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Hydrastar Disc Brake Conversion Kit for Tandem 7K Axles - 8 on 6-1/2 - 1/2" Studs
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Price: $2,815.38
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Hydrastar Disc Brake Conversion Kit for Tandem 7K Axles - 8 on 6-1/2 - 1/2" Studs
Part Number: HYD866FR
$2,815.38
We'll connect you with nearby partnered installers who know this exact setup.
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Hydrastar Trailer Brakes - HYD866FR
- Disc Brakes
- 7000 lbs Axle
- Hub and Rotor
- Marine Grade
- 8 on 6-1/2 Inch
- Hydrastar
- 1/2 Inch Studs
Convert your tandem-axle trailer to hydraulic disc brakes with this complete Hydrastar kit. Includes 1,600-psi electric-over-hydraulic actuator, integral hub-and-rotor assemblies, brake lines, wiring, and hardware.
Features:
- Complete disc brake conversion kit upgrades your tandem-axle trailer to hydraulic disc brakes
- Designed for 7,000-lb axles with 8-lug wheels and 1/2" wheel studs
- Integral design combines each hub and rotor into a single assembly
- Hydrastar electric-over-hydraulic actuator provides up to 1,600 psi of hydraulic pressure
- Dacromet-coated brake components resist corrosion for dependable performance
- Includes integral rotors, calipers, and mounting brackets
- Hydraulic brake line kit supplies the lines, fittings, and hardware needed to connect both axles
- Corrosion-resistant alloy tubing is triple annealed to allow easier routing and bending
- Includes bearings and grease seals for the integral hub-and-rotor assemblies
- Includes 7-way wiring, prewired junction box, breakaway battery, and mounting hardware
- Meets applicable DOT and federal braking requirements
Specs:
- Application: tandem-axle trailers with 7,000-lb axles
- Wheel bolt pattern: 8 lug
- Wheel stud diameter: 1/2"
- Brake mounting flange: 5 bolt
- Actuator pressure: 1,600 psi
- Brake line length: 25'
- Brake line diameter: 3/16"
- Maximum brake line pressure: 3,000 psi
- Actuator voltage: 12V DC
- Lubrication: grease only
- Hydrastar part number: C7K-T1
Note: DOT 3 or DOT 4 brake fluid is required and sold separately.
C7K-T1 Hydrastar Disc Brake Conversion Kit for Tandem 7K Axles - 8 on 6-1/2 - 1/2" Studs
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See what our Experts say about this Hydrastar Trailer Brakes
- Hydrastar Disc Brake Conversion With a 2026 Silverado Factory Brake ControllerHey Brian! You can keep the factory brake controller in your 2026 Chevy Silverado 2500 when installing the Hydrastar Disc Brake Conversion Kit # HYD866FR. You'll want to add the Hydrastar GM Adapter Module # HYD29ZR to address the compatibility issue between the GM controller and Hydrastar actuator. This is a complete kit that includes everything you need for installation. It has the brakes, bearings, seals, actuator, brake lines, 7-way wiring, junction box, and breakaway battery. It is...
view full answer... - Recommended All in One Disc Brake Conversion Kit for a Tandem Axle Trailer w/ 7,000 lbs AxlesWelcome back Johnny! To completely replace your trailer's brakes, I recommend the Hydrastar Disc Brake Conversion Kit for Tandem 7K Axles item # HYD866FR. This kit includes a electric over hydraulic brake actuator, hub and rotor assemblies, brake lines, 7-Way connector and junction box, new bearings, breakaway kit and hardware. The Hydrastar Disc Brake Conversion Kit item # HYD866FR is designed to fit 7,000 lbs axles. The new rotors have a 8 on 6-1/2" bolt pattern with 1/2" wheel studs....
view full answer... - Can I Convert My Tandem 7K Trailer Axles From Drum Brakes to Disc Brakes?Hey George, thanks for reaching out. Yes, the Hydrastar # HYD866FR gives you all the major components needed to convert two 7,000-lb trailer axles from electric drum brakes to hydraulic disc brakes. This setup uses an 8 on 6-1/2" bolt pattern with 1/2" wheel studs and gives you the stronger, more consistent braking performance that makes disc brakes especially attractive on heavier trailers. Before ordering, I recommend verifying your axle capacity, bearing combination, wheel bolt pattern...
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Info for this part was:
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