Sealed Hydraulic Disc Brakes for KUKirin G2, G2MAX, G4, T3, G3 Pro Electric Scooter

Replace fading leverage with firm, predictable stops that cut your reaction distance instantly. This sealed hydraulic disc brake kit swaps out stretched cables and weak levers for a closed fluid system that resists fade on steep descents or damp city streets. You pull the lever lighter and feel the caliper bite sooner, giving you calm, controlled deceleration across every commute.

The harness lines up cleanly with most 2024 and newer KuKirin units like the G2 Pro, G2 Max, G3 Pro, and G4. It also mounts to common e-bike and micro-mobility frames that share standard post-mount layouts. You get a noticeable shift in ride stability without adding drag to your wheels.

Benefits & Tips

• Less manual maintenance. The sealed hydraulic circuit holds pressure steadily, so you skip routine bleed cycles and cable tension tweaks.
• Confirm disc diameter first. Your frame likely calls for a 160 mm front rotor or a 140 mm rear rotor, so measure before opening the box.
• Grab auxiliary hardware early. Owners of the G2 Pro or G4 should order the matching spacers or mounting brackets alongside this set to avoid mid-installation pauses.

Product Specifications

• Sensor type. A 2-pin power-off switch cuts motor output the moment you squeeze the handle, linking back through a 10 to 20 cm cable.
• Hose routing. The front line measures roughly 1350 mm while the rear loop extends to approximately 2150 mm for clean routing.
• Weight profile. The full harness ships near 1 kg to keep steering responsive and unsprung mass low.
• Power rating. Engineered for standard 12 V mobile electrical architectures common to light e-vehicles.

Package Includes

• Left or right front master cylinder assembly
• Right or left rear master cylinder assembly
• Pre-filled front hydraulic hose
• Pre-filled rear hydraulic hose
• Integrated 2-pin brake sensor cord
• All necessary bolts, nuts, and quick-fit adapters

Warnings & Reminders

Double check your mounting position and existing rotor size before placing your order. Never force smaller brackets onto larger discs with homemade shims, as uneven clamping creates stress cracks and sudden lever failure. Stick strictly to the manufacturer-approved bracket for your exact disc width to maintain structural integrity.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Delivering verified performance upgrades since 2002 at intercyprus.com — mount this set and roll out on pavement that finally feels solid under your fingertips.