ETM RTR Lite 60v to 72v Tune Service

ETM RTR Lite Controller Reflash 60v to 72v Tune Service – Voltage Upgrade Performance

Take your ETM RTR Lite to the next level with our 60v to 72v Controller Reflash Service—a precision reprogramming of your stock controller that unlocks the full potential of a 72v power system.

This service is designed for riders upgrading to 72 volts who want a seamless transition and full benefit from the extra voltage. By recalibrating your controller for 72v operation, this tune delivers:

• Optimized voltage tapering for smoother power delivery as the pack voltage drops

• Full use of your battery’s capacity, giving you stronger and more consistent performance across the entire charge

• Extended high-performance window, so power doesn’t fall off sharply as the battery discharges

Perfect for riders who want every bit of usable performance from their upgraded battery setup, this tune ensures your RTR Lite pulls hard and consistently from full charge all the way down.

Please Note:

• This is a mail-in service. You must send in your stock motor controller.
• Inbound shipping will be provided within 72 business hours of placing order (See warning below)
• This service is optional—the High Torque Mod Motor runs great without it, staying cooler and delivering a big performance boost right out of the box.

  What’s Included:

• Shipping to send controller in within the lower 48 states
• Custom performance tune applied to your factory controller
• Unlocks the motor’s full 30°C increased thermal window
• Maintains factory fitment, wiring, and reliability
• Optimized for racers and high-demand riders

If you want to extract the absolute maximum from your ETM RTR setup, this tune is the key to unlocking it.

WARNING: You MUST have a 72v nominal battery and proof of purchase! If you do not have or can’t provide proof, your order for this service will be cancelled, this service is NOT for the stock ETM RTR Lite 60v battery.

⚠️ Voltage Compatibility Disclaimer

Once your controller has been tuned for a 72V nominal battery, it will no longer be compatible with a 60V nominal system.

Attempting to use a 60V battery with a 72V-tuned controller may result in:

• Failure to power on

• Undervoltage faults

• Erratic or unstable behavior

• Potential damage to the controller or powertrain

However, a 60V-tuned controller can operate with a 72V battery, but it will:

• Not have voltage tapering and you may experience a sudden power shut off when running at low power. 

If you're planning to run a 72V battery, we highly recommend performing a proper 72V tune for full performance, compatibility, and safety.

You will receive an email with shipping information/details. You will need to ship your controller in to our shop and our staff will reflash it and send the controller back to you. Expect 2-3 business days after we receive it to get your re-flashed controllers tracking number.