was pleasantly surprised about how good the wheels and brakes looked as I inspected everything. Having the light color finish made it much easier to see when working under the trailer where it's darker also. Just a bonus! And once again, eTrailer couldn't be beat for cost and quick delivery!
by:
Paired this set of brakes with a HydraStar electric over hydraulic actuator for a cargo trailer that did not have brakes. Very satisfied with the quality look and performance so far. This set up will lesson the load on my truck/camper and allow for a more relaxed ride knowing I have additional stopping power. The instructions & available online information at Etrailer made it pretty simple. I expect these to perform as intended for many years. Etrailer was a great choice for me.
by:
E trailers website provides enough info for me to find the exact product I need and the billing and shipping info is excellent. I will be going back for parts in the future!
Ralph profile picture

Ralph

10/8/2022

Excellent, completely satisfied!

by:
A couple of years after purchasing my boat I realized the the brake calipers on my boat trailer had seized. As a result the rotors were rusty and pitted. I selected this kit on etrailer because it had great reviews and was in the price range I had budgeted. The kit was easy to install and had great instructions. Towing my boat is actually a positive experience now that it has properly functioning brakes!
by:
Nice replacement for older Kodiak disc brakes. The quality looks like it's pretty good, but only time will tell since. The kit was simple to install if you already have similar style setup and axle mounting bracket.

This disc brake kit - Kodiak Disc Brake Kit - 10" Rotor - 5 on 4-1/2 - Dacromet - 3,500 lbs was used with the Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs
by:
Bought Kodiak full kit of rotors, calipers, and primary hydraulic actuator from eTrailer for my triple axle boat trailer and perfect result. Competitor was couple dollars cheaper, but couldn't answer simple product questions and squirrely about delivery details, and I don't have patience for that crap. Let's go eTrailer!
by:
Excellent experience all the way around! Fast shipping. Simple installation. Great instructions and videos. Reasonable prices. The best part though is the customer service. I ended up speaking to William B a couple times and he guided me thought ordering exactly the right thing. He had me confirm various measurements on my trailer to ensure I had the correct parts. Actually he helped me discover that the parts I was removing were incorrect so if we had of replaced like for like I would have had problems. Getting this right up front made the installation and final quality what it should be. Thank you eTrailer and thank you William!
by:
Customer I installed it for says that the brakes work way better than the old drum set up that came on the Rockwell axle.
Don profile picture

Don

7/28/2017

Slide pins fall out. Apply extra loctite when installing. Otherwise still working good.

by:
I am reviewing the components and etrailer as they are not installed yet. Online ordering was easy - I was contacted immediately with shipping time and tracking numbers - it all went really well. The components showed up on time and in good condition. The boxes were a little hammered but UPS does that. Thanks etrailer good service - good prices: what else do you want?
by:
Exactly what I bought and expected. Short ship time with two heavy boxes. Nice job!
by:
Perfect fit,and working great.
by:
may cost a little more but I have not had any problems and Drive from Birmingham Al to Panama city beach Fl. at least 6 times a year to put my sea hunt off shore boat in to fish (Salt water) No corrosive at all yet only one flat tire
Thank you for the great service
:)
by:
Great company! Everything was streamlined and processed very quickly with fast shipping. The website is among one of the best out there. Bought this Kodiak brake kit as a replacement for my boat trailer which had Tie Down parts and it fit perfect. Really helpful how to and review videos were available as well. I definitely recommend etrailer.com and am now a customer for life. Product delivered matched the description 100%.
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See what our Experts say about this Kodiak Trailer Brakes

  • Parts Needed To Convert Electric Drum Brakes To Disc Brakes
    Hey Robert, thanks for getting in touch. You are definitely on the right track with the part numbers you mentioned. The # HBA16 actuator and # 20TA-BLKIT brake line kit can be used. Instead of the # HBA16, you may want to get part # HS381-9067 instead. This comes with the same actuator, along with a full install kit. So you get a 7-way plug, junction box, breakaway with battery, and all of the necessary wire and connectors. Then use that with the # 20TA-BLKIT brake line kit. For the...
    view full answer...

Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jacob T
Video Edited:
Jacob T
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Mike S
Updated by:
Mike S

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