Avinox's new M2S and M2 motors have shaken up the e-bike market, offering unprecedented power and torque while maintaining a competitive weight. The M2S, in particular, boasts an impressive 1,300 W and 130 Nm of continuous power, with a staggering 1,500 W and 150 Nm in burst mode, far surpassing the industry standard of 85 Nm and 600 W. This is a game-changer for e-MTBs, but what does it really mean for riders? Personally, I think the most fascinating aspect is the potential for extended range. With larger-diameter windings and flat wires, the M2S motor achieves an efficiency of 84.5%, theoretically providing up to 845 W of assistance. This means that for a given level of assistance, the new motors should offer slightly more range, which is a huge deal for long-distance riders. However, it's important to note that efficiency drops at high power outputs, which is why the M2S motor's peak performance is more suited to bursts of speed rather than sustained high-power output. What many people don't realize is that the M2S motor's dual-gear meshing design and helical gears in the M2 motor effectively eliminate gear play noise, making for a much smoother and quieter ride. This is a significant improvement over competitors who still struggle with clacking noises from reduction gears. The new 700 Wh battery, with a claimed weight of 3.18 kg, is a game-changer for brands looking to maintain a slim downtube with an integrated battery. It's also the first removable battery option from Avinox, offering 600 or 800 Wh capacity, which is a worthwhile tradeoff for those who want off-bike charging or to travel with their e-bike. The 600 Wh battery can also be mounted externally above the downtube as a range extender, offering 1,200 to 1,400 Wh of energy to compatible bikes. In terms of drag, Avinox has replaced a high-resistance oil seal with a low-resistance sealed bearing, reducing pedalling drag by 41% while maintaining the same level of protection. This is a significant improvement over competitors who still struggle with noticeable friction from seals when pedalling above the assistance speed limit. The Avinox display, with its ability to import routes from third-party navigation apps and pair with heart rate monitors, is a welcome addition. It allows for granular control of assistance modes, start assist, overrun, and max torque, as well as setting a charge limit to help maintain battery health. The batteries are claimed to maintain 80% capacity after 500 charge cycles, which is a significant improvement over competitors. Overall, the Avinox M2S and M2 motors are a game-changer for e-MTBs, offering unprecedented power and torque while maintaining a competitive weight and efficiency. The new batteries and drag reduction are significant improvements over competitors, and the refined system is a testament to Avinox's commitment to innovation. However, it's important to note that the powerful motor can drain the battery pretty fast, so proper range testing is essential. In my opinion, the M2S motor is a must-have for serious e-MTB riders who want the best performance and range possible.
