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 Triple Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K

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

Item # HSE7K-TR1
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Our Price: $2,350.04
Trailer Brakes
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Shipping Weight: 397 lbs
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In Use/Installed

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 Triple Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K part number HSE7K-TR1 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Hydrastar Trailer Brakes - HSE7K-TR1

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

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
    • 6 Disc brake end kits
      • Hub-and-rotor assemblies
      • Grease seals, caps, races and bearings
      • 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 triple-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"
  • 3-Year warranty


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 triple-axle brake line kit
    • (1) 30' Long brake line - 3/16"
    • (1) 6' Long brake line - 3/16"
    • (6) 4-1/4" Long brake lines - 3/16"
    • (6) 18" Male/male rubber flex lines
    • (3) 3/16" Brass T-fitting
    • (2) 3/16" Brass union fitting
    • (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-TR1 Hydra Star Disc Brake Kit w/ Actuator for Triple Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K





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Ask the Experts about this Hydrastar Trailer Brakes

  • Parts Needed to Convert Electric Brakes to EOH System on Triple 7K Axle Toy Hauler
    We do have a complete kit to convert your triple 7K axle trailer to an EOH setup! I recommend using the HydraStar Disc Brake Kit w/ Actuator # HSE7K-TR1 which come with the EOH actuator, disc brake hub/rotors, and the brake line parts needed for all 3 axles. The only other parts you'll need are a junction box like # e99011 and a breakaway kit like # 50-85-315 (but you should have both of these since you currently have electric brakes). The junction box gives you a 7-Way connector on your...
    view full answer...
  • Bearing Buddy For The 13" HydraStar Disc Brake Kit Hub/Rotor - 8 on 6-1/2 For 7000 LB Axles
    The correct bearing buddy for the HydraStar Disc Brake Kit w/ Actuator for Triple Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K Item # HSE7K-TR1 is going to be Bearing Buddy Bearing Protectors - Model 2717SS - Stainless Steel (Pair) Item # BB2717SS.
    view full answer...
  • Is Hardware for Mounting Brake Lines to Trailer Included with HydraStar Disc Brake Kit # HSE7K-TR1
    The HydraStar Disc Brake Kit w/ Actuator # HSE7K-TR1 does include the necessary hardware to attach the brake lines to the trailer, however they do not utilize c-clamp style rubber lines so these clamps are not in the kit. In addition to this hardware, the HydraStar electric-over-hydraulic actuator, and the hub-and-rotor assemblies, this kit also includes the following components: (1) 30' Long brake line - 3/16" (1) 6' Long brake line - 3/16" (4) 4-1/4" Long brake lines - 3/16" (6)...
    view full answer...
  • How To Run Steel and Rubber Lines For Disc Brakes In Trailer
    I understand why it would seem confusing running the steel and rubber lines for disc brakes on your trailer that come in a disc brake kit like part # HSE7K-TR1. The steel lines are the main lines on the trailer and the rubber lines extend to the brake assemblies. I have attached a tandem axle diagram for your reference.
    view full answer...
  • Could HydraStar Disc Brake Kit w/ Actuator for Triple Axle Trailers Fit Dutchmen Voltage 3818
    7k axles like what your trailer has use inner bearing # 25580 and outer bearing 14125A. The grease seal is then usually # GS-2250DL. The HydraStar Disc Brake Kit w/ Actuator for Triple Axle Trailers # HSE7K-TR1 comes with these bearings and seal so it would work great on your 2014 Dutchmen Voltage 3818.
    view full answer...
  • What is the Difference Between the HSE7K-TRI and HSE7K-TR1SO
    The difference between these two kits is that the # HSE7K-TR1 comes with a complete hub and rotor that replaces your existing hub, where the # HSE7K-TR1SO is only the rotor which slips over your existing hubs. The hub that is included with the # HSE7K-TR1 requires that your current hubs use inner bearing # 25580 and outer bearing # 14125A, so if your hubs have different bearings using the rotor only kit would be the best option. Both of these kits come with all of the brake lines and...
    view full answer...
  • Complete Electric Over Hydraulic Brake Kit For A 2016 Grand Design Momentum With 7000 LB Axles
    Yes, the HydraStar Disc Brake Kit w/ Actuator for Triple Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K Item # HSE7K-TR1 is a complete kit for swapping the brake components. Since the current bearing grease has to be removed during instillation the new bearing need to be packed. I recommend LubriMatic Wheel Bearing Grease for Disc and Drum Brake Applications - 16-oz Can Item # L11380. It is also recommended to add a 40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket Item...
    view full answer...
  • How To Add Disc Brakes To a High-Tech Marine Triple Axle Trailer
    The HydraStar Disc Brake Kit w/ Actuator for Triple Axle Trailers part # HSE7K-TR1SO is an excellent option to add disc brakes to a triple axle trailer. The 14125A outer bearing tells me you have a 5,200 lb to 7,000 lb axle so the above kit should work just fine. That said, in order to prevent any potential issues with the hub lining up with the rotor, the part # HSE7K-TR1 would be a safer bet.
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Video Edited:
Jacob T
Installed by:
Kathleen M
Test Fit:
Shane H
Video by:
Jonathan Y
Written by:
Kristina F
Updated by:
Noah M

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