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Marine Hydrastar® 6K Axles, 6 Lug Slip Over Triple Axle Trailer Disc Brake Kit (1/2") {M6K-TR1SO} - Hydrastar

Marine Hydrastar® 6K Axles, 6 Lug Slip Over Triple Axle Trailer Disc Brake Kit (1/2") {M6K-TR1SO}

SKU #M6K-TR1SO
by Hydrastar
Save 14% Save 14%
$1,899.00
$1,899.00 - $1,899.00
$1,899.00
$1,628.00
$1,628.00 - $1,628.00
$1,628.00

Complete triple axle disc brake conversion kit for 6K axles with 6-lug hubs. Includes the Hydrastar EOH actuator, disc brake assemblies, brake lines, and all hardware needed for a full conversion. Marine-rated with stainless steel components for saltwater environments.

6K
Axle Rating
TRIPLE
Axle
DISC
Brakes
DOT
Compliant
What You Get

In The Box & Sold Separately

Included
✓
(3) E303-6K1SO-A(FL) — Hydrastar® 6K Rated, Dacromet Coated Slip Over Single Axle Brake Kit (1/2 in. ) Corrosion-resistant Dacromet Coated Roto
✓
(6) 303-E36C — 3K/6K Axle Rated Dacromet Coated Caliper (3) 303-E6LBS 6K Axle Rated Dacromet Coated Bracket LH
✓
(3) 303-E6RBS — 6K Axle Rated Dacromet Coated Bracket RH
✓
(1) Hydrastar® Hydraulic Triple Axle Flexible Brake Line Kit – 24 ft., 3/16 in. Main, 3000psi hydraulic brake pressure The H
Sold Separately
–
DOT 3 or DOT 4 Brake Fluid
–
Tools for installation
Questions about fitment?

Feel free to reach out to us or start a live chat in the bottom right corner for assistance.

Common Questions

Before You Buy

What PSI actuator is included?+
The 1,600 PSI GEN 8 actuator is included. This is the correct pressure for both disc and drum brake applications.
Do I need anything else to complete the install?+
You will need DOT 3 brake fluid (not included). Basic hand tools and a way to mount the actuator to your trailer tongue.
What is the difference between integral and slip over?+
Integral kits replace your entire hub and rotor as one piece. Slip over kits mount the rotor over your existing hub — faster install, no hub removal needed.
2024–2026 GM Silverado, Sierra & Denali Owners

Dashboard showing “Service Trailer Brakes”? Brakes disabled?

That’s a known GM software issue. Hydrastar has the fix — the GM Diode Module (#381-7074) is a plug-and-play inline solution.

Need Help Choosing?
Our team has helped thousands of trailer owners find the right setup.
Fastest response? Use the chat bubble in the bottom-right corner ↘
or call (812) 655-4544 · Mon–Fri, 8am–4:30pm ET