A controller that will unlock the full potential of your Sur-Ron Light Bee.

A complete kit that includes the сontroller, on-board computer, mounting adapter, and ready-to-install wiring harness. Connect everything to the factory connectors and tune the bike to match your riding style.
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Compatible with stock and aftermarket battery systems up to 90V.

All factory functions and systems remain fully operational.

Up to 2000W more power and up to 11 mph (18 km/h) higher top speed on a stock battery.

3-year manufacturer warranty and lifetime technical support.
More Power. Smoother Throttle. Less Noise.

Sur-Ron riders notice the difference

from the very first ride:

  • Improved low-speed acceleration.
  • Up to 2kW more power on a stock 60V battery.
  • Up to 11 mph (18 km/h) increase in top speed.
  • Smooth, jerk-free acceleration and precise throttle control with instant response.
  • Clean factory appearance: the OEM-style controller and adapter integrate neatly into the frame.
  • Up to 30kW peak power with a 72V battery and upgraded motor, unlocked with a quick settings update.
Additional features
  • Cruise control for comfortable riding and commuting.
  • Up to 3 configurable power profiles.
  • More than 200 adjustable parameters with automatic tuning.
  • Reverse mode for maneuvering in tight spaces.
  • Regenerative braking with energy recovery.
  • Bluetooth connectivity and mobile app support for tuning and monitoring.
Complete Plug&Ride kit: everything for a quick upgrade
You get everything required to replace the factory controller with a clean, factory-style installation.
Nucular P24F controller with pre-installed firmware for Sur-Ron Light Bee
High-impact ABS adapter designed to protect the controller from mud, water, and mechanical damage
Ready-to-install wiring harness with connectors to connect Nucular P24F to stock Sur-Ron wiring
Phase wire extensions with bolts and nuts for a convenient connection between the motor and controller
A 47.2 in (120 cm) CAN-bus data cable for controller to On-board computer connection
On-board computer with a large 2.9″ high-contrast FSTN display with a fork stem mount
Install the controller without soldering, extra adapters, or compatibility guesswork
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Technical specifications:
the numbers that define performance
The Nucular P24F controller is engineered for high-performance ebikes and advanced drive system tuning. Built around a 32-bit ARM processor, it combines advanced Field-Oriented Control (FOC) with Maximum Torque Per Amp (MTPA) algorithms to deliver efficient, quiet, and responsive motor operation.

Peak power: up to 30kW
Continuous power: 10kW
Operating voltage: 30-90V
Maximum phase current: 500A
Maximum battery current: 350 A
Operating temperature: -30°C to +80°C
Efficiency: up to 98%
Weight: 1.44 kg
Protection rating: IP67
Dimensions: 205×98×50 mm
View full specifications
Get expert guidance on compatibility, installation, and tuning for your build
We’ll answer your technical questions and help you choose the right configuration for your build
TALK TO AN ENGINEER
Installs into factory mounts in 30 minutes with zero issues for stock electronics
The Plug&Ride kit is designed for straightforward self-installation. Every component is prepared and ready to connect.
Factory-compatible connectors pre-installed
Every wire is fitted with connectors that match the factory wiring harness. Simply connect the plugs, secure the phase wires, and mount the adapter.
Firmware for the Sur-Ron Light Bee already installed
After installation, simply run automatic tuning to calibrate the motor parameters.
All factory systems remain fully functional: the kickstand sensor, tip-over sensor, throttle, ignition switch, headlights, and turn signals. The stock speedometer is replaced by the Nucular On-board computer. The factory handlebar switch will be configured to toggle between two power modes.
Watch our step-by-step video guide for a quick and easy controller installation
Fully programmable system for ultimate bike control
The controller adapts to your riding style.
For those who need a turnkey solution
The auto-tune system measures the motor’s inductance and resistance, selecting the optimal values in just 2 minutes.
2 pre-configured profiles (toggled via the stock Sur-Ron switch) OR 4 profiles with the display kit, unlocking reverse and a third mode via the onboard screen buttons.
The default settings work perfectly with the stock motor and 60V 38Ah battery. Other versions will require a quick setup adjustment.
For those who demand ultimate control
Over 200 parameters for complete DIY customization.
Fine-tune current and torque curves to customize bike response for every degree of throttle twist.
Customizable regenerative braking profiles: set your preferred deceleration rate and energy recovery to the battery.
Flexible motor and controller thermal limits: define temperature thresholds for smooth power throttling.
Advanced field weakening and current limits give you total control over top speed and power output in every single riding mode.
Adjust power and other parameters on the fly via the On-board computer
The Nucular On-board computer mounts to the handlebar and fully replaces the stock switch. The screen displays current speed, total odometer, trip distance, riding modes, and more.
High-contrast monochrome FSTN display with an ambient light sensor and built-in heater. It won’t fog up in humid weather and ensures zero lag in freezing temperatures.
Adjust controller settings directly through the menu: change current limits, regen strength, throttle curves, and more—with no phone required.
The regenerative braking thumb throttle (sold separately) connects directly to the onboard computer.
Real-time parameter display: customize your screen to show exactly what you want (power, voltage, mileage, temperatures, battery level, and more).
Switch power profiles easily using the buttons right on your onboard computer.
Nucular App: tune your bike right from your phone screen
Connect your phone to the controller and manage your bike through an intuitive graphical interface.
A Bluetooth module is required for the app to function. It is sold separately and is not included in the base kit.
All features in a single interface: adjust parameters, fine-tune current and torque curves, set limits, configure regen profiles, and more.
Intuitive dashboard: your phone screen displays speed, mileage, battery level, and all other key metrics—just like the onboard computer.
The app is available for both iPhone and Android. Download it from the App Store or Google Play and connect to your controller in seconds.
The app completely replaces the On-board computer. If you prefer managing your bike via smartphone, you don't need the display.
A complete suite of solutions for a smooth, safe ride and reliable bike performance.
Every mile of your ride is powered by electronics built for extreme environments. Here is how the Nucular controller maintains long-term performance.
  • Up to 98% efficiency
    The Field-Oriented Control (FOC) algorithm with reduced switching loss mode minimizes energy lost to power MOSFET heating. As a result, the battery delivers more useful work and drains slower under identical loads.
  • Phase short-circuit protection
    In the event of a phase-to-phase short circuit, the controller will detect the anomaly and shut down the output stage. Wiring faults are prevented at the hardware level.
  • Sleep current less than 300 µA
    When powered off, the controller consumes minimal energy. Your bike can sit for weeks without recharging, while the battery maintains its charge level.
  • Regenerative braking with battery charging
    During deceleration, the controller converts kinetic energy into electricity and feeds it back into the battery. This extends your range by 5−15% depending on the terrain, while brake pads wear out 2 to 3 times slower.
  • Motor and controller thermal management
    Temperature sensors monitor motor windings and the controller heatsink in real time. Upon reaching critical values, the system smoothly reduces power, protecting components from overheating during long climbs and in hot weather.
  • Hardware-level overcurrent and short-circuit protection
    Built-in circuitry shuts down the controller in the event of overcurrent or a phase wire short circuit. The electronics react within microseconds, preventing power MOSFET burnout.
Boost your ebike’s speed, power, and other parameters
Get a consultation with a Nucular engineer.
Talk to an engineer
Strong community, tech support via messengers, firmware updates,
and warranty service.
When you buy a Nucular controller, you get an official manufacturer warranty and lifetime access to support from the very engineers who designed the hardware and software.
  • Support chat
    Feel free to ask questions about installation, setup, and diagnostics. Support is available in any language.
  • Owners community
    Our group chats bring together thousands of riders. Share your experience and connect online.
  • Firmware updates
    Are released regularly and can be installed via the Bluetooth module or an SD card in the onboard computer. New features, improved algorithms, and bug fixes are always available for free.
  • Worldwide warranty
    Enjoy peace of mind with a 3-year warranty on your controller and 1 year on the On-board computer. We also provide full post-warranty service and repairs whenever needed.
We manufacture electronics for Light Electric Vehicles (LEVs), including e-bikes, go-karts, electric surfboards, paramotors, utility vehicles, and tracked vehicles.

designing electronics since 2014, trusted by riders in 70 countries worldwide

In-house hardware and proprietary software for seamless compatibility.
20+ distributors and manufacturing partners worldwide.
We continuously expand our software functionality and customize firmware for OEM manufacturers.
Rated 4.6 out of 5 on Trustpilot. Users consistently praise our product quality, regular updates, and responsive tech support.
Joint projects with international brands: Nucular electronics power electric vehicles from HPC Bikes (USA), Havoc bike (Czech Republic), Jetscooter (Greece), and many more.
We proudly support educational projects and racing teams. Building an electric vehicle for a student project or competition? Contact Nucular engineers.
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This kit is perfect
for anyone looking to upgrade their Sur-Ron Light Bee
Want a power and speed boost for daily riding without a complex upgrade.
Want to stand out and give their bike a sleek look with an aesthetic adapter.
Seek total control and ultra-smooth motor performance for a comfortable ride, even off-road.
Compete in amateur or semi-professional races where high peak power and flexible parameters are critical.
Want a reliable controller with hardware-level protection to safely use their bike for daily commuting.
Nucular is the choice of those who:
This Is For Me
What riders who upgraded to Nucular are saying
I’ve used Nucular on two Sur-Rons for 3 and 6+ years. It’s been an awesome experience. The extent of settings you can change is nice, and the screen is nice. I would always choose it.
Szymon K.
The build quality of those products are amazing. Throttle response is quite unique.
After sell service is quick, easy and efficient. The people working there are nice and pleasant.
Patrick B.
I've had a Nucular 24F controller on my bike for years now. It is easy to program and power delivery is so smooth. On top of that, their customer service is top notch, always there to answer tech questions.
John C.
Join thousands of riders who have already upgraded to Nucular
Order your kit today and upgrade your e-bike
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Answering frequently asked questions about installation, compatibility, and warranty
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