The Avinox M2S Motor: What Riders Actually Need to Know
If you've been paying attention to the eMTB world lately, you've probably heard the name Avinox floating around. Maybe you've seen the spec sheets. Maybe you've read the press releases. But if you're anything like us, what you really want to know is simple: does this thing actually change the ride?
Short answer: yes. Here's the longer version.
Who Is Avinox?
Avinox is a motor manufacturer backed by Bosch engineering that's been building drive systems specifically for eMTBs. They're not new to the game, but their latest generation of motors, the M2S and M2, represent a serious leap forward from what most riders are used to seeing on the trail.
Over 60 bike brands are integrating Avinox systems into their builds right now, including Mondraker, which is how we got our hands on the first bikes running the M2S. More on that in a minute.
M2S vs. M2: What's the Difference?
Avinox launched two motors in this generation. The M2S is the high-performance option, and the M2 is the more trail-oriented version. Both are compact and weigh about 2.6kg, which is essentially the same footprint as the previous generation. The difference is in the guts.
The M2S puts out 1,500 watts of peak power and 150Nm of peak torque, with 130Nm continuous. It uses a dual-gear meshing system that delivers power smoothly across the full range. This is the motor you want if you're riding steep, technical terrain and you need the bike to match your effort without hesitation.
The M2 comes in at 1,100 watts peak and 125Nm of torque. It uses helical gears, which makes it slightly quieter, and it's tuned for trail riding where maximum power isn't the priority. Still plenty capable, just a different tool for a different job.
Both motors run quieter than 45 dBA, which means you're not announcing yourself to every hiker on the mountain. That matters more than most spec sheets give it credit for.
The Battery Situation
This is where things get interesting. Avinox isn't doing a one-size-fits-all battery anymore. They've built three options that let bike manufacturers design around different priorities.
The FP700 is a 700Wh integrated pack that weighs 3.18kg and hits 220 Wh/kg energy density. That's a high number. It means more range for less weight, which translates directly to how the bike handles on the trail.
The RS800 is an 800Wh removable battery at 4kg. Removable matters for a couple of reasons: you can charge it off the bike, and you can swap it trailside if you carry a spare. It also fast-charges to 80% in about an hour and fifteen minutes, which is genuinely useful if you're doing back-to-back rides or charging over lunch.
The RS600 is a lighter 600Wh removable option at just under 3kg. Here's the clever part: it can mount externally as a second battery on bikes designed for dual-battery setups. So you could theoretically run an 800Wh primary plus a 600Wh extender for 1,400Wh total. That's all-day riding without even thinking about range.
Smart Features That Actually Matter
Most of the smart features on eMTBs are things you set up once and forget about. The Avinox system has a few that are genuinely worth mentioning.
Heart rate-based assist adjustment is the one that caught our attention. The motor adjusts its output based on your heart rate in real time. If you're redlining on a climb, it gives you more help. If you're cruising, it backs off. The result is more consistent effort across varying terrain, which means you ride longer before you bonk.
Apple Find My integration is built in. If your bike gets stolen from a trailhead, you can locate it the same way you'd find your AirPods. Simple, useful, no subscription required.
The OLED displays are sharp and include turn-by-turn navigation. Not a game changer for your home trails, but useful for exploring new areas or following a downloaded route without stopping to check your phone.
What This Means on the Trail
Specs are specs. What riders care about is feel. And the M2S, from what we've seen so far, delivers a ride experience that's noticeably different from the previous generation of motors from any manufacturer.
The power is there when you need it, but it doesn't feel aggressive or jerky. The torque curve is smooth enough that technical climbing feels natural rather than like the bike is trying to launch you over the bars. And at 2.6kg for the motor, bike manufacturers can build around it without the bike feeling like a tank.
The noise level is also worth calling out. Under 45 dBA means you hear the trail, not the motor. On a quiet morning ride through the trees, that's the difference between feeling like you're mountain biking and feeling like you're operating machinery.
We're Already Riding It
The Mondraker Zendit is one of the first production bikes running the Avinox M2S, and we've got all three builds live on our site right now. Full carbon frame, 165mm rear travel, mullet wheel setup, and the M2S motor with an 800Wh battery. It's a purpose-built electric enduro bike, and it's one of the most capable eMTBs we've ever put on the floor.
If you want to see what the M2S looks like in a complete build, check out our full Zendit review and the individual product pages:
The Bottom Line
The Avinox M2S isn't just another motor update. It's a legitimate shift in what's possible on an electric mountain bike. More power, better battery options, smarter integration, and a ride feel that respects what mountain biking is supposed to be about.
The eMTB motor landscape just got a lot more competitive, and that's good for every rider. Whether you're shopping for a new bike right now or just keeping tabs on where the technology is heading, the M2S is the benchmark everyone else is going to be measured against for a while.
Got questions about the Avinox system or the Zendit? Reach out. We're happy to talk bikes.
