ETM RTR Ultra Bee Rear Brake Kit

ETM RTR Ultra Bee Rear Brake Kit

Upgrade your ETM RTR with an Ultra Bee rear brake system designed specifically for the RTR platform.

ER Moto developed this custom Ultra Bee brake conversion specifically for the ETM RTR, combining a powerful moto-style brake system with our custom-machined RTR-specific mounting solution.

With 600+ ETM RTR riders already running this setup, it's one of the most proven rear brake upgrades available for the RTR.

Choose Your Brake System

Without Surron Logo — Best Value
Our non-OEM option delivers the Ultra Bee-style braking upgrade at a lower price while using the same ER Moto RTR-specific mounting solution.

OEM Ultra Bee — Premium Option
Choose the genuine OEM Surron Ultra Bee brake system for proven OEM quality, performance, and feel.

Both options are pre-bled and ready to install.

Why Upgrade?

• Stronger braking performance

• Improved braking control and feel

• Moto-style hydraulic brake system

• Custom ER Moto RTR-specific brake mount

• Clean bolt-on installation

• No cutting or fabrication required

• Pre-bled and ready to install

• Compatible with dirt, big-wheel, and supermoto setups

ETM RTR Fitment

Designed specifically for:

• ETM RTR Lite

• ETM RTR Sport

• ETM RTR Alpha

• ETM RTR XL

• ETM RTR XL Alpha

What's Included

• Ultra Bee rear brake system

• ER Moto custom-machined aluminum brake mount

• Brake line

• Required mounting hardware

• Pre-bled brake system

Everything needed for the RTR-specific conversion is included.

Built for the RTR. Proven by RTR Riders.

ER Moto designs and develops parts specifically for electric dirt bikes. This Ultra Bee brake conversion was developed around the ETM RTR platform and has already been purchased by 600+ RTR riders.

Whether you want the genuine OEM Ultra Bee brake system or the more affordable Without logo option, this is a complete, RTR-specific brake upgrade designed to bolt on and ride.