If your trailer still runs drum brakes, this Hydrastar kit is a big step up. The electric-over-hydraulic actuator ties into your existing brake controller and gives you disc brake response that’s fast and consistent, even at highway speeds. The complete kit upgrades one single axle rated at 3,500 lbs and includes two Dacromet-coated disc brake end kits, calipers, mounting brackets, and hardware for a stronger, smoother stop every time.
Swapping to discs doesn’t have to mean replacing everything. These over-the-hub Dacromet-coated rotors simply slip over your standard idler hubs and use your existing wheel bolts to hold them in place. If you ever damage just the hub or rotor, you can replace that part alone instead of the entire assembly. It’s a clean, DIY-friendly design that makes installation and future maintenance straightforward.
Long descents and heavy loads generate serious heat, but these cast iron rotors are vented to move air through the core and shed heat fast. That means less risk of fade and more consistent braking under pressure. Built to SAE specifications, the cast iron design provides reliable friction performance for confident control in demanding conditions.
No need to chase down fittings or lines—the kit includes a hydraulic single-axle brake line kit with (1) 188" long brake line, (1) 70" long brake line, (2) 21" male/male rubber flex lines, a 3/8" brass T-fitting, a 3/8" brass union fitting, nylon hose clamps, and self-tapping screws. With hardware sized for 1/2" wheel studs and a 5 on 4-1/2" bolt pattern, it’s ready to bolt up and go.
Every part of this setup is engineered for dependable use—Dacromet protection fights corrosion, the actuator delivers smooth pressure with quick response time, and the calipers only have one moving part for simple upkeep. The actuator carries a 2-year warranty and the brakes and components carry a 1-year warranty, giving you solid assurance that your upgrade is built to last.
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