RZEOZU Mini Bike Hydraulic Brake Kit for Mega Moto MM80/GMB100 — Rear 180mm Rotor & 50" Hose

This kit provides the core components needed to upgrade the rear braking on compatible 80–105cc minibikes and Coleman/Monster Moto clones without welding or frame alteration. It replaces the stock mechanical cable brake with a sealed hydraulic caliper, a 180 mm rotor, a dedicated rear caliper bracket, brake pads, and a 50" hose—engineered for improved modulation and shorter stopping distance on dirt and pavement riding.

What exactly is included and how does it fit my minibike?

The package contains a hydraulic rear caliper assembly, a rear caliper mounting bracket sized for a 2" (51 mm) hole spacing, two replacement brake pads, a 180 mm disc rotor, mounting hardware, and a 50" (approx. 1270 mm) brake hose pre-fitted for standard 7/8" (22 mm) handlebars. It is designed as a direct bolt-on replacement for the listed mini bike models so installation is quick and clean.

• Hydraulic rear caliper and bleeder port for maintenance
• 180 mm stainless-style disc rotor for reliable contact surface
• Rear caliper bracket with 2" (51 mm) bolt center spacing
• 50" hose length and handlebar master cylinder sized for 7/8" (22 mm)
• Mounting bolts, washers, and two brake pads included

How does switching from a cable brake to hydraulic help performance?

Hydraulic brakes transfer lever input through fluid, giving a more consistent, progressive feel and stronger clamping force compared with stretched mechanical cables. Riders notice crisper response during moderate to aggressive braking, especially downhill or over rough ground where cable stretch and friction undermine stopping power.

• More even pressure at the caliper for predictable braking
• Reduced lever effort with improved modulation
• Better resistance to cable stretch and contamination
• Easier adjustments by bleeding versus cable tensioning

Is installation complicated and will I need to modify my frame?

The kit is made for direct mounting on compatible models without welding or cutting. The rear caliper bracket bolts into existing mounting points; the brake hose and master cylinder attach to a 7/8" handlebar clamp. Basic hand tools and minimal mechanical experience are all that’s required.

• No welding or frame modification required for supported models
• Includes required hardware for bolt-on installation
• 50" hose provides enough length for routing on most minibike frames
• Simple bleed procedure recommended after fitment

Who is this upgrade for? This RZEOZU kit is aimed at minibike owners who ride Monster Moto/Mega Moto 80cc–105cc or similar Coleman RT/RB100 models and want crisper, more dependable rear braking. If you run off-road, carry heavier loads, or simply want a modern brake feel in place of an ageing cable system, this kit gives a compact hydraulic solution that installs quickly with the parts included. Note: compatibility is limited to the listed models—confirm fitment and measurements before purchase to ensure proper match.