The UCI forces Avinox to cut its M2S to compete with a RACE750 version

One year ago, the UCI set a clear line in the development of competition e-MTBs by establishing a maximum power limit of 750 W at the rear wheel. That decision excluded systems like the original Avinox, which, with figures well above that threshold, represented the most aggressive leap in the segment. Now, with the arrival of the new M2 and M2S generation, the scenario changes, but not in the direction many expected.

Avinox enters UCI competition with a limited version of the M2S and confirms the clash between power and regulations

The international body has updated its list of approved motors, and for the first time, Avinox appears. It does so with a specific designation that does not go unnoticed, M2S RACE750. It is not a new motor as such, but an adaptation of the brand's most powerful system to comply with current competition regulations.

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The recently presented Avinox M2S is capable of reaching up to 1,500 W and 150 Nm in its standard version, so it cannot be used in UCI-regulated races. And to be able to enter that ecosystem, it has been necessary to limit its performance to adjust it to the 750 W threshold, which points to a specific version developed for competition.

This move confirms something that was already suspected since the introduction of the EPAC protocol. The technological evolution of motors is ahead of regulation. While manufacturers push for ever higher figures and more sophisticated systems, the UCI tries to maintain a balance that preserves the role of the cyclist within the discipline.

Although the technical changes of this RACE750 variant have not been detailed, everything points to a software limitation of the motor to adjust the power delivery to the required parameters. This fits with the system's own architecture, which allows modifying behavior through software and assistance profiles, something that has been part of its approach since the first generation.

Avinox's entry into the UCI list marks its official arrival in the competitive field after being excluded from the Valais 2025 World Championship precisely for exceeding the established limits. Now, with this adapted version, the system can be used in E-XC and E-Enduro events, entering directly into a scenario where manufacturers like Bosch, Shimano, or SRAM are already present.