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

Part Number: HYD87VR

1 Reviews | 2 Questions

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$2,360.48

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hydrastar trailer brakes disc marine grade

hydrastar trailer brakes hub and rotor 7000 lbs axle hyd87vr

hydrastar trailer brakes disc hub and rotor brake kit w/ actuator for tandem axle trailers - 13 inch hub/rotor 8 on 6-1/2 7k

hydrastar trailer brakes disc 7000 lbs axle brake kit w/ actuator for tandem trailers - 13 inch hub/rotor 8 on 6-1/2 7k

hydrastar trailer brakes marine grade hub and rotor

hydrastar trailer brakes disc hub and rotor hyd87vr

hydrastar trailer brakes disc 7000 lbs axle

hydrastar trailer brakes marine grade 7000 lbs axle hyd87vr

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Before you hit the road, grab this all-in-one upgrade for your tandem-axle trailer. Kit includes everything you need to switch your trailer over to disc brakes for improved performance and greater stopping power. Perfect for use with boat trailers. Great 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 HYD87VR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.

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Hydrastar Trailer Brakes - HYD87VR

Highlights

Better Braking Feel: Electric-over-hydraulic system delivers firm, responsive stops.
Complete Kit: Includes actuator, calipers, hubs, rotors, bearings, seals, and lines.
Corrosion Resistant: Dacromet-coated parts stand up to moisture and road salt.
Quick Response: Pump reacts fast to your in-cab brake controller for smoother braking.
Wide Fit Range: Works with tandem 7K axles using 13" hub-and-rotor assemblies.
Proven Strength: Rated for 7,000-lb axles and tested for consistent braking under load.

Specs

Specs:

Axle capacity: 7,000 lbs
Bolt pattern: 8 on 6-1/2
Rotor diameter: 13"
Wheel stud diameter: 9/16"
Warranty:
- Actuator: 2 years
- Brakes and components: 1 year

Bearings, Race, and Seal Information:

Bearings:
- Inner bearing: 25580
- Outer bearing: 14125A
Races:
- Inner race: 25520
- Outer race: 14276
Oil seal: HYD27FR
- 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) 15' 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

E7K-T9 Hydra Star Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K

4.0

1 reviews

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by: Bill11/04/2025

See what our Experts say about this Hydrastar Trailer Brakes

Do you have a question about this Trailer Brake?

Disc Brake Conversion Kit for a 5th Wheel Trailer w/ 7,000 lbs Axles
Hey Bill thanks for the information. The C865H-9/16 in that axle tag number means you have 8 on 6-1/2 hubs with 9/16" lug studs. The Hydrastar item # HSE7K-T1, you were looking comes with 1/2" lug studs. You'll need the Hydrastar Disc Brake Kit w/ Actuator item # HYD87VR instead. What brake controller do you have and what tow vehicle are you using? You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.
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Do you have a question about this Trailer Brake?

Info for this part was:

Updated by:

Wilson B

Edited by:

Michael B

Written by:

Dawn Z

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