1. Trailer Brakes
  2. Hydrastar
  3. Disc Brakes
  4. 7000 lbs Axle
  5. Hub and Rotor
  6. 8 on 6-1/2
HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K

HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K

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Our Price: $2,395.49
Trailer Brakes
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HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K 7000 lbs Axle HSE7K-T1
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Kit includes everything you need to switch your trailer over to disc brakes for improved performance and greater stopping power. Dacromet-coated brakes are corrosion resistant. Perfect for use with boat trailers. Lowest Prices for the best trailer brakes from Hydrastar. HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K part number HSE7K-T1 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (10)
  • Q & A (37)
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  • Why etrailer?

Hydrastar Trailer Brakes

  • Disc Brakes
  • 7000 lbs Axle
  • Hub and Rotor
  • 8 on 6-1/2
  • Brake Kit with Actuator
  • 1/2 Inch Studs
  • Hydrastar

Kit includes everything you need to switch your trailer over to disc brakes for improved performance and greater stopping power. Dacromet-coated brakes are corrosion resistant. Perfect for use with boat trailers.


Features:

  • All-inclusive kit has everything you need to switch your trailer over to disc brakes
    • 4 Disc brake end kits
      • Hub-and-rotor assemblies
      • Grease seals, races and bearings
      • Grease caps (103314) available seperately
      • Calipers with mounting brackets and hardware - attach to 5-bolt brake flanges
    • HydraStar electric-over-hydraulic brake actuator
      • Hardwires into tow vehicle and signals in-cab brake controller when brakes are applied, triggering pump and motor on actuator
      • Creates smooth, even braking with fast response time
      • Works with most in-cab brake controllers (sold separately)
    • Line kit with brake lines and fittings for tandem-axle trailers
  • Disc brakes deliver better performance
    • Consistent stopping even at highway speeds
    • Shorter stopping distance than most drum brakes
  • Trailer coupler not included


Specs:

  • Axle capacity: 7,000 lbs
  • Bolt pattern: 8 on 6-1/2"
  • Rotor diameter: 13"
  • Wheel stud diameter: 1/2"


Bearings, Race, and Seal Information:

  • Bearings
    • Inner bearing 25580
    • Outer bearing: 14125A
  • Races
    • Inner race: 25520
    • Outer race: 14276
  • Seal: GS-2250DL
    • Inner diameter: 2.250"
    • Outer diameter: 3.376"

Complete Kit Includes:

  • HydraStar electric-over-hydraulic trailer brake actuator
  • 7K disc brake kit including hub-and-rotor assemblies with bearings, races, and seals
  • Hydraulic tandem-axle brake line kit
    • (1) 30' Long brake line with 3/8"-24 inverted flare nuts
    • (1) 6' Long brake line with 3/8"-24 inverted flare nuts
    • (2) 4-1/4' Long brake lines with 3/8"-24 inverted flare nuts
    • (4) 18" Male/male rubber flex lines
    • (1) 3/16" Brass T-fitting
    • (2) 3/16" Brass union fittings
    • (1) 3/16" Brass X-fitting
    • 1/2" Nylon hose clamps
    • 3/16" Nylon hose clamps
    • Self-tapping screws

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.


Integral Hub-and-Rotor Assemblies

The integral hub-and-rotor is made from cast iron, matching SAE specifications. Cast iron is ideal for high-temperature operations and offers a favorable friction coefficient to ensure adequate stopping power. Furthermore, machined disc brakes minimize the chance of contamination between the hub and rotor, resulting in excellent performance and long life.



E7K-T1 Hydra Star Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K

Item # HSE7K-T1






Customer Reviews

HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K - HSE7K-T1

Average Customer Rating:  4.7 out of 5 stars   (10 Customer Reviews)

Kit includes everything you need to switch your trailer over to disc brakes for improved performance and greater stopping power. Dacromet-coated brakes are corrosion resistant. Perfect for use with boat trailers.

- HSE7K-T1
by:

Using on 2 out of 3 axles on dump trailer. Two days of use at less then half power setting of brake controller, working great. I added pictures of the install. I do not have pictures of control box mounted. I mounted it inside tool box on trailer.


Comments
3 out of 4 calipers working great. One does not release right and eats up the pads fast and right into the rotor.
Dion H - 06/18/2021


- HSE7K-T1
by:

I purchased the disc brake system for my 5th wheel to improve the braking. It has proved to be a great unit. We have put over 10K miles on the camper since installing the brakes and I will NEVER have another camper without disc brakes. The system is easy to install. The brake lines took a little planning and I was able to mount the actuator in a convent location and it works great.



- HSE7K-T1
by:

These brakes work phenomenal. I would never rely on the original electric drum brakes that came on the trailer. It was a diy project and they sent everything I needed to complete the job. When the drum brakes need replacement I would definately go with this set. It stops so much better now and you can see the pads without having to disassemble the entire wheel.



- HSE7K-T1
by:

This brake system has worked out great. Stops are quicker and more solid than the electric brakes. I did have trouble with one of the calipers. No matter what I did it wouldn’t go on. Luckily, the company that makes them is 20 miles from my house. I took the defective caliper to them and they swapped it out and I had it installed all within an hour and half. They told me they had a bad batch and I had received one. I know I could have had etrailer replace it, but my trailer was up on jacks and didn’t want to wait for the replacement. It all worked out fine. Thanks



- HSE7K-T1
by:

One of the best upgrades we made to our 5th wheel camper.



- HSE7K-T1
by:

After pne year and approximately 6,000 miles I'm very pleased with the brakes' performance. My tow vehicle and trailer feel as one umit when braking. The stopping distance considerably less. I haven't once had to say to myself "please stop" in a hard braking situation.



- HSE7K-T1
by:

Great service great shipping but ordered rubber brake lines and they sent me steel lines



- HSE7K-T1
by:

Very happy with the product and service from etrailer



- HSE7K-T1
by:

Excellent Service, Paula was a great help! Recommended Highly



- HSE7K-T1
by:


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Ask the Experts about this Hydrastar Trailer Brakes

  • Oil Bath or Grease for HydraStar Disc Brake Kit with Actuator for Tandem Axle Trailers
    In regards to the bearings, trailer bearings nowadays are generally made overseas; there may be some exceptions here and there, but they generally aren't standard trailer bearings. The bearings and seals that come with the HydraStar Disc Brake Kit with Actuator for Tandem Axle Trailers # HSE7K-T1 are of the highest quality and you won't have any issues. As far as changing from grease to oil bath, that is not recommended for trailer hubs. Oil bath hubs can be problematic because they...
    view full answer...
  • Replacement Brake Pads for the HydraStar Disc Brake Kit
    You can use the Kodiak Ceramic Brake Pads, part # K250CP, as a replacement for the pads of the HydraStar Disc Brake Kit, part # HSE7K-T1.
    view full answer...
  • Will HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 Fit 7k Trailer Axle
    Yes the HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 does fit the 7k trailer axles you have on your trailer. The actuator is rated for 1,600 psi as well.
    view full answer...
  • 7000lb Axle Disc Brake Conversion
    To determine what disc brake conversion kit you should get you need to identify the inner and outer bearing numbers. Looks like on your 7,000 lb axle you have 25580 Inner bearing and 14125A outer bearings. You would want to get the HydraStar Disc Brake Kit w/ Actuator # HSE7K-T1 for your 2014 Grand Design 369RL. If you're looking to really boost your ride quality you can get the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks # RM-2470-2580. To complete your system, here...
    view full answer...
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  • Can HydraStar Disc Brake Kit w/ Actuator # HSE7K-T1 work with Existing Breakaway Kit
    The HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 is designed to work with a standard style breakaway kit like you have currently so it would work well with what you have. For more info on this kit check out the review video I attached as well.
    view full answer...
  • Full Suspension Upgrade For Lippert 7000 lb Axle On 2014 Grand Design 369RL
    It is good to hear that you are upgrading the suspension components that your 2014 Grand Design 369RL came with from the factory. Most of the time if not every time the stock components are very poor in quality resulting in giving a poor driving experience. For your leaf springs we have one that may work but you will need to make some measurements to make sure they will work with your MORrydem CRE3000 system. The 6-Leaf Double-Eye Spring # SP-198275 are for 7,000-lb Trailer Axles and are...
    view full answer...
  • Recommended Disc Brake Conversion Kit for Trailer with 7K Axles
    The HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers part # HSE7K-T1 is my recommendation for a disc brake conversion kit that will fit trailers with 7K axles. It's an all inclusive kit meaning it comes with everything you'll need to make the swap. It also has an integrated hub/rotor design which is easier to install and cuts down on the total number of parts.
    view full answer...
  • Does HydraStar Disc Brake Kit Work With Lippert 7,000 lb Axle
    Yes, your Lippert 7,000 lb axles are absolutely compatible with the HydraStar Disc Brake Kit with Actuator for Tandem Axle Trailers # HSE7K-T1. This kit is going to give you the best possible braking set up for your trailer, with the responsiveness of an electric trailer brake system and the stopping power of hydraulic disc brakes. I also recommend adding the Trailer Hub Grease Cap # 21-43-1 if you have an E-Z Lube type axle. Additionally, if you don't have one you'll need a brake...
    view full answer...
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  • Converting Trailer with Tandem 7k Dexter Axles to Electric Over Hydraulic Disc Brakes
    To convert your Dexter 7k torsion tandem axle trailer to disc and electric over hydraulic we actually have a kit that comes with everything. All you'd need is HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1. This comes with all of the components needed from the actuator, the lines, to the disc brake components.
    view full answer...
  • Do Hydraulic Trailer Brakes Release Sitting at Traffic Light
    The actuator of the HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 will maintain brake pressure as long as the brake controller is telling the actuator to maintain it, but what most brake controllers have, like the Prodigy P2 part # 90885, have is a function that after a certain amount of time with the brakes applied the controller stops sending voltage as it assumes you are at a stoplight. So while the actuator doesn't provide the function you mentioned the...
    view full answer...
  • HydraStar Disc Brake Kit with Actuator for 16 Inch Wheels
    The HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K # HSE7K-T1 will work well for your 16 inch wheels. The manufacturer doesn't specify wheel size compatibility so that is why it is missing in the cross-reference for fit. The 10 Inch rotors fit 13-15 inch wheels and the 13 inch rotors of this system fit 16 to 17-1/2 inch wheels. They are a great choice for your application.
    view full answer...
  • How do Hydrastar Disk Brake Actuator Kits Compare to Other Brands
    The Hydrastar electric over hydraulic actuators and disk brake components like the # HSE7K-T1 are the best in overall quality and performance. We've found that the Hydrastar systems are the fastest reacting and most reliable actuators so we recommend them very highly. The other brands tend to have more circuit board issues or won't like working with OEM brake controllers as much either. I attached a review video for this kit for more info on it as well.
    view full answer...
  • Electric Over Hydraulic Disc Brake Kit for 7K Trailer Axles
    The # HSE7K-T1 brake kit you referenced is designed to work with 7K axles, regardless of the suspension used. It'll work perfectly with your axles/suspension. The rotors included are compatible with a 25580 inner/14125A outer wheel bearing and a # GS-2250DL grease seal. The kit includes everything you need to switch your trailer over to disc brakes for improved performance and greater stopping power.
    view full answer...
  • Will HydraStar Disc Brake Kit Clear Trailer Frame
    The HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 should fit just fine with your 7K Dexter Axles. It does sit back slightly more than what a drum brake would but unless you have a really odd-shaped axle you won't have any problems. As you can see from the linked review video the calipers sit slightly back but there is still enough clearance for them. The flange that these mount on actually have a dip in them that helps to accommodate some of the thickness...
    view full answer...
  • Parts Needed To Convert from Electric to Disc Brakes On a Keystone Montana High Country 310RE
    The Keystone Montana High Country 310RE has 6,000 lb axles from what I was able to gather therefore for a complete electric over hydraulic disc brake kit you can use the HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers part # HSE7K-T1. You would however also need to add the Dust Cap for Kodiak Disc Brake Kit part # K7CAP.
    view full answer...
  • Caliper not Fitting Correctly on a HydraStar Disc Brake on a 2018 Jayco Pinnacle
    I called HydraStar on your behalf and they said the most likely problem with the caliper of the HydraStar Disc Brake, part # HSE7K-T1, not lining up correctly is because the piston needs to be reset into the caliper. I also spoke with one of our installation experts, and he believes this may be the problem as well. To reset the caliper, place a brake pad in the piston side and use a c-clamp like part # PTW5100 to seat it to push it in all of the way. If this doesn't solve your...
    view full answer...
  • Electric Over Hydraulic Oil Bath Disc Brakes Compatible For Trailer With Lippert 7000lb Axles
    I have another option for you, but the HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K # HSE7K-T1 you were looking at foryour Lippert 7000lb axles requires grease and cannot be converted to oil bath. Instead I recommend the Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - Oil - 8 on 6-1/2 - E-Coat - 7,000 lbs # K71-694-695-13 which is already set up for oil bath, but you will need one kit per axle on your trailer. Moving on you will need...
    view full answer...
  • Best Parts to Install Disc Brake Kit on Fuzion Toy Hauler with 7k Trailer Axles
    For a trailer with tandem 7k axles like your Fuzion Toyhauler we have the HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 which comes with the best braking components and the best disc brake actuator as well as all of the brake lines needed to complete the install. It's a really convenient kit that covers everything needed for your trailer. I attached an install video for you to check out as well.
    view full answer...
  • Does HydraStar Disc Brake Kit Tandem Axle Trailers Fit 2017 Heartland Torque Toy Hauler 345JM
    I did some checking and your 2017 Heartland Torque 345JM has tandem 7k axles which means the HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 that you referenced is a confirmed fit and would work great. It comes with everything you'd need to convert your trailer to an electric over hydrualic disc brake setup.
    view full answer...
  • Disc Brake Upgrade Kit For 2021 Vanleigh Vilano 5TH Wheel Camper With 7,000LB Axles
    It appears that the HydraStar Disc Brake Kit # HSE7K-T1 is the correct kit for your 2021 Vanleigh Vilano 320GK. To verify this you can find the axle serial numbers and send that information to me so I can verify all the components are correct. Otherwise you can disassemble one of your hubs to verify your spindle measurements. This kit uses Inner bearing # 25580 (inner diameter 1.750") Outer bearing # 14125A (inner diameter 1.250) Grease Seal # GS-2250DL (inner diameter 2.250") Wheel...
    view full answer...
    Image 1 for
  • Disc Brake Upgrade Kit for 7,000 lb Trailer Axles to Convert to Electric Over Hydraulic
    We have Timbren and Dexter 7k axles. But I am not totally sure you are looking for just an axle. Maybe a disc brake kit? For an electric over hydraulic disc brake kit for a trailer with tandem 7k axles the best option is the HydraStar kit part # HSE7K-T1 which comes with everything needed to convert the tandem axles to an electric over hydraulic setup using the best actuator and disc brake components.
    view full answer...
  • Is Integrated Brake Controller of 2016 Ram 2500 Compatible with Hydrastar Actuator
    The integrated brake controller of a 2016 Ram 3500 is compatible with the Hydrastar brake actuators like what comes with the kit part # HSE7K-T1 that you referenced.
    view full answer...
  • Kit for Converting 2018 Cedar Creek 34RL2 to Disc Brakes
    Since we know your 2018 Cedar Creek 34RL2 has 7k trailer axles the HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 for sure does fit and would work great. The HydraStar actuators are by far the best option too so this would be a really great and easy all-in-one solution.
    view full answer...
  • Best Parts to Convert a Trailer with 7k Drum Electric Brakes to Electric Over Hydraulic Disc Brakes
    We have a really great kit for converting a trailer with electric brakes to electric over disc brakes with the Hydrastar # HSE7K-T1. This comes with the best components for converting your trailer to electric over hydraulic disc brakes. I also attached a link to a page on converting a trailer to this style of brakes for you to check out as well.
    view full answer...
  • Recommended Disc Brake Kit for Tandem Axle Heartland Big Horn 5th Wheel Trailer
    The HydraStar Disc Brake Kit part # HSE7K-T1 is my strong recommendation for a disc brake kit for a Heartland Big Horn 5th Wheel. It comes with everything needed for the swap in one convenient package. It also has an integrated hub and rotor design which takes the hassle out of trying to find a compatibility hub to work with the rotors.
    view full answer...
  • Could HydraStar Disc Brake Kit Fit Featherlight Cattle Trailer
    As long as your Featherlight cattle trailer has 7,000 lb trailer axles yes the HydraStar Disc Brake Kit part # HSE7K-T1 will fit and work great. If you have a different axle capacity let me know and I'll help come up with a solution.
    view full answer...
  • Disc Brake Conversion Parts Needed for 2020 Coachmen Chapparal 360IBL
    For your 2020 Coachmen Chapparal 360IBL with Dexter 7k axles the kit you'd want to convert to an electric over hydraulic disc brake setup would just require the HydraStar part # HSE7K-T1. This comes with everything needed and would give you the best components needed for the job.
    view full answer...
  • Can Hydrastar Disc Brake Kit for 7k Axle Fit 7k Trailer Axle
    6k and 7k trailer axles are almost all the exact same so if you have a Dexter 6k axle the spindle of it would be compatible with the # HSE7K-T1 that you mentioned but you'd want to make sure the seal surface of the spindle is 2.250 inch and not 2.125 inch as that's sometimes an issue. But even then the worst case scenario is you'd just need to swap seals with part # GS-2125DL and you'd be set.
    view full answer...
  • Upgrading from an Electric Drum to a Disc EOH Braking System for a 2018 Jayco Eagle 321RSTS
    We do have the means for you to swap out the electric brakes currently on your 2018 Jayco Eagle 321RSTS, like part # AKEBRK-7-SA, so that you have a hydraulic system that is compatible with the electric brake controller on your 2016 Chevy Silverado 3500 Duramax. I recommend going with either the Dacromet # K2HR526D or Dacromet and Stainless # K2HR526DS Kodiak Disc Brake Kit (1 set per axle), which both have a 6 on 5-1/2" bolt patter, and then the HydraStar Electric Over Hydraulic Actuator...
    view full answer...
    Image 1 for
  • Can I Upgrade from 6,000 lbs Axles to 8,000 lbs Axles on 5th Wheel Toy Hauler?
    As someone who has knowingly overloaded a trailer out of necessity, I completely understand your thought process here, but I think I have a better option for you that will save you both time and money in upgrading to electric-over-hydraulic discs brakes on your existing 6K axles. I wouldn't install 8K axles for two reasons, suspension stiffness and drum size. The suspension on an 8K axle will be significantly stiffer than a 6K axle and this will create more jarring and a rougher ride...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Kathleen M
Installed by:
Kathleen M
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee David F
Test Fit:
David F
Employee Kristina F
Written by:
Kristina F
Employee Noah M
Updated by:
Noah M

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