Ultra Bee Rear Brake Kit for E-Bikes

Upgrade your e-bike with powerful Ultra Bee braking and a 220mm rear rotor. Built for high-power e-bikes and e-moto-style builds that need more braking performance than typical stock bicycle brakes.

Why Our Ultra Bee Brakes?

• 220mm oversized rear rotor
• Powerful hydraulic braking
• Improved braking control and feel
• Pre-bled and ready to install
• Includes mounting bracket and hardware
• Designed for high-power e-bike builds

What's Included

• Ultra Bee rear hydraulic brake assembly
• Brake lever & master cylinder
• Hydraulic brake line
• Rear caliper
• 220mm rear rotor
• ER Moto mounting bracket
• Mounting hardware

Fitment

Compatible with many popular high-power e-bikes, including:

Super73: ZX, RX, S2
Macfox: X1, X1S, X2, X7
Ridstar: Q20, Q20 Pro, E26
Zooz: Ultra Urban / UU
Freego & other compatible e-bikes

Fitment can vary by model and configuration. Some bikes may require an additional brake adapter. If you're unsure whether it fits your bike, contact us before ordering.

Important

Professional installation is recommended if you're not experienced with hydraulic brakes. Always verify brake function and rotor/caliper clearance before riding.

Upgrade your brakes now. — ER Moto