Unleash Your Surron’s Full Potential
First, the BAC 8000 Stage 2 Power Upgrade Kit is the ultimate controller conversion for Surron Light Bee X, Light Bee S, and Segway X260 owners seeking maximum performance . Unlike the stock 130A controller limited to 6kW peak output, the ASI BAC 8000 delivers staggering power levels that completely transform your riding experience.
The BAC 8000 comes pre-configured by specialized tuning companies like EBMX, GLE (Green Line Engineering), and EVFreaks . These turnkey kits are plug-and-play, eliminating the complex manual setup that typically frustrates DIY tuners . Whether you’re running the stock 60V battery or an upgraded 72V system, the BAC 8000 delivers unprecedented torque, acceleration, and top speed.
The BAC 8000 Controller: Raw Specifications
The ASI BAC 8000 is a high-performance, programmable motor controller from Accelerated Systems Inc. (ASI). Its specifications are genuinely staggering :
The 1,000 amp peak current rating is particularly noteworthy. For context, the stock Surron controller delivers approximately 130A continuous and 280A peak . The BAC 8000 can theoretically handle over three times that current, limited only by your battery’s capabilities .
The controller is potted for water resistance and reliability . This means the internal electronics are encapsulated in protective material, preventing moisture and vibration damage in off-road conditions .
Stage 2 Power Output: What You Can Expect
The actual power output depends on the specific Stage 2 tuning variant and your battery configuration :
The EBMX 60V tune delivers 8.5 kW out of the box, with the option to increase to 12 kW using the EBMX app . The 72V tune starts at 15 kW, providing truly explosive acceleration that can rival 250cc gas dirt bikes .
The GLE BAC 8000 V2 kit is the most extreme option, with a potential output of 66,000 watts . This level of power requires a matching high-discharge battery (72V-81V) and upgraded motor to handle the increased stresses.
What’s Included in a Complete Stage 2 Kit
A comprehensive BAC 8000 Stage 2 Power Upgrade Kit typically includes :
The EBMX kit includes custom cable extensions designed to better fit the controller on the frame . The GLE “Purple Haze” kit adds the GLE Dashboard app (for tuning, diagnostics, and dyno capabilities) and an engine brake cut-off feature .
The EVFreaks kit comes with a 3D-printed mounting bracket system and remote setup support from their team .
Performance Benefits: What Changes on the Trail
Installing a BAC 8000 Stage 2 kit fundamentally transforms the riding experience :
Significant Torque Increase:
- With a 60V setup, you can expect up to 50% more power and torque
- The bike accelerates dramatically harder from a standstill
- Wheelies become effortless with just throttle input
- Hill climbing capability improves substantially
Higher Top Speed:
- Stock Surron Light Bee: approximately 45-50 mph
- With BAC 8000 (60V stock battery): +15 mph (60-65 mph)
- With BAC 8000 (72V aftermarket battery): up to 80 mph
- The EVFreaks kit reports a top speed increase of +22 km/h (about 15 mph)
Smoother Throttle Control:
- The BAC 8000’s programmable torque curves provide far smoother power delivery than the stock controller
- Custom tuning eliminates the abrupt on/off feel common with basic controllers
- Regenerative braking adds engine braking effect when decelerating
Better Response Across the RPM Range:
- The bike pulls harder in the mid-range where it matters most for trail riding
- No more power drop-off at higher speeds
- Consistent performance even when the battery is low
Compatibility and Installation
The BAC 8000 Stage 2 kit fits the following models :
| Model | Compatibility |
|---|---|
| Surron Light Bee X | Direct fit |
| Surron Light Bee S | Direct fit |
| Segway X260 | Direct fit |
| Talaria Sting (with adapter) | EBMX system available |
Installation difficulty is moderate to advanced . The kit is designed as plug-and-play, but requires mechanical competence and attention to detail .
Basic installation steps :
- Remove the stock controller and its mounting bracket
- Install the new BAC 8000 mounting plate/heatsink to the frame
- Mount the BAC 8000 controller to the plate
- Connect the custom wiring harness to the controller
- Route the harness to the battery, motor, throttle, and display
- Connect the regen throttle (included in most kits)
- Install the new display (EggRider, GLE Dashboard, etc.)
- Secure all cables with zip ties
- Perform initial configuration (app-based tuning)
- Test at low power before full-throttle runs
Professional installation is available through vendors like Charged Cycle Works for an additional labor fee . If you choose to install it yourself, remote support is available at a rate of approximately $75 USD per hour .
Warning: Installing an aftermarket controller will void your Surron battery warranty (if still covered) . This upgrade is intended for off-road use only.
Tuning and Configuration
One of the BAC 8000’s greatest strengths is its adjustability. The EBMX version uses the EBMX app (available on Apple and Android app stores) to control nearly every aspect of the controller :
The GLE Dashboard is a full-featured vehicle interface that also assists with tuning, diagnostics, telemetry, and even dyno capabilities . The app can dynamically switch between different battery voltages (60V, 72V, 81V) without reconfiguration .
The EggRider v2 display (included in some kits) allows on-the-fly adjustment between up to 9 power modes . You can configure a “low power” mode for technical trails and a “full attack” mode for open sections.
The BAC 8000 also supports auto-tuning of hall sensors, making it compatible with encoder motors as well as standard hall sensors .
Battery Considerations
The stock Surron 60V battery works with the BAC 8000, but it has limitations. The BMS (Battery Management System) on the stock battery typically limits continuous discharge to around 100-120A . To fully unlock the BAC 8000’s potential, an aftermarket high-discharge battery is recommended.
Battery options for full potential :
A 72V battery upgrade paired with the BAC 8000 transforms the bike into a true 80 mph electric motorcycle . However, this requires a new 72V charger as well (not included in standard Stage 2 kits) .
Warranty and Support
Installing a BAC 8000 Stage 2 kit will void your Surron Light Bee’s original warranty, particularly for the battery . Vendors like EBMX provide their own warranty coverage for their controller and components, but this does not extend to the stock Surron parts.
Charged Cycle Works offers professional installation services and remote support at $75 USD per hour . EVFreaks provides free remote setup support as part of their kit purchase .
Neither EBMX nor Charged Cycle Works accepts liability for DIY battery bypasses or installations on their range of ASI modifications . If you are not confident in your mechanical abilities, professional installation is strongly recommended.
BAC 8000 vs. Stock Controller
Pros of BAC 8000 Stage 2 Upgrade Kit
- Massive power increase – 8.5kW to 25kW+ depending on battery
- Top speed improvement – Up to 80 mph (72V setup)
- Dramatically better acceleration – Wheelies on demand
- Regenerative braking – Added control and battery recharging
- Fully tunable – Adjust power, torque, and throttle feel via app
- Plug-and-play – Pre-tuned kits eliminate complex manual programming
- Multi-voltage support – Works with 60V, 72V, and 81V batteries
- EggRider or GLE display – Real-time telemetry and mode switching
- Advanced cooling – True Fin heatsink options available
- Professional support – Remote tuning assistance from vendors
Cons
- Premium cost – 890−1,500+ for complete kit
- Voids original warranty – Particularly battery coverage
- Requires mechanical skill – Installation is not trivial
- Stock battery limits power – Full potential requires aftermarket battery
- Increased heat – Higher power demands better cooling
- Potential reliability concerns – More stress on motor and drivetrain
- Not legal for street use – Off-road only in most jurisdictions
Who Needs the BAC 8000 Stage 2 Upgrade?
The BAC 8000 Stage 2 Power Upgrade Kit is perfect for:
- Heavy riders (200+ lbs) who need more torque for proper hill climbing
- Racers and track riders pushing Surron Light Bee to its limits
- Street-speed enthusiasts wanting 80 mph capable e-moto (72V setup)
- Aggressive off-road riders who overwhelm the stock controller
- DIY tuners who want complete control over power delivery
- Those planning to upgrade to a high-discharge 72V battery
It may NOT be suitable for:
- Casual trail riders satisfied with stock power
- Budget-conscious owners unwilling to invest $900+
- Riders without mechanical aptitude or access to a mod shop
- Those still under factory warranty who don’t want to void coverage
Why Choose the BAC 8000 Stage 2 Upgrade?
In conclusion, the BAC 8000 Stage 2 Power Upgrade Kit is the definitive controller upgrade for serious Surron Light Bee X owners. Whether you choose the EBMX version for its refined 8.5kW-15kW tuning and app control, the GLE “Purple Haze” V2 for its extreme 66kW potential, or the EVFreaks kit for its plug-and-play simplicity, you’re getting a transformative performance upgrade .
The BAC 8000 delivers power, torque, and tunability that no other aftermarket controller can match. The regen braking adds control and extends range. The custom displays like EggRider v2 or GLE Dashboard provide real-time telemetry and on-the-fly mode switching.
For those who demand the absolute best from their Surron Light Bee, the BAC 8000 Stage 2 Power Upgrade Kit is not just an upgrade—it’s a complete transformation of what your bike is capable of achieving.
Invest in the kit that matches your power goals and battery configuration. Ride with confidence knowing you have the most advanced controller on the market.
For more Surron performance upgrades, browse our Collection of E-Moto Controller Upgrades or read our Surron Power Upgrade Guide.
