Description
Complete OEM Brake Replacement for Your Light Bee
First, the Surron Light Bee hydraulic brake assembly is the official OEM replacement system for the Surron Light Bee X and L1E models . Whether you need a front or rear brake assembly, this complete kit includes everything except the brake disc and caliper mount . The assembly comes pre-bled with mineral oil, making installation straightforward.
Unlike aftermarket kits, this OEM assembly maintains factory specifications and integrates seamlessly with your Light Bee’s electrical system. The included e-brake cut-off switch connects directly to your bike’s wiring harness .
What’s Included in the OEM Assembly
A complete OEM hydraulic brake assembly comes ready to install :
| Component | Included |
|---|---|
| Master Cylinder with Lever | Yes |
| Handlebar Clamp | Yes |
| Hydraulic Brake Hose | Yes |
| Brake Caliper | Yes |
| Brake Pads | Yes |
| E-Brake Cut-off Switch | Yes |
| Mineral Oil | Pre-filled, pre-bled |
| Brake Disc | No (sold separately) |
| Caliper Mount/Adapter | No (sold separately) |
The assembly is supplied pre-bled, saving you the hassle of bleeding the system . You simply mount the components and connect the e-brake switch.
OEM part number reference: 52200-YQ2F-0000 .
OEM Hydraulic Brake Specifications
| Feature | Specification |
|---|---|
| Type | Hydraulic disc brake system |
| Fluid | Mineral oil (factory filled) |
| Bleeding | Pre-bled, ready to install |
| E-Brake Switch | Integrated lead for motor cut-off |
| Compatible Models | Surron Light Bee X, Light Bee L1E |
| Weight | 0.21 kg (rear assembly) |
| Position | Front or rear (order separately) |
The mineral oil system provides consistent performance across temperature ranges. Unlike DOT fluid, mineral oil is non-corrosive and won’t damage paint if spilled.
The e-brake cut-off switch automatically cuts motor power when you apply the brakes . This safety feature prevents the motor from fighting the brakes during stopping.
Premium Aftermarket Upgrade Options
For riders seeking significantly improved braking performance, aftermarket upgrades are available.
Ultra Bee Moto Brake Conversion (Full Kit)
The Ebike Garage Full Moto Brake Conversion Kit upgrades your Light Bee to Surron Ultra Bee brakes :
| Component | Specification |
|---|---|
| Front Caliper | OEM Surron Ultra Bee (pre-bled) |
| Rear Caliper | OEM Surron Ultra Bee (pre-bled) |
| Front Rotor | 240mm oversized moto rotor |
| Rear Rotor | 230mm oversized moto rotor |
| Front Bracket | CNC 7075-T6 aluminum |
| Rear Bracket | CNC aluminum (Black/Silver) |
This conversion delivers true moto-level braking performance :
- Larger pistons significantly increase stopping power
- Higher heat capacity reduces brake fade during aggressive riding
- Improved modulation for better control
- OEM Surron reliability with factory components
The 240mm front rotor provides increased braking leverage and superior heat dissipation . The 230mm rear rotor is optimized for proper caliper alignment.
Rear-Only Moto Brake Conversion
If you only need rear brake improvement, the Ebike Garage Rear Moto Brake Conversion Kit includes :
| Component | Specification |
|---|---|
| Rear Caliper | OEM Surron Ultra Bee (pre-bled) |
| Rear Rotor | 230mm moto rotor |
| Caliper Bracket | CNC aluminum (Black/Silver) |
| Hardware | Required mounting hardware |
This rear-only conversion is ideal for riders who want improved rear braking without replacing the front system .
OEM vs. Aftermarket Brake Assemblies
| Feature | OEM Replacement | Ultra Bee Conversion |
|---|---|---|
| Braking Power | Stock level | Significantly increased |
| Heat Capacity | Standard | Higher |
| Rotor Size (Front) | 203mm | 240mm |
| Rotor Size (Rear) | 203mm | 230mm |
| E-Brake Switch | Yes | Not specified |
| Installation | Direct bolt-on | Requires brackets |
| Price Range | Moderate | Premium |
| Best For | Stock replacement, repairs | High-power builds, aggressive riding |
The OEM assembly is perfect for direct replacement of worn or damaged brakes. The Ultra Bee conversion is recommended for riders with upgraded controllers, motors, or aggressive riding styles .
Fitment Compatibility
These brake assemblies fit the following models:
| Model | OEM Assembly | Ultra Bee Conversion |
|---|---|---|
| Surron Light Bee X | ✅ Direct fit | ✅ Direct fit |
| Surron Light Bee L1E | ✅ Direct fit | ✅ Direct fit |
| Surron Light Bee S | ✅ Direct fit | ✅ Direct fit |
The Ultra Bee conversion is specifically designed for the Light Bee platform . The CNC brackets ensure proper caliper alignment with the oversized rotors.
Installation Overview
Installing a new hydraulic brake assembly requires mechanical competence.
Basic installation steps :
- Remove old assembly: Dismount the old master cylinder from handlebar
- Remove old caliper: Unbolt the old brake caliper from the fork/swingarm
- Install new caliper: Mount the new caliper using thread lock (Loctite 243)
- Install new master cylinder: Attach to handlebar with the clamp (torque to 4 Nm)
- Connect brake hose: Route and secure with pipe clamps
- Align caliper: Pinch brake lever and tighten caliper bolts to 8-10 Nm
- Connect e-brake switch: Plug into the bike’s wiring harness
For OEM pre-bled assemblies, no bleeding is required . For custom conversions, bleeding will be necessary.
Important: Brake fluid in the Light Bee is mineral oil and is not corrosive, but spills should still be wiped up promptly .
When to Replace Your Brake Assembly
Consider replacing your brake assembly if :
- Brake lever feels spongy despite bleeding
- Fluid leaks from the master cylinder or caliper
- Pistons are seized or damaged
- You’ve upgraded motor power and need stronger braking
- Aggressive riding causes brake fade
For stock Light Bee owners, the OEM assembly is a direct replacement. For high-power builds, the Ultra Bee conversion is strongly recommended .
Torque Specifications
Use these torque values when installing :
| Fastener | Torque |
|---|---|
| Master cylinder clamp bolts | 4 Nm |
| Caliper mounting bolts | 8-10 Nm (with thread lock) |
| Brake hose banjo bolts | Consult service manual |
Thread lock (Loctite 243) is required on caliper mounting bolts .
Pricing and Availability
| Product | Price | Source |
|---|---|---|
| OEM Rear Hydraulic Brake Assembly | £160.00 / $199.00 | ORO2U |
| OEM Front Hydraulic Brake Assembly | £160.00 / $199.00 | ORO2U |
| Full Moto Brake Conversion Kit | Premium | TB Electric |
| Rear Moto Brake Conversion Kit | Premium | TB Electric |
| PROOTOM Front Brake Assembly | $139.99 | Amazon |
The PROOTOM aftermarket assembly offers a lower-cost alternative, though OEM quality may vary .
PROOTOM Aftermarket Option
The PROOTOM front disc brake master cylinder kit is an aftermarket alternative :
| Feature | Specification |
|---|---|
| Material | Aluminum + plastic |
| Fitment | Surron Light-bee and other e-off-road motorcycles |
| Installation | Plug-and-play |
| Price | $139.99 |
This budget option is ideal for riders who need a replacement but don’t want to pay OEM prices.
Pros of OEM Hydraulic Brake Assembly
- Direct OEM replacement for Surron Light Bee X/L1E
- Pre-bled with mineral oil, ready to install
- Complete assembly includes lever, master cylinder, hose, caliper, pads
- E-brake cut-off switch integrated
- Factory quality and fitment
- Mineral oil non-corrosive
- 12-month warranty from authorized dealers
Cons of OEM Hydraulic Brake Assembly
- Brake disc not included (sold separately)
- Caliper mount not included
- Less powerful than Ultra Bee conversion
- OEM price is premium
- 203mm rotor only (no upgrade option)
Who Needs This Brake Assembly?
The Surron Light Bee hydraulic brake assembly is perfect for:
- Stock Light Bee owners replacing worn or damaged brakes
- Riders wanting factory-spec replacement
- Those who prefer OEM quality and fitment
- Light Bee L1E owners needing street-legal components
Consider the Ultra Bee conversion if:
- You have upgraded motor power or controller
- You ride aggressively and experience brake fade
- You want maximum stopping power
- You weigh more than average and need stronger brakes
Why Choose an OEM Hydraulic Brake Assembly?
In conclusion, the Surron Light Bee hydraulic brake assembly provides reliable, factory-spec braking for your electric dirt bike. The OEM assembly comes pre-bled and ready to install, saving time and hassle . The integrated e-brake switch ensures proper motor cutoff for safety.
For stock Light Bee owners, the OEM assembly is the correct replacement choice. For high-performance builds, the Ultra Bee moto brake conversion offers significantly more stopping power .
Whether you need a simple OEM replacement or a full brake upgrade, there’s an option for your Light Bee. The pre-bled design makes installation accessible for home mechanics.
For more Surron replacement parts, browse our Collection of Surron Brake Components or read our E-Moto Maintenance Guide.














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