Features to know about

Upgrade to Confident, Consistent Braking: Electric-Over-Hydraulic Disc Kit with 3,500-lb Axle Rating

If your old brakes are fading or dragging, this Hydrastar kit gives you modern stopping power and smooth control. The electric-over-hydraulic actuator ties into your existing in-cab brake controller and activates the trailer brakes instantly for even, confident stops. With a 3,500-lb axle capacity and a 5 on 4-1/2" bolt pattern, it’s built for real highway performance and consistent braking when you need it most.

Quick, Clean Conversion: Slip-On Rotors Mount Over Existing Hubs

Swapping to disc brakes doesn’t have to mean replacing everything. These over-the-hub rotors slip right over your idler hubs and are held by your existing wheel bolts—no need to change the whole hub-and-rotor assembly. The 10" cast-iron rotors meet SAE specifications and are vented to shed heat fast, cutting down on fade and keeping braking smooth on long grades.

Built to Last in Real Conditions: Stainless Steel Calipers and Dacromet Rotors

Rust can kill braking performance fast, especially if your trailer sees rain or damp storage. The dacromet-coated rotors and stainless steel calipers in this kit resist corrosion for lasting reliability. That means less maintenance and dependable braking even after seasons of use.

All-In-One Setup for DIY Upgrades: Complete Tandem-Axle Line Kit Included

Everything needed for the upgrade is in the box—electric-over-hydraulic actuator, over-the-hub disc brakes, stainless calipers, tandem-axle brake line kit with fittings, clamps, and hardware. With simple connections and clear part layout, it’s designed for straightforward installation by anyone confident with basic tools. Once bled and wired in, you’ve got a strong, responsive braking system ready to roll.