EBMX X-9000 Power Kit

The EBMX X9000 is the controller kit riders reach for when they want a large, usable increase in power from a Talaria Sting, a SurRon Light Bee or a SurRon Ultra Bee without rewiring the bike. It is engineered as a direct bolt in replacement for the factory controller, it runs on the stock battery or an upgraded EBMX pack, and it is tuned from a phone app. This guide covers what the kit does, what it needs from the rest of the bike and what it changes about how you ride.

What the EBMX X9000 kit is

EBMX is an Australian company that builds controllers, batteries and chargers for light electric motorcycles, and the EBMX X9000 is its flagship controller for the Sting and Light Bee class of bike. The kit is the controller itself plus the harness adaptors and mounting hardware needed to drop it into the space the factory unit occupies. Nothing is cut and nothing is soldered. EBMX describes it as plug and play, and in practice that is accurate as long as your bike is one of the supported platforms.

The number in the name describes the power class the controller is built for, not a fixed output. What your bike actually produces after the swap is decided by the battery you connect, because a controller can only deliver the current the pack is willing to supply. That point matters enough that a full section below is devoted to it.

Three platforms, one controller

The same EBMX X9000 fits three bikes with the appropriate harness. On the Talaria Sting it replaces the 2 kg factory FOC unit that sits under the seat. On the SurRon Light Bee it takes the place of the stock controller behind the battery. On the Ultra Bee it is a more involved swap but still a bolt in one. When you order, tell us the exact model and year so the correct harness ships with the kit.

• Talaria Sting MX3 and Sting R MX4, 60V platforms with 6 kW and 8 kW peak factory ratings.
• SurRon Light Bee X and Light Bee S, 60V platform.
• SurRon Ultra Bee, 74V platform.

What a controller does on an electric dirt bike

To judge an EBMX X9000, start with the job a controller does. A battery supplies direct current at a fixed voltage. A permanent magnet motor needs three alternating phases whose timing tracks the rotor position exactly. The controller sits between the two, switching the battery supply through banks of MOSFETs thousands of times a second to synthesise those three phases. It also reads the throttle, applies the current limits, manages regenerative braking, watches temperatures and talks to the display. Change the controller and you change every one of those behaviours at once.

Battery current versus phase current

Two different currents matter and riders mix them up constantly. Battery current is what flows out of the pack, and multiplied by pack voltage it gives you the electrical power going in. Phase current is what flows in the motor windings, and it sets torque. At low motor speed the controller acts like a transformer: it can push very high phase current into the windings while drawing far less from the battery, because the motor is being driven at a low effective voltage.

That is why a bike with a big phase current limit leaves the line hard even on a modest battery, while top end pull depends on battery current and voltage. The stock Sting R MX4 gives a reference point. Its 8 kW peak at 60V implies a battery current in the region of 130 A, and the bike ships with a 125 A circuit breaker. An EBMX X9000 on a suitable pack asks for considerably more than that, which is why the breaker and the battery both come into the conversation.

Field oriented control

The factory Sting controller already uses FOC, field oriented control, and so does the EBMX X9000. FOC measures rotor position, from Hall sensors on the MX3 motor or the magnetic encoder on the MX4 IPM motor, and steers the stator field so that it always sits at right angles to the rotor magnets. That gives smooth torque, quiet running and high efficiency. The difference between the two controllers is not the control method, it is current capacity, switching hardware, thermal design and the fact that the EBMX controller lets you adjust the parameters.

Battery pairing decides the result

The single biggest misunderstanding about the EBMX X9000 is that the controller makes the power. It does not. It unlocks whatever the battery can supply. A stock Talaria pack has a BMS with a discharge limit set for the factory controller, and it will hold the X9000 to a moderate gain. Fit an EBMX pack built for high discharge and the same controller delivers a completely different bike.

Voltage and current do different jobs. Extra current gives more torque at the bottom. Extra voltage gives more power at the top, because the motor can spin faster before back EMF catches up with the supply. A 72V pack on the EBMX X9000 is therefore the route to higher top speed as well as more punch, but it commits you to a 72V charger and it cannot be run on the factory controller at all. Our Talaria battery guide goes deeper on 60V versus 72V chemistry and weight.

Heat and throttle discipline

Every watt the motor does not turn into motion becomes heat in the windings, the magnets and the controller. The factory MX4 motor is quoted at 92 percent peak efficiency, so at 8 kW it is already shedding several hundred watts. Push the same 7 kg air cooled motor towards 15 kW and the loss grows sharply, because resistive loss rises with the square of current. Nothing about the EBMX X9000 changes the physics of the motor it drives.

EBMX is direct about this in its own guidance. An EBMX X9000 is intended for off road riding with on and off throttle use, not sustained wide open throttle. Do not hold full throttle for longer than 10 to 15 seconds. Do not run repeated full throttle passes back to back. Ride in the power mode you need at the time rather than living in the top mode, and if you regularly ride long distances at three quarter throttle, reduce the tune so the motor can sustain it.

Protection and its limits

The EBMX X9000 monitors motor temperature and rolls power back when it reaches the configured threshold. That protection is valuable, but it is a safety net rather than a licence. Heat soaks into the magnets from the windings faster than a single sensor can report, and a motor that has been pushed past its limits can lose magnet strength permanently. If you want a motor you can lean on harder, the IPM Sting MX4 replacement motor is the current factory design and the one most riders pair with a high output controller.

Tuning the EBMX X9000 from the app

The EBMX X9000 is configured over Bluetooth from the EBMX app on a phone. There is no laptop, no serial cable and no firmware flashing in the field. The app exposes several riding modes, each with its own battery current limit, phase current limit, throttle response and regen strength, and it shows live data including motor and controller temperature while you ride. Treat it as a tuning tool and a diagnostic screen in one.

A sensible first tune

1. Load the EBMX base tune for your bike and battery combination before you change anything. It is conservative on purpose.
2. Ride a full battery on that tune and watch the peak motor temperature the app reports. That number is your baseline.
3. Raise phase current first in small steps if you want more torque off the line, keeping battery current where it is.
4. Raise battery current only if the pack is rated for it. A stock Talaria pack should stay at or near the factory limit.
5. Set regen to taste, remembering that strong regen on loose ground can lock the rear wheel on closed throttle.
6. Change one parameter per ride so you know which change produced which result.

A good EBMX X9000 tune is one you can ride all day without the temperature warning appearing. If you find yourself relying on the thermal rollback, the tune is too high for the way you ride, not too low.

Wiring, display and installation

Installing the EBMX X9000 on a Sting is a workshop afternoon rather than a project. The controller mounts where the factory unit sat, the supplied harness connects the battery, the three motor phases, the motor sensor plug, the throttle and the brake switches, and the whole job needs nothing more than hand tools and care. The most important step is confirming phase and sensor order before the first throttle input, which the app helps with.

1. Remove the battery and the seat, then photograph the factory controller and every connector before touching anything.
2. Unplug the factory unit, unbolt it, and offer up the EBMX controller on the same mounts.
3. Connect the harness, matching phase colours and the sensor plug, and route the Bluetooth antenna clear of the frame.
4. Refit the battery, pair the app, load the base tune and run the motor detection routine with the rear wheel off the ground.
5. Check throttle, both brake cutouts and regen at walking pace before riding properly.

What the stock display shows afterwards

The Talaria dash communicates with the factory controller over CAN. After the EBMX X9000 swap, how much of that data the stock screen continues to show depends on the firmware the kit ships with and the battery you have fitted. Many riders treat the app as the primary instrument and keep the Sting R display in place for speed and battery. If keeping full stock dash function matters to you, tell us your exact setup before ordering.

Legal position and warranty

On an off road Sting MX3 or MX4, fitting the EBMX X9000 changes nothing about where you may ride. Those bikes were never road vehicles and remain confined to private land with the landowner’s permission, or to organised events run under bodies such as the Auto Cycle Union.

A road legal Sting is different, and the EBMX X9000 has consequences there. The L1e and L3e versions are approved under Regulation (EU) 168/2013 with a declared maximum power and, for L1e, a 45 km/h limit. Replace the controller with a higher output unit and the vehicle no longer matches its approval. It cannot lawfully be used on the road until it has been approved again as a modified vehicle through the DVSA inspection process, which may also mean a change of category and of the licence you need. Insurance written on the approved specification would not cover the modified bike.

Warranty impact

Fitting any aftermarket controller affects the powertrain warranty on the bike, because the motor, battery and wiring are then operating outside the specification they were warranted for. The kit itself is covered by our UK warranty, full terms on the warranty page. If your bike is new and you are unsure, ask us before you buy rather than after.

How the X9000 compares with the other controllers we sell

We stock three controller upgrades for the Sting and each takes a different view of what an upgrade should be. The EBMX X9000 is the one built for the largest gains and the widest platform support, which also makes it the one that demands the most from your battery.

If your goal is the most power a Sting chassis can carry and you are prepared to pair the controller with an EBMX battery, the EBMX X9000 is the answer. If you want a modest lift with the stock pack and no change to the dash, the KO Moto Rush is the gentler route. If you enjoy adjusting every parameter yourself, Nucular rewards that. Our guide to Talaria controller upgrades walks through the decision in more depth.

Frequently asked questions

Does the EBMX X9000 work with the stock Talaria battery?

Yes. The EBMX X9000 is designed to run on the factory 60V pack as well as EBMX batteries. On the stock pack the gain is limited by the BMS discharge ceiling, so you get a sharper, stronger bike but not the full output the controller is capable of. The large gains come from pairing it with an EBMX high discharge pack.

Do I need a 72V battery to make it worthwhile?

No. The EBMX 60V 65Ah pack is rated by EBMX for up to 15 kW with the EBMX X9000 and it keeps your existing charger and battery compartment. A 72V pack adds top speed and needs a 72V charger. Most Sting riders start with the 60V route and only move to 72V if they want more speed.

Is the kit really plug and play on a Sting?

Yes, provided you order the Sting harness. The EBMX X9000 mounts in the factory position and every connection is a plug. You still need to run the motor detection routine in the app and check throttle and brake cutouts before riding, but there is no cutting, crimping or soldering.

Can I fit an EBMX X9000 to a road legal Sting?

You can physically fit it, but the bike then no longer matches its L1e or L3e approval and cannot lawfully be used on the road until it has been approved again as a modified vehicle. Insurance on the approved specification would not apply. For road riding, keep the factory controller.

Will it damage my motor?

Not if you respect the guidance. Keep wide open throttle to 10 to 15 seconds, avoid repeated full throttle runs, use the power mode you need rather than the highest one, and let the temperature protection do its job. Riders who ignore that can overheat a stock motor regardless of which controller is fitted.

What happens to the factory display?

The dash still powers up and, depending on firmware and battery, continues to show speed and battery information. The EBMX app becomes the primary source of controller data, including temperatures and current. If you need full stock dash function preserved, contact us with your model and battery details first.

Next steps

Order the EBMX X9000 with the harness for your bike, and if you want the output the controller was built for, add the EBMX 60V 65Ah battery at the same time. Everything ships with UK mainland delivery, timescales confirmed at checkout. Unsure which combination suits your riding, or whether the KO Moto Rush would serve you better? Browse the full Talaria parts range or send us a message through the contact page.

Buying this from The Talaria UK

Our service promise as a UK Talaria specialist.

• Checked before it shipsEvery bike is unboxed, inspected, torqued, charged and test run in our workshop before the courier is booked. You get a machine that is ready to ride, not a crate and a leaflet.
• Packed to arrive intactBikes travel in their factory crate with the fragile parts protected, and we tell you exactly what to check before you sign for it.
• UK mainland deliveryShipped across the UK mainland, with options, costs and timescales confirmed at checkout and tracking sent on dispatch.
• Answers from people who ride theseAsk which model suits your weight, your ground or your licence and you get an answer from someone who has set these bikes up, not a script.
• Parts on the shelfWe stock the batteries, chargers, controllers, motors, forks and wheels for what we sell, so a repair or an upgrade is a stock check rather than a long wait.
• Covered after you buyEvery bike is covered by our UK warranty, with the period for this model shown on this page and in your order confirmation, and claims handled by the team that inspected it.

Questions before you order? Contact us, or read the delivery guide, the warranty terms and finance options.