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  1. Trailer Brakes
  2. DeeMaxx
  3. Disc Brakes
  4. 7000 lbs Axle
  5. Hub and Rotor
  6. Marine Grade
DeeMaxx Disc Brakes - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coat/Stainless - 9/16" Bolts - 7K

DeeMaxx Disc Brakes - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coat/Stainless - 9/16" Bolts - 7K

Item # DE78YR
Our Price: $1,456.53
Trailer Brakes
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Replace your hubs with these rust-resistant hub-rotor assemblies to get safer, more consistent braking. Durable Maxx coating and stainless parts make this kit perfect for occasional salt exposure. Includes inner (25580) and outer (02475) bearings. Great Prices for the best trailer brakes from DeeMaxx. DeeMaxx Disc Brakes - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coat/Stainless - 9/16" Bolts - 7K part number DE78YR can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (6)
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  • Videos (4)
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DeeMaxx Trailer Brakes - DE78YR

  • Disc Brakes
  • 7000 lbs Axle
  • Hub and Rotor
  • Marine Grade
  • DeeMaxx
  • 8 on 6-1/2 Inch
  • 9/16 Inch Studs

Replace your hubs with these rust-resistant hub-rotor assemblies to get safer, more consistent braking. Durable Maxx coating and stainless parts make this kit perfect for occasional salt exposure. Includes inner (25580) and outer (02475) bearings.


  • Lets you upgrade your trailer from drum to disc brakes for superior performance
  • Excellent for occasional use in saltwater or areas with a lot of snow, slush, and road salt
    • Corrosion-resistant Maxx coat finish on hub-rotors and brackets has a salt spray rating over 1,000 hours
    • Stainless steel calipers are rustproof
    • Drainage holes in the hat section allow water to drain easily, further minimizing corrosion
  • Offers dramatically shorter stopping distances and smooth, controlled braking
    • Ceramic brake pads increase stopping power
    • Stainless steel piston provides fast, responsive braking
  • Requires minimal maintenance, saving you time and money
    • Laser-etched instructions on caliper take the guesswork out of installing and bleeding the brakes
    • 1-Piece hub-and-rotor assembly reduces the chance of uneven rotor wear
    • Vented design dissipates heat faster to prevent premature brake pad wear
    • High-quality, automotive-grade construction is long-lasting
  • Includes assemblies needed to upgrade brakes on 1 axle
    • 2 Integral hub-rotor assemblies come with bearings, races, grease seals, grease caps, wheel bolts, and lug nuts
    • Hydraulic brake actuator rated at 1,500 psi or above and brake lines (sold separately) are required to activate brakes


  • Axle capacity: 7,000 lbs
  • Bolt pattern: 8 on 6-1/2"
  • Rotor diameter: 13-1/8"
  • Piston diameter: 2-1/2"
  • Brake flange configuration: 5 bolt
  • Wheel bolt diameter: 9/16"
  • 7-Year warranty

Bearing, Race, and Seal Information:

  • Bearings
    • Inner bearing: 25580
    • Outer bearing: 02475
  • Races
    • Inner race: 25520
    • Outer race: 02420
  • Grease seal: GS-2250DL

Complete Kit Contents:

  • 2 Maxx coat, cast iron integral hub-rotor assemblies
  • 2 Stainless steel calipers
  • 2 Maxx coat mounting brackets
  • 2 Inner bearings
  • 2 Outer bearings
  • 2 Inner races
  • 2 Outer races
  • 2 Grease seals
  • 2 Zinc-coated grease caps
  • (16) 9/16" Wheel bolts
  • (16) 9/16" Zinc lug nuts

The DeeMaxx Difference

Close-up image of DeeMaxx disc brake installation

When brakes retain heat, they are more likely to experience brake fade, or loss of braking power. DeeMaxx addresses this problem by incorporating drainage holes in the hat section of each rotor to provide even more ventilation than other brands. Combining these holes with the conventional venting design allows DeeMaxx brakes to disperse heat faster. They're also able to shed moisture better, leading to less internal corrosion. The result is cooler-running, longer-lasting brakes that offer consistent performance.

DeeMaxx brakes are the only trailer brakes to satisfactorily pass the high standards of the SAE J2681 brake test. This test is designed to evaluate the friction performance of automotive brakes, so DeeMaxx's passing grade should tell you just how well made these products are.

Close-up image of DeeMaxx disc brake installation of brackets

The patented design of the caliper mounting bolt and sleeve makes installation easier while ensuring that the sleeves stay in place within the caliper. In addition, the side-support design of the caliper mounting bracket puts all of the weight on the bracket instead of on the bolts. This reduces premature wear and extends the life of the bolts, further ensuring optimal performance.

DeeMaxx brakes perform well even in the most demanding environments, which is one of the many reasons why they are preferred by law enforcement agencies like the Texas State Patrol, U.S. Border Patrol, and U.S. Coast Guard.

Perfect for Boat Trailers

If you live in a coastal area, or a climate with a lot of snow, slush, and road salt, these brakes are for you. The simple truth is that salt can be highly corrosive to metal when exposure lasts for an extended period of time. So, the more you tow around it, the more you need to protect your trailer from it.

disc brake with signs of heavy rust and corrosion

The Maxx coating on the rotors and brackets in this kit helps to ensure that DeeMaxx brakes don't end up looking like the one pictured above. It offers great corrosion protection, even with occasional use in saltwater. Rust-resistant coatings are graded according to a salt spray rating. Basically, this rating shows the amount of time it takes for a material to show signs of corrosion when exposed to pure, continuous salt spray. Zinc plating typically begins to deteriorate after about 100 hours. Dacromet usually lasts for around 300 to 400 hours. DeeMaxx's Maxx coating lasts for more than 1,000 hours in the salt spray test.

The environment this test creates is much harsher than anything you'll ever experience in your journeys, but it provides a testament to how well DeeMaxx brakes resist rust and corrosion.

This particular kit not only features the premier Maxx coating, but it also includes calipers made of stainless steel. And you can't get better than stainless when it comes to corrosion resistance. So if you sometimes launch your boat in saltwater, or if you live way up north where salted roads are the norm for a chunk of the year, you'll get the protection you need with this kit.

Get a Safer, More Comfortable Ride

Say goodbye to the days of your truck being pushed and pulled by your trailer. Disc brakes provide a safer, more comfortable ride than drum brakes. They offer shorter stopping distances and deliver consistent braking - even at highway speeds. So, you won't have to worry about things crashing around in your trailer or camper next time you reach unexpected traffic on the highway or debate if you can actually stop before that yellow light turns red.

Save Time and Money

More and more people are switching their trailers over to disc brakes. Not only do disc brakes provide more controlled braking than drum brakes, but they also save you money by having fewer parts to maintain.

side-by-side comparison of an electric drum brake and a hydraulic disc brake

Unlike drum brakes, which have springs, magnets, and shoes that may need to be continually adjusted or replaced, disc brakes are virtually maintenance-free. There are no springs, cables, or other little components that you'll need to worry about failing.

a stainless steel DeeMaxx disc brake caliper with the brake pads inserted

The brake pads will naturally wear down, so eventually you'll have to replace them. But these pads are also way easier to replace than drum brake shoes. And the caliper - where the pads are housed - is located on the outside of the brake assembly. This means you just have to remove that one part to replace the brake pads rather than having to remove the entire assembly like you would with drum brakes.

This particular kit can save you time and money over other disc brakes on the market as well. A slip-on rotor may be easier to install initially, but water can find its way between the rotor and your existing hub, causing uneven rotor wear or runout. With a 1-piece hub-and-rotor assembly, water and debris can't get in to cause any corrosion or contamination.

instructions on how to bleed brakes laser etched into the back of a DeeMaxx disc brake caliper

DeeMaxx also has simple instructions for bleeding the brakes laser-etched on the back of the calipers. This convenient time saver means you'll always have the guidance you need on hand when the time comes for maintenance.

Determining the Bolt Pattern

If you want to remount your existing wheels after installing these brakes, you'll need a kit that offers the same bolt pattern. To determine the bolt pattern, count the number of bolt holes (or lug nuts) on your trailer's wheel. This will give you the first number in the pattern. To find the second number, just measure the distance between a bolt hole and the bolt hole across from it.

diagram showing how to measure even bolt pattern

For example, on wheels with an even number of bolt holes: 6 on 5-1/2" means 6 bolt holes with 5-1/2" from the center of 1 hole to the center of the hole across from it.

diagram showing how to measure odd bolt pattern

And with an odd number of bolt holes: 5 on 4-1/2" means 5 bolt holes with 4-1/2" from the center of 1 hole to the farthest edge of one of the 2 farthest bolt holes.

DBI-7K-9-MAXX-SS Dee Maxx Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coating and Stainless Steel - 9/16" Bolts - 7,000 lbs

25580 and 02475 Inner and Outer Bearings

GS-2250DL Grease Seal

RTRHUB-131-8K-WN-916 Dee Maxx Trailer Wheel Lug Nut - Zinc Plated - 9/16"

DC-275L and DC-RP Easy Lube Dust Cap with Plug

Video of DeeMaxx Disc Brakes - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coat/Stainless - 9/16" Bolts - 7K

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

Video Transcript for DeeMaxx Disc Brake Kit Review

Hello neighbors, it's Brad here at etrailer, and today we're taking a look at the DeeMaxx line of disc brakes. Now these are gonna be available in a bunch of different configurations from axles rating from 3,500, all the way up to 16,000. It's also gonna be available in a number of different coatings as well as a number of different bolt patterns. So you're gonna be able to match your needs of your trailer with these disc brakes. Now today we have these installed on a fifth wheel camper with 7,000 pound axles, and this is a great application for any RV. But also you're gonna find these on horse trailers, utility trailers, and also marine trailers.

So that means that it's able to be used with a surge actuator as well as your electric over-hydraulic brake actuator. Now what's gonna sets these apart is definitely gonna be the rotor design. And you're gonna notice right away, we have these holes here on our hat of the rotor. And what makes that a little bit more unique than your typical one is not only is it gonna cool because that heat is gonna be able to kind of dissipate through those holes, but also it's really important for anyone that does any marine usage of their trailer, or even driving in inclement weather where water kind of gets caught in the backside of this. And the problem with other rotors is that water just kind of spins around, and as you park, it's gonna sit at the bottom, and if you park your trailer for a while that's gonna eat away at that rotor.

And this actually allows it, for it to drain out. Another great part about this is when they're able to put the coating on the rotor it gets nice and uniform, there's no drip marks. So again, you get a little bit more uniformity and overall better quality. Now speaking of that coating, depending on which DeeMaxx brace you go with they're gonna have a zinc coating. Here we have our Dacromet coating and also there's gonna be stainless steel.

Now what also sets these apart and really comes down to being heavy duty is gonna be a robust caliper design. It's 28% thicker than your standard calipers out there and it's gonna promote a little bit more even pad wear. It also prevents the caliper from splitting. So over time these can kind of get thin here, and when that cracks, well there goes your brakes. And many times with other brakes you are kind of left with only a few different ways to mount up where your caliper's gonna go.

And you can see there's plenty of holes available. You can really mount this in a number of different ways, so for clearance issues, that makes it nice and easy. You also have two bleed screws so you're able to bleed it from a number of different locations. So you are able to do that at 120 degrees, whereas normally when you're bleeding, you're stuck with 90 degrees, and that's just gonna kind of limit you and just make it a little bit more tricky as far as getting these installed. So here on our caliper you can see our two bleed screws here. What's really nice too is they've laser etched on the back here to let you know that you have both of these able to bleed. But also they give you the torque settings for when putting your caliper bolts in place. So that's really nice if you do take these off and you go, I forget the torque setting, no problem, it's on here. And that really just kind of goes to the quality of their products. They've really taken a lot of time to make sure that there's quality in every step of the way. And that even goes to your brass fitting here. It's quite a bit thicker than some of the other ones you've seen, and you're able to actually get a wrench on here if you have to rotate it and not really worry about cracking it. Some of your other brass fittings, you gotta be real careful 'cause that can snap. This one's definitely a little bit more robust Now depending on your application some of them will come standard with Kevlar brake pads. And your standard pads are gonna be great, but having Kevlar means that you're gonna have much longer life. And also the design of the brake pads is really nice too because you have these metal dowels here as well as a kind of unique clip here, and that just really makes sure that these aren't gonna be popping out anytime. So with that pressure against the rotor it really does just kind of keep this in place. You can see once we have this snapped in, those are gonna keep these nice and aligned. The internal seals on our brake piston are going to be EPD and rubber, which is definitely made for holding up to a lot of high temperatures as well as cold temperatures. And it is really great stuff. It's made in the U.S., and that's gonna really prolong the life of the piston and really the main moving mechanism of your brakes. So that means that your caliper you shouldn't have to replace for a long time. Now your dust boot here on your grease cap is gonna be made of silicone. This can be exposed to UV and it's not gonna break down over time, as we've seen some of the other rubbers that they use will start to get brittle and crack and then you have grease coming out of them. Now here we have an integrated hub and rotor one piece assembly, which is really nice. It's gonna keep any uneven wear on the rotor down to a minimum because you don't have that kind of moving around. It's all one piece, and that's just gonna keep it nice and solid. You do have the availability to also get it in just a standard rotor as well. Now when picking up your disc brakes, it does come in a quantity of two so you'll have enough for one axle. So if you have a tandem or triple axle you'll just need to order accordingly to make sure that you have them all. Now, as far as the other components that you'll need you are gonna need to pick up hydraulic line kit and also an actuator. And when choosing an actuator make sure you get one that's rated for 1,600 PSI minimum for these to operate. Now if you're wondering about the quality and just overall how they perform compared to those out out on the market, they've done third party independent testing and these, with flying colors, passed. They've also passed plenty of SAE tests that other brake manufacturers aren't actually required to do, and they're also contracted by the military for some of their vehicles to use them, so if that's not enough, we've also done a little bit of a test on our own with the electric drum brakes before and we're gonna do an after. So stick around and see how it performs. It's not exactly out on the highway testing, but what we've done is we've gotten up to about 15 miles per hour in our parking lot and just used the trailer brakes at full gain and allowed the drum brakes to do what they can to stop it. Now we've gone ahead and done the exact same breaking test, now just with our DeeMaxx brakes installed. Now for a quick visual reference, you can see our cone over here to my left and that's where the front of the truck was before with those drum breaks. You can kind of see where his truck is now, so obviously it's made a huge difference. We went from 117 foot down to 53, so more than half of what we had before. Imagine that being a car on the highway and you have to make a quick movement, instead of being there, you can be here. And that was a look at the line of DeeMaxx disc brakes.

Customer Reviews

DeeMaxx Disc Brakes - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coat/Stainless - 9/16" Bolts - 7K - DE78YR

Average Customer Rating:  4.2 out of 5 stars   (6 Customer Reviews)

Replace your hubs with these rust-resistant hub-rotor assemblies to get safer, more consistent braking. Durable Maxx coating and stainless parts make this kit perfect for occasional salt exposure. Includes inner (25580) and outer (02475) bearings.


Braking effect is much more pronounced that my previous disc brakes. Parts delivered quickly. Installed to replace Knott calipers which had been locking up frequently- these calipers and rotors show no signs of corrosion or loss of brake effect after a couple of uses in saltwater. I would highly recommend purchasing mounting hardware as these do not come with any- also note if you have tandem axels you need to have “T” line splitters as the brake line inlet is standard 3/16 (or 1/8 NPT if you remove the included 90° fitting)- the Y splitter that my previous calipers used through the lower bleed fitting were too big. Very satisfied so far; just need to see how they hold up over time.


So far, so good. The only downside is that new bolts are not supplied for mounting brackets. Box looked like it fell off a shelf a few times, but the components don't appear to be damaged at this time.


Very fast service and quality product





Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Installed by:
Michael B
Employee Bradley B
Installed by:
Bradley B
Employee Ryan F
Written by:
Ryan F

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