Amflow PX Review

With the Amflow PX, a new player hits the scene and puts the established competition under serious technical pressure. While many brands get lost in incremental updates, Amflow delivers a combo of record-setting weight and motor performance that was previously considered physically impossible.

The scale doesn’t lie: at 20.9 kg in size L, the Amflow PX redefines the weight class of full-power e-MTBs. For comparison, bikes like the Pivot Shuttle AM, at around 22 kg, have so far been considered extremely light. Most competitors like the Specialized Levo, the Orbea Wild, or the YT Decoy tend to land more in the 23 to 24 kg range.

What makes this weight especially noteworthy is that Amflow isn’t playing games. Instead of relying on fragile lightweight tires, the bike rolls on burly Schwalbe radial tires that alone tip the scales at almost three kilos.

The key to this success is the frame. With a claimed weight of just 2,400 g, the carbon chassis is nearly on par with modern enduro bikes without a motor. A look inside the frame reveals a build quality that backs up the premium claim. The fiber layup is smooth and free of excess resin, which not only saves weight but also boosts structural integrity.

In our in-depth lab and trail analysis, the Amflow PL impresses with a level of manufacturing quality that’s not always a given in the lightweight e-MTB segment. While cheaper carbon frames often disappoint with messy internal layups, a look inside the Amflow frame reveals flawless workmanship with no resin pooling or stray fibers. The classic routing—hoses and cables entering at the head tube rather than through the headset—also scores big for wrench-friendly serviceability, a design choice that keeps maintenance manageable even for less experienced home mechanics. The only initial downside was the lack of foam sheathing around the head tube area, which hurt the acoustics at first; a simple upgrade fixed it, resulting in confident, quiet composure on the descents.

Beyond looks, our stiffness-bench data backs up the on-trail impression of standout steering precision. In the central frame-stiffness test via bottom-bracket load input, the Amflow clearly outclasses much burlier competitors: bikes like the Specialized Levo R or the Haibike Hybe show 26 percent more deflection. That the Amflow hits a level usually reserved for full-send bruisers like the Specialized Levo 4 or hefty aluminum builds—despite its low weight—comes down mainly to its well-thought-out rear-end design. For example, the Horst Link bearings are supported on both sides in the chainstay, effectively minimizing torsional flex. Paired with a purpose-tuned rear suspension that delivers plenty of support and healthy end-stroke progression, the Amflow translates rider inputs into direction changes without any noticeable lag or vague hinge feel.

The heart of the PX is the Avinox M2S system. With a peak output of up to 1,300 watts in Boost mode, the motor drops every current competitor. In our torture test under extreme conditions, the thermal management proved excellent. Despite the massive power delivery, the integrated cooling fins never forced the system into heat-induced derating at any point.

When it comes to range, the 700 Wh battery delivers solid numbers. In our standardized test cycle, the bike managed just under 1,900 meters of elevation gain. The last 150 of those are ridden with reduced power only. The real kicker, though, is the time factor: the Amflow PX knocks out 1,000 meters of climbing in just 17 minutes—a number conventional systems don’t even come close to. For long-haul riders, Amflow also offers a 600 Wh range extender.

Out on the trail, the Amflow PX benefits massively from its mullet setup and low center of gravity. The 27.5-inch rear wheel, paired with the bike’s low overall weight, delivers next-level agility you normally only get from light e-MTBs. It pops effortlessly over root mats and willingly carves through tight switchbacks.

On the climbs, though, the motor shows its claws. That huge power demands an active weight shift up front, but then rewards you with climbing chops that go head-to-head with current benchmarks like the Santa Cruz Vala. In steep sections, we recommend running the long chainstay setting via the flip chip to keep the sweet spot between traction and climbing performance dialed.