ㆍElectric motorcycles without a transmission are forced to rely entirely on motor output to cover launch, cruising, and top speed.
This results in compromises where low speed efficiency and high speed efficiency cannot be optimized at the same time.
With a three speed layout, GXM-P allows first gear to compensate for motor torque limitations at launch and load conditions, while third gear extends efficiency and speed without overdriving the motor.
As a result, a 3000 watt motor equipped with GXM-P can deliver performance and real world efficiency that cannot be achieved even with larger 4000 or 5000 watt motors using single reduction systems.
ㆍUnlike internal combustion motorcycle transmissions, GXM-P does not require clutches, hydraulic systems, or complex shift actuators.
Through F·Link Shifting, gears remain free when conditions are not aligned and engage only at the correct moment through direct mechanical linking.
This allows smooth and efficient shifting under load using a simple mechanical structure optimized specifically for electric motors rather than combustion engines.
ㆍBy integrating GXM-P, system level downsizing becomes possible across the entire powertrain.
Lower motor output requirements reduce cost, thermal stress, and battery demand while improving overall efficiency.
This leads to longer riding range, improved battery lifespan, reduced component cost, and higher long term durability.
GXM-P is therefore not just a transmission upgrade but a system level solution that improves performance, efficiency, and total cost simultaneously.
ㆍElectric motors do not operate at the same efficiency across their entire speed range.
There is always a defined rated efficiency speed window where power output, electrical consumption, and thermal behavior are optimally balanced.
For a typical 3000 watt class electric motor, peak efficiency is generally achieved in the range of approximately 2000 to 3500 rpm.
Below this range, the motor must draw significantly higher current to produce the required torque, leading to rapid efficiency loss and increased thermal stress on the battery and inverter.
Above this range, efficiency again declines due to increased electrical and mechanical losses caused by over speed operation.
Electric motorcycles using single reduction systems are therefore forced to operate the motor outside its optimal efficiency range during hill climbing or high speed riding.
GXM-P’s three speed transmission allows gear selection to match riding conditions so the motor can remain close to its 2000 to 3500 rpm rated efficiency window during hill climbs steady cruising and high speed operation.
As a result, a 3000 watt motor equipped with GXM-P delivers higher real world performance while reducing unnecessary current draw heat generation and system stress.
As highlighted in the table, the colored zones indicate the motor’s rated peak efficiency range.
Compared side by side, the difference is clear: with GXM-P’s 3-speed transmission, the motor remains within its optimal efficiency window across a wide range of vehicle speeds, while a fixed reduction system quickly pushes the motor outside this range as speed increases.
This improves overall efficiency and extends the operating life of the motor inverter and battery as a complete powertrain system.