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Kodiak Disc Brake Kit - 10" Rotor - 5 on 4-1/2 - Stainless Steel - 3,500 lbs
(101 reviews)
Price: $1,199.61
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Kodiak Disc Brake Kit - 10" Rotor - 5 on 4-1/2 - Stainless Steel - 3,500 lbs
Part Number: K2R35S
In Stock
$1,199.61
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- All Info
- Reviews (101)
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Kodiak Trailer Brakes - K2R35S
Highlights
- Stops Smooth and Strong: Stainless steel 10" disc brakes give more torque and shorter stops than drums.
- Fights Saltwater Corrosion: 304 stainless rotors, calipers, and brackets are rustproof for marine use.
- Bolts Right On: Slip-on rotors fit over standard idler hubs—no need to replace the whole hub assembly.
- Runs Cooler on Long Grades: Vented rotors and low-drag calipers cut heat buildup for consistent braking.
- Stays Secure Under Load: Heavy-duty brackets with side support and extra thread contact hold tight.
- Rated for 3,500-lb Axles: Works with 14" and larger wheels using a 5 on 4-1/2" bolt pattern.
Features to know about
Upgrade from Rusted or Weak Drums: Stainless Slip-On Disc Kit Improves Braking and Control
If you’re tired of dealing with rusted drum brakes or weak stopping power, this Kodiak kit is a big step up. The stainless steel rotors, calipers, and brackets deliver smooth, even braking with dramatically shorter stopping distance than drums. Each 10" rotor slips over your idler hub and is held in place by your wheel bolts, so there’s no need to replace the whole hub-and-rotor assembly. It fits 3,500-lb axles with 14" or larger wheels and a 5 on 4-1/2" bolt pattern, giving you reliable braking even at highway speeds.
Built to Handle Saltwater: 304 Stainless Steel Construction with 1,000-Hour Salt-Spray Rating
Saltwater and corrosion are the downfall of most trailer brakes. This kit solves that with rustproof 304 stainless steel rotors, calipers, and mounting brackets. Every component is designed for extended marine use and rated for 1,000 hours of salt-spray exposure. After a season of saltwater launches, users noted that the parts still looked almost new. Stainless pistons and hardware mean you can rinse and go without worrying about corrosion damage.
Cooler Running and Stronger Braking: Vented Rotors and Low-Drag Calipers
Heat buildup can lead to fade and warped rotors. The vented rotor design moves air efficiently through the core to prevent heat-related damage, while the low-drag caliper design retracts the piston farther for cooler operation. The stainless piston measures 2-1/4" in diameter—about 30 percent larger than typical models—producing more braking torque for better control under load.
DIY-Friendly Conversion: Bolt-On Brackets and Over-the-Hub Rotors
Swapping your old setup is straightforward thanks to Kodiak’s bolt-on design. The slip-on rotors fit right over standard idler hubs, and the stainless steel caliper brackets mount to a standard 4-bolt brake flange. You can remove individual parts for maintenance instead of replacing the entire assembly. Each kit includes two rotors, two calipers, two mounting brackets, and mounting bolts—everything needed to upgrade one axle.
Smooth, Consistent Braking Every Time: Self-Adjusting Stainless Calipers
These self-adjusting calipers keep pad pressure balanced on both sides for smooth, equal braking without manual adjustment. The rigid stainless body doesn’t flex like aluminum, so every press of the brake feels solid and consistent. Fewer moving parts mean less maintenance over time and more dependable performance mile after mile.
Specs
Compatibility
- Fits: Axle capacity: 3,500 lbs #84 Spindle
- Wheel size: 14" and larger
- Bolt pattern: 5 on 4-1/2"
- Brake flange configuration: 4 bolt
Dimensions
- Overall rotor diameter: 10-7/8"
Warranty
- Warranty: 6-Year warranty
K71-2R-10-SSS Kodiak Disc Brakes - 2 Wheel Set - Rotor Only - Stainless Steel - 3,500 lbs
Replaces 2/RCM-10-SS-K and 2/R-10-SSS-K
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
- Wrong item was ordered
- Defective
Ratings & Reviews
4.7
101 reviews
by:
Todd
12/03/2025
HUGE improvement over the stock drum brakes on my 2013 EZ Loader boat trailer which had completely rusted out. With launching exclusively in saltwater the stainless steel disc's are far superior and much easier to rinse/wash clean. They look almost new after a full year of use. Rather easy install after removing the hub assembly and cleaning up the spindles.
by:
Paul
10/07/2026
Now my wheels don’t drag!! They bolted right on very easily and they don’t seize like my old disk brakes! Now they just work. No longer any question whether my trailer will move when I come back to it in the spring. Money well spent!
by:
Michael
08/30/2023
I know they were costly because I went the extra step and also installed stainless hubs and lugnuts but going with Kodiak stainless breakes was they way to go. They look and perform amazingly.
Michael
8/31/2024
Still working great and looking good.
by:
Gregory
03/27/2024
These brakes are excellent! And so is the service/technical support provided by George J of etrailer and others. This was the first time I ever replaced trailer brakes and I also bled the brake system for the first time. Everything went very smooth. I live in Florida and all of use of the trailer is in salt water. The brakes have held up very well.
Gregory
3/28/2025
These Kodiak SS brakes are working fabulous. The boat trailer they are installed on is used in salt water only and they still look like new and function like new.
Jesse M.
3/28/2025
@Gregory Awesome! Glad to hear the brakes are still holding up. It really is worth investing in stainless parts if you are boating in salt water. Feel free to come back anytime you need anything!
by:
Russel
05/03/2019
Just installed, which was very easy; everything fit nicely!
My only complaint concerns the bleed nipples, the neck is too short.
Having a heck of a time getting an air tight seal with the bleeder hose.
Will update after a few dips in the ocean; will see how well they hold up.
Semper Fi
My only complaint concerns the bleed nipples, the neck is too short.
Having a heck of a time getting an air tight seal with the bleeder hose.
Will update after a few dips in the ocean; will see how well they hold up.
Semper Fi
by:
Lee
03/07/2025
Yamaha
Kodiak
These Kodiak stainless brakes - FANTASTIC ! This older Northriver Seahawk trailer brakes work perfectly now ! Thank you guys ! ??
Gwendolyn Y.
3/10/2025
Hey Lee! I'm glad to hear everything is working so well! When do you get to launch your boat for the season?
by:
Doug
02/04/2025
Brakes went on easy, high quality. Installed stainless hubs also. Everything shipped and arrived quickly, in good shape.
by:
Time&Tide
02/02/2026
nice kit, as advertised
by:
Dwight
03/06/2024
It fit perfectly and was easy to install. Customer service was excellent.
Dwight
3/7/2025
working well
Jon G.
3/8/2025
@Dwight Thanks for the update!
by:
Tony S
08/09/2017
2005
Toyota
Tacoma
Used 2 sets on a boat trailer and went electric over hydraulic at the same time. Boat is trailering better then ever. Thinking of going with a similar setup on my toy hauler, I'm that happy with the set up. The install was easer then expected, other then needing to run hydraulic lines, it was as easy as a normal brake job on the trailer.
by:
William H
06/29/2020
Chevrolet
SS
Ordered Kodiac stainless steel disc brakes. Received timely, no hassels, no damge, good price. Although higher price for SS brakes, was tired of having brakes fail every 2-3 years, always on a trip. Comes with 5 year guarantee if I recall correctly. Excellent product. Perfect fit, easy assembly, good instructions. 1 year later no problems. Boat strictly salt water, although only out 4 times this year.
by:
David
02/25/2020
Bought and installed all Stainless Steel Disk Brake system on my boat trailer. Appear to still be working good. Will know more in another year.
by:
Gerald
02/21/2025
Victoria H.
2/21/2025
Hi Gerald, thanks for the photos! The install looks good. What are you hauling?
by:
Capt. Dwayne
05/17/2023
Great Prices and quick shipping. I Have not mounted to the trailer yet but As others have mentioned the bolts for the backing plates do not come with the kit. Since all is stainless I bought stainless nuts and bolts at a local hardware store.
Will try to update after I install them on the trailer.
Will try to update after I install them on the trailer.
by:
Frank D.
08/01/2016
This website is very informative and obviously designed and written by people who know their products. All my questions were answered by the click of a button thus allowing me to order parts that fit with no need for returns. The K2R35 kit was all stainless and made well, installed easily and worked perfect with all parts included. The best choice for saltwater use. Extremely pleased with purchase.
by:
Brian
05/24/2024
It was very easy to order online. The description of the product was very good, and I did not have any problems installing the disc Brakes on my boat trailer.
by:
Mark
06/17/2018
Chevrolet
SS
DOES NOT INCLUDE MOUNTING BOLTS. The 7/16 galvanized mounting bolts are NOT included. What a way to cheap out on a 700 dollar set of brakes. The brakes are good and come loaded with SS pads, but making me take a separate trip to the hardware store? That really sends the wrong message when you crack the box open on these.
by:
KlineK
08/02/2019
Best trailer brakes I've owned.
by:
Jack
08/28/2023
ALL WAS GOOD BUT THE CALIPER BRACKETS WERE THE MACHINED SURFACE FOR THE CALIPER TO SLIDE ON SHOULD BE SMOOTH AND THEY HAC DEEP GOUGES/GRIND MARKS IN THEM. HOPE THIS DOES NOT BECOME A PROBLEM.
by:
Julian
05/19/2020
Good quality parts, super simple to find the items and shipping was fast.
Very simple install once the old rust parts were removed and the stub axels cleaned up. Ready to make a hasty retreat now with hurricane season approaching.
Very simple install once the old rust parts were removed and the stub axels cleaned up. Ready to make a hasty retreat now with hurricane season approaching.
by:
Bert
07/24/2019
So far these are great. They work perfectly in a salt water environment on the Gulf of Mexico. I rinse them with the rest of the trailer after each use. They have now been in service for about a year and are not showing any rust at all.
by:
Jonathan
03/01/2020
i would like to say that my experience with etrailer has been a great one. everything
I ordered from them arrived as ordered and in a timely manner.
I ordered from them arrived as ordered and in a timely manner.
by:
Matthew
05/02/2023
I haven't installed the kit yet, but the service has been excellent. I saw it was backordered and called. I was told they expected more in in a few days, so I placed the order over the phone. Later that week I got an email that they were still backordered. A couple days later they shipped and now I have them. Good, honest communication though the ordering process.
by:
Robert
10/16/2022
Installed this on another boat trailer of mine 15 years ago still in operation
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101
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view full answer... - Solution for Trailer Brake Caliper that is Too Close to Leaf SpringYou could take the mounting bracket for the caliper and put it in the highest position or basically so that it would be on top of the rotor instead of to the side of it. This would get it out of the way.
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- Correct Torque Specs for Lug Nuts with 10" Kodiak Disc Brake Kit InstalledThere are a few variables that go into determining the proper torque setting for the lugs nuts once you install your wheel over the Kodiak Disc Brake Kit # K2R35S and it can range from 75 ft-lbs up to 120 ft-lbs depending on your wheel size and the material of the wheel. I am attaching a photo that breaks down the different torque specs that you can reference for your installation. I have also attached a sample installation video to this page for you to check out.
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- Stainless Steel Kodiak Disc Brakes for 3,500 Pound # 84 SpindleA #84 spindle, like # TRU24FR , is a spindle for a 3,500 pound axle that has inner bearing # L68149 and outer bearing # L44649. The bearing kit that fits is # BK2-100. To replace your brakes and hubs you'll need the Kodiak Stainless Steel Brake Kit # K2R35S with hubs # KH84545S. You'll also need the bearing kit # BK2-100 that I mentioned earlier.
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Kate F.
12/3/2025
Glad you make the switch to disc brakes Todd, and went for the stainless especially since you are launching into salt water. What body of water are you mainly going out in? We are located in Missouri so I am out on the Lake of the Ozarks and Mark Twain Lake when I can. I dabble in some local bass tournaments as well.