Talaria Sting MX3 MX4 72V 55Ah 35KW RACE Battery Upgrade

Premium 72V battery system built for the Talaria Sting MX3 and MX4. Designed for high-demand off-road and street riding, this pack delivers up to 35KW peak power with stable performance throughout the charge. Assembled in Europe using AA-grade Samsung 50S or Molicel P42B cells.

Each unit is built without nickel strips. Instead, full nickel sheet conductors are used to improve current flow, reduce heat, and extend service life. Copper builds available on request. Every pack is rated for over 1000 charge cycles.

Product Features:
• Genuine Samsung 50S or Molicel P42B AA-grade cells
• Long cycle life and stable performance
• Active discharge and thermal protection
• Intelligent active and passive cell balancing
• 6AWG silicone discharge cables
• QS8 antispark discharge connector
• XT90 charge connector
• 12-month warranty

What’s Included:
• 6AWG discharge harness with QS8 connector
• 125A high-current breaker
• Spacer kit for lid clearance
• Anti-shift wedge for secure tray fit
• Full support for installation and setup

Ultra Bee 81V 75Ah Battery

This is so far the most powerful battery pack for Sur Ron Ultra Bee, which delivers up to 35-60kW peak with a 650AMP BMS. Depending on the cells you choose, you can choose power output in the options.

21700 Molicell cells grade AA+, batch year 2025 (no pouch cells).

Hand-built in Germany (no China imports) with logos=.

Copper construction fully welded only (not nickel!!!).

Stainless steel case 2mm thick, laser welded and powder coated (case colour can be chosen on request).

Pre-order yours now. Building time 3-4 weeks.

Accelerate more smoothly with the best electric throttle on the market. This short-twist handle has snappy rebound, and it keeps up continuous speed without annoying power springs. Now you can ride harder with less wrist tension. Like all of our Sur-Ron upgrades, we provide everything that you need for easy installation. 

Works with the stock Sur-Ron controller either as with any other upgraded controller like BAC, TORP, Nucullar, ebmx, ko, fardriver, kelly, silixon, etc.

APT750C Display for the ASI BAC4000 and ASI BAC8000 Controllers.

We offer two options: one with the default display and one featuring the custom old v2 evfreaks logo loading on the screen.

Both screens come with a power level control button.

A wiring loom for ASI BAC controllers, if needed, can be purchased separately from our listing.

This service includes comprehensive deep programming for the ASI BAC4000 and ASI BAC8000 controllers, including full re-flashi of your controller and updating it with our own EVFREAKS software. We will go through each setting to optimize your controller's performance uniquely for your bike.

How it works? 
An EVFreaks team engineers are able remotely connect to your phone to assist in programming your setup - you just need Android device for this and few apps installed.

Issues with Your Controller?

If you're experiencing problems such as throttle delays or operational issues with your ASI BAC4000/BAC8000 controller, we recommend exploring our diagnostic and repair services listed separately. These options might provide a cost-effective solution.

Looking to increase the power of your Sur Ron ?

The ASI BAC4000 Controller Setup delivers up to 15kW of power and 420 phase amps - leveling up your ride to complete new experience.

🔧Fully customizable:

✅Tunable for 60V or 72V systems
✅Works seamlessly with the stock OEM 60V battery or upgraded 72v battery systems

For example:

When paired with the original 60V battery, you’ll experience 50% more power, increased torque, quicker acceleration, and approximately +22km/h (15mph) higher top speed.

When paired with a 72V battery, you can reach speeds of up to 120km/h (75mph).

Whats included in the kit:

Controller Unit ASI BAC4000

Thumb Throttle - Regenerative Braking – Engages motor braking while recharging your battery and simultaneously locking your rear wheel.

Wiring Loom IP65 – Our in-house made looms are unique as they reroute the throttle pin directly to the controller from your main loom.

Mounting Kit – 3d printed 'PETG' top and bottom mounting brackets

Displays:

You can purchase without display (meaning controller will have only 1 power mode - the one it's set to) or you can choose EggRider v2 Display or EggRider c1 displays

Why Choose EVFREAKS ASI Controller Kit?

This controller comes pre-programmed with evfreaks software, ready for you to ride as plug & play - but if you there having issues with the setup - we will be more when happy to assist you remotely over the phone and carry out remote programming session with you free of charge for the first time setups.

Looking to increase the power of your Sur Ron ?

The ASI BAC8000 Controller Setup delivers up to 32kW of power and 850 phase amps - its double the size of its smaller brother BAC4000 and double the power! 

🔧Fully customizable:

✅Tunable for 60V or 72V systems
✅Works seamlessly with the stock OEM 60V battery or upgraded 72v battery systems

For example:

When paired with the original 60V battery, you’ll experience 50% more power, increased torque, quicker acceleration, and approximately +22km/h (15mph) higher top speed.

When paired with a 72V battery, you can reach speeds of up to 130km/h (80mph).

Whats included in the kit:

Controller Unit: ASI BAC8000

Programming Session: one of the EVF engineers will help you to set up your controller remotelly

Thumb Throttle - Regenerative Braking: Engages motor braking while recharging your battery and simultaneously locking your rear wheel.

Wiring Loom IP65: Our in-house made looms are unique as they reroute the throttle pin directly to the controller from your main loom.

Mounting Kit – 3d printed 'PETG' top and bottom mounting brackets

Displays:

You can purchase without display (meaning controller will have only 1 power mode - the one it's set to) or you can choose EggRider v2 Display or EggRider c1 displays

Why Choose EVFREAKS ASI Controller Kit?

This controller comes pre-programmed with evfreaks software, ready for you to ride as plug & play - but if you there having issues with the setup - we will be more when happy to assist you remotely over the phone and carry out remote programming session with you free of charge for the first time setups.