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Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs
(101 reviews)
Price: $1,445.15
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Kodiak Disc Brake Kit - 12" Rotor - 6 on 5-1/2 - Stainless Steel - 5,200 lbs to 6,000 lbs
Part Number: K2R526S
In Stock
$1,445.15
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Kodiak Trailer Brakes - K2R526S
Highlights
- Stop Smoother and Shorter: Disc brakes give more consistent braking and shorter stops, even at highway speeds.
- Built for Salt and Water: All-stainless rotors, calipers, and brackets resist rust for extended marine use.
- Quick Bolt-On Upgrade: Slip-on 12" rotors fit over standard idler hubs with 6 on 5-1/2" pattern—no hub swap needed.
- Run Cooler on Long Grades: Vented rotor design dissipates heat to prevent fade and damage.
- Stronger, Even Braking: 2-1/4" stainless piston and low-drag caliper deliver high torque and smooth braking.
- Rated for Heavy Loads: Supports 5,200-lb to 6,000-lb axles with 15" or larger wheels and 5-bolt flange mount.
Features to know about
Upgrade Old or Failing Brakes: Stainless Disc Kit for 5,200- to 6,000-lb Axles
If your trailer’s drum brakes are dragging or worn out, this Kodiak Disc Brake Kit makes the swap simple. The 12" slip-on rotors fit right over standard idler hubs with a 6 on 5-1/2" bolt pattern and are held in place by the wheel and bolts. With fewer moving parts than drum setups, these stainless disc assemblies deliver smoother, more consistent braking at highway speeds and require less maintenance over time.
Built for Harsh, Wet Conditions: Full Stainless Steel Construction
Saltwater and humidity can destroy unprotected metal fast. Every major piece in this kit—the rotors, calipers, and mounting brackets—is made of stainless steel for complete corrosion resistance. Each component carries a 1,000-hour salt-spray rating that holds up against repeated dunking and marine use. It’s an ideal setup for long-term durability around water.
Keeps Cool Under Load: Vented Rotors and Low-Drag Calipers
Heavy braking and mountain grades create heat that can fade stopping power. Kodiak’s vented rotor design dissipates heat efficiently to prevent damage, while the low-drag caliper retracts farther than standard models for cooler operation. The stainless piston measures 2-1/4" in diameter—about 30% larger than typical calipers—providing more braking torque and smoother stops under load.
Strong, Secure Mounting: Reinforced Brackets with Side-Support Design
The heavy-duty stainless mounting brackets use a side-support angle so the load bears on the bracket instead of the bolts. Extra embossing around the guide bolt threads increases contact area for a tighter hold. The kit is built for a standard 5-bolt brake flange configuration to ensure a solid, precise fit.
DIY-Ready Bolt-On Upgrade: Complete Axle Set with Key Hardware
This kit includes two full brake assemblies—each with a stainless rotor, caliper, mounting bracket, and caliper bolts—for a complete axle conversion. The slip-on design means you don’t replace the whole hub if only the rotor or hub is damaged. Just bolt it up, connect it to a hydraulic actuator rated for at least 1,500 psi (sold separately), and you’re ready to enjoy reliable disc braking performance season after season.
Specs
Weight and Capacity
- Axle capacity: 5,200 lbs - 6,000 lbs
Compatibility
- Fits: #42 Spindle
- Wheel size: 15" and larger
- Bolt pattern: 6 on 5-1/2"
- Brake flange configuration: 5 bolt
Dimensions
- Overall rotor diameter: 12"
Warranty
- Warranty: 6-Year warranty
K71-2R-12-SSS Kodiak Disc Brakes - 2 Wheel Set - Rotor Only - Stainless Steel - 5,200 lbs - 6,000 lbs
Replaces 2/RCM-12-SS-K and 2/R-12-SSS-K
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
- Arrived Damaged
Ratings & Reviews
4.7
101 reviews
by:
Ryan
01/08/2022
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.
by:
Derek W
05/23/2020
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.
by:
Tad
12/10/2022
If you want trouble free brakes in a marine environment this is the only way to go. I have them on another trailer of mine for 10 years and no issues. Quinn was great to work with doing a sanity check on my selection to make sure I was ordering the right parts. Half of the order got missing within the UPS system, not etrailer's fault but several people worked well with me to get me a replacement set of parts. Was able to get concerned and knowledgeable help on the phone quicky in the several call I made. Amazing, they all speak English!!! Everyone can be great to deal with when there are no hiccups. The real test is to see how people deal with adversity and etrailer was great.
by:
Doug
02/07/2026
I did not realize that the brakes are actually made by Dexter axel. The fit is great. The parts are great and they could not be more pleased.
by:
Ryan
04/08/2025
The kit I installed was a perfect match and upgrade to the original brakes I had. I did opt to replace the bracket bolts with stainless steel as well which weren’t included in the kit but were easily sourced from the local hardware store. My application called for 3/8 by 24 pitch bolts 1 inch long with 3/8 stainless lock washers. Maybe that information would be helpful for someone else. Be sure to get the 24 pitch. My sales representative Jacob K. Was knowledgeable about the product and went the extra step to help me locate one of my packages that didn’t arrive with the rest. I will definitely be using etrailer in the future.
by:
Robert J
07/09/2022
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.
Robert J.
7/10/2023
No signs of corrosion - good. Even though I am a tight wad, I just bought and installed a second set of Kodiak SS brakes on another trailer axle. The disc brake pad backing plates on this set are SS which is a big deal
by:
Jbuilt
01/24/2020
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
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
Jbuilt
1/25/2021
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.
by:
Captain Henry
07/26/2018
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!
If you use your trailer in salt water then these should be put on when new!
by:
Wayne
05/27/2018
2017
Ford
F-250 Super Duty
Greg S and ALL the etrailer staff is top-notch.
The 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.
The 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.
by:
Bobby
08/25/2023
Great product and outstanding customer service. Our trailer was down in the peak of our fishing season, and Paula was excellent at assisting us in getting this product overnighted. She checked the warehouse status to make sure we would get the product on time. It is so nice to receive that level of customer attention, thank you!!
by:
Kevin
11/09/2021
You folks are great at Etrailer. Keep up the great work. Good products at fair products, with great service.
by:
Wally C.
08/07/2017
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.
by:
Randal
09/10/2022
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.
by:
Michael
09/21/2022
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
by:
Chuck
10/06/2022
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
by:
Larry
04/17/2013
A little more money than aftermarket but well worth the money
by:
Luis
06/12/2021
Very well made products.;4
by:
David
01/25/2022
Very Happy and they were delivered fast!
by:
Philipp
02/06/2026
by:
Jim
09/20/2023
by:
Daniel
10/28/2024
by:
Michael
10/29/2023
by:
Craig
03/06/2021
by:
Robert
06/29/2023
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Victoria H.
4/11/2025
Thanks for the great feedback Ryan! Glad the kit was a perfect upgrade, and we appreciate you sharing the bolt specs, that is super helpful for others. I'll let Jacob know you gave him a shout out!