Ultra Bee Rear Brake Kit

Ultra Bee Rear Brake Kit Australia.

Upgrade the rear braking performance of your electric dirt bike with the Ultra Bee Rear Brake Kit, a high-performance conversion system designed to deliver stronger, more consistent stopping power for riders across Australia. Built around the Sur-Ron Ultra Bee brake platform, this kit is a popular choice for riders upgrading Sur-Ron Light Bee, Talaria Sting, Talaria XXX and similar e-moto models that need more rear brake bite, better heat management and improved control on demanding terrain.

For Australian riders using their electric dirt bike on private property, trails, farm tracks and recreational off-road areas, reliable rear braking is essential. The rear brake helps control speed on descents, manage traction in loose corners and support precise line choice through technical sections. An upgraded rear brake kit can make a noticeable difference in confidence and control, especially when riding aggressively or carrying extra weight.

What’s Included in the Kit.

A typical Ultra Bee rear brake kit includes all the core components needed for a complete hydraulic rear brake conversion:

• Genuine Sur-Ron Ultra Bee rear caliper with pads

• Ultra Bee master cylinder and brake lever (for hand-operated kits)

• Oversized floating brake rotor, commonly 220 mm, 230 mm or 240 mm in diameter and 3.5 mm thick

• CNC billet caliper bracket with integrated rotor guard

• Steel-braided hydraulic line with PTFE core, rated for DOT4 fluid

• Mounting hardware and shims for correct alignmentebikegarage+4

The Ultra Bee caliper is a 2-piston floating design, paired with a matching master cylinder for consistent lever feel and modulation. The rotor is typically made from heat-treated 420J2 stainless steel, featuring cooling grooves and a floating (bobbinless) design to improve heat dissipation and reduce brake fade during repeated hard stops.ebikegarage+3

Performance Benefits.

Compared with the stock 203 mm fixed rotor setup commonly found on the Sur-Ron Light Bee, an Ultra Bee rear brake kit can deliver up to 30% more stopping power. This improvement comes from the combination of a larger rotor diameter, thicker rotor material, more effective caliper design and better heat management.ebikegarage+1

Key performance benefits include:

• Stronger initial bite: The larger rotor and upgraded caliper provide more immediate stopping force, useful for quick speed checks before corners or obstacles.ebikegarage+1

• Better fade resistance: The floating rotor design with cooling grooves helps dissipate heat more effectively, maintaining consistent performance during long descents or repeated hard braking.ebikegarage+3

• Improved modulation: The Ultra Bee master cylinder and hydraulic system offer a more progressive, controllable lever feel, allowing riders to fine-tune braking force rather than dealing with an on/off sensation.ebikegarage+2

• Enhanced durability: Heat-treated stainless steel rotors and quality pads are built to withstand the demands of off-road riding, including mud, dust and repeated hard stops.ebikegarage+3

Compatibility and Installation.

The Ultra Bee rear brake kit is designed as a direct bolt-on upgrade for several popular e-moto platforms:

• Sur-Ron Light Bee X / LBX: Uses factory mounting points (M6x54mm), with no drilling or fabrication required.ebikegarage+4

• Talaria Sting / XXX / MX4: Compatible as a rear brake upgrade, with kits designed to bolt onto existing swingarm mounts.shop.tiktok+1

• SRPNT X3 and similar models: Also supported with appropriate bracket configurations.ebikegarage

For Australian riders, it’s important to confirm the exact model and mounting pattern before ordering. Some frames may require small shim washers (0.5–1.5 mm) behind the caliper for perfect alignment, though most kits include these or account for them in the design.ebikegarage

Installation involves:

1. Removing the stock rear brake assembly

2. Mounting the new rotor to the wheel hub

3. Attaching the caliper bracket to the swingarm

4. Connecting the hydraulic line and bleeding the system

5. Testing lever feel and brake function before riding