This bike has far exceeded my expectations for an electric mountain bike. Yes, it is heavy, but it is so powerful that the weight honestly does not matter much once you are riding it. It feels rugged, capable, and strong enough to handle almost anything I throw at it.
I have ridden it through everything from -30°C winter conditions to mud, snow, sand, water, and rough terrain, and it has handled it all flawlessly without hiccups. The Ultra motor has an incredible amount of torque, and the bike feels like a tank in the best way possible.
That said, there are negatives with anything. The main weak point on this bike, in my opinion, is the rear hub. The stock Quanta pawl-style hub is not ideal for the torque of the Bafang Ultra motor. Mine suddenly grenaded and left me stranded, so I strongly recommend upgrading to a star ratchet rear hub if you ride hard or use the motor’s torque aggressively.
The second thing I would recommend is not really a Biktrix design issue, but more related to the Bafang Ultra motor itself. For maximum longevity, I believe many Ultra motors come under-greased from the factory. I regreased mine with Mobilgrease 28 aircraft grease at around 500 km, and I am very glad I did because mine appeared under-greased. I believe this maintenance can greatly improve the motor’s lifespan.
If you own this bike, I also recommend having a few proper tools: a torque wrench for correct torque specs, the Ultra motor chainring removal/installation tool, crank removal tools, and basic bike tools. I relube my chain about every 100 km, and I use medium-strength Loctite on most bolts where appropriate.
Overall, I am extremely happy with the bike. Between the performance, durability, power, and Biktrix support, I honestly believe this is one of the best e-bikes you can buy. Biktrix support has been a big part of why I am giving this bike 5 out of 5 stars. Compared to other e-bike companies on the market, I believe Biktrix stands out.
