The Specialized Turbo Levo 4 Pro and Amflow PX Carbon Pro are full-power eMTBs built around distinctly different system priorities. The Levo 4 Pro pairs an 840Wh battery with a FOX 38 chassis, Specialized GENIE suspension, and the established MasterMind ecosystem. The PX Carbon Pro combines the Avinox M2S Drive Unit with a lower listed complete-bike weight, 700Wh battery, and a highly adjustable chassis.
For a consistent comparison, this guide uses the Turbo Levo 4 Pro and Amflow PX Carbon Pro as the primary reference builds. Specifications elsewhere in the Levo 4 lineup vary, particularly on the S-Works model, so model-specific numbers should not be treated as specifications for every Levo 4. Specialized currently lists the Levo 4 Pro with 105 N·m of torque, 810 W of power, an 840Wh battery, 160mm front travel, and 150mm rear travel.
Specialized Levo 4 vs Amflow PX Carbon Pro at a Glance
The largest differences are found in motor output, complete-bike weight, battery capacity, fork chassis, and geometry adjustment.
| Specification | Specialized Turbo Levo 4 Pro | Amflow PX Carbon Pro |
| Motor | Specialized 3.1 | Avinox M2S |
| Maximum Motor Output | 810 W | Up to 1500 W peak |
| Torque | 105 N·m | 130 N·m nominal, up to 150 N·m peak |
| Battery | 840Wh | 700Wh |
| Front / Rear Travel | 160 / 150mm | 160 / 150mm |
| Fork | FOX FLOAT 38 Factory, GRIP X2 | FOX 36 Factory, GRIP X2 |
| Rear Shock | FOX FLOAT X Factory with GENIE | FOX Float X Factory |
| Stock Wheel Setup | 29-inch front / 27.5-inch rear | 29-inch front / 27.5-inch rear |
| Listed Weight | 23.94 kg / 52 lb 12.5 oz, size S4 | 20.6 kg / 45.4 lb, size M, tubeless setup |
| Display | 2.2-inch MasterMind T3 | 2-inch Avinox OLED Control Display |
| Geometry | Adjustable | Up to 40 theoretical configurations |
The weight figures are not a controlled size-for-size comparison. Specialized measures the Levo 4 Pro in S4, while Amflow’s 20.6 kg figure is based on an M-size PX Carbon Pro with a tubeless setup. Amflow also notes that actual weight can vary with configuration, manufacturing differences, and added equipment. Specialized gives a similar qualification for its published weight.
Motor and Climbing: Avinox M2S vs Specialized 3.1
The PX Carbon Pro provides substantially more peak motor output on paper, while the Levo 4 Pro uses a lower-output Specialized 3.1 system tuned around full-power trail riding.
The Avinox M2S is specified at 130 N·m nominal torque, up to 150 N·m peak torque, and up to 1500 W peak power. Amflow identifies 1500 W as peak output rather than continuous output, an important distinction when comparing eMTB motors.
The system’s highest output is also time-limited. Amflow states that Boost mode can operate for a maximum of 60 seconds before returning to the previously selected riding mode.
The Levo 4 Pro’s Specialized 3.1 motor is rated at 105 N·m and 810 W. Specialized combines the motor with Micro Tune and Dynamic Micro Tune, allowing riders to adjust support rather than relying on a single maximum-assistance setting.
For steep technical climbing, the PX therefore offers considerably more available torque and short-duration power headroom. That can matter when restarting on a steep grade, accelerating over a ledge, or maintaining assistance through a short high-load section.
Peak output alone cannot determine which eMTB climbs a particular trail faster or with more traction. Tire choice, gearing, cadence, rear suspension behavior, rider position, software calibration, and surface conditions all affect how effectively motor output reaches the ground.
The useful distinction is therefore straightforward: the PX Carbon Pro provides more motor-output headroom, while the Levo 4 Pro relies on a lower-output system with extensive rider tuning and traction-focused control.
Weight and Handling
Weight is one of the clearest chassis differences between these two eMTBs.
Amflow publishes a complete-bike weight of 20.6 kg for the M-size PX Carbon Pro in its specified tubeless test configuration. The same official product documentation makes clear that this figure can vary with size and setup.
Specialized lists the Levo 4 Pro at 23.94 kg in size S4, with actual weight also subject to frame size, color, and component variation.
Those manufacturer figures should not be converted into a precise same-size weight difference, but they do establish that the PX Carbon Pro is designed around a substantially lighter complete-bike platform.
Lower mass can reduce the effort required to lift the front wheel, reposition the bike, move through repeated direction changes, or handle the bike away from the trail. How noticeable that becomes while descending depends on geometry, suspension, wheels, tires, and rider technique.
The Levo 4 Pro uses a FOX 38 Factory fork, gravity-casing tires, carbon wheels, and a full-power trail chassis. The PX Carbon Pro instead uses a FOX 36 Factory fork as part of its lighter build.
This creates a meaningful purchase distinction without assuming one handling character is universally preferable. Riders who put a premium on keeping full-power eMTB weight down have a clear reason to consider the PX. Riders who prefer a more substantial fork chassis and are less concerned about complete-bike mass may favor the Levo’s approach.
Battery Capacity and Charging
The Levo 4 Pro offers more standard battery capacity, while the PX Carbon Pro combines a smaller battery with a high-output charging system and lower complete-bike weight.
The Levo 4 Pro carries an 840Wh battery. Specialized’s current Levo 4 platform also supports an optional 280Wh range extender, giving riders another way to add capacity for longer days.
The PX Carbon Pro uses an integrated 700Wh battery and ships with an Avinox 12A / 508W fast charger.
Amflow’s laboratory comparison states that charging the FP700 battery from 0 to 80 percent with the 508W charger is approximately three times faster than with its 168W charger under the same test conditions. That comparison is between two Avinox chargers, not between the PX and Levo charging systems.
For trail use, battery capacity should also be separated from claimed maximum range. Terrain, elevation gain, assistance mode, temperature, tire choice, rider weight, and riding speed can change real eMTB range considerably.
The Levo therefore has the advantage in installed energy capacity and optional range expansion. The PX takes a different system approach, balancing a 700Wh battery against lower listed bike weight and a 508W charger.
Suspension, Wheels, and Trail Setup
Both bikes use 160mm front travel and 150mm rear travel, but the component choices around that travel are different.
The Levo 4 Pro pairs a FOX FLOAT 38 Factory GRIP X2 fork with a FOX FLOAT X Factory shock using Specialized GENIE technology. It comes stock with a 29-inch front wheel and 27.5-inch rear wheel. Specialized also specifies SRAM Maven Silver four-piston brakes with a 220mm front rotor and 200mm rear rotor.
The PX Carbon Pro uses a FOX 36 Factory GRIP X2 fork and FOX Float X Factory rear shock. Its braking system uses Magura Gustav Pro four-piston brakes with 203mm rotors. The stock configuration is also a mullet setup with a 29-inch front and 27.5-inch rear wheel.
The fork distinction is more useful than simply repeating the identical travel figures. A FOX 38 uses a larger chassis than a FOX 36 and is commonly selected where front-end stiffness and aggressive descending support carry more weight. The FOX 36 helps keep the PX’s front end and overall package lighter.
Neither choice defines the complete descending performance of an eMTB. Suspension tune, geometry, tire construction, wheel stiffness, rider weight, and setup remain important.
Geometry Adjustment
The PX Carbon Pro provides unusually broad geometry adjustment for a full-power eMTB.
Amflow specifies five head tube angle settings, two bottom bracket height settings, and four chainstay length settings. Those adjustment points can theoretically create up to 40 geometry combinations.
The PX frame is also compatible with both 27.5-inch and 29-inch rear wheels, even though the Carbon Pro is supplied in a 29/27.5-inch mullet configuration.
This matters because head angle, bottom bracket position, rear-center length, and wheel size influence different aspects of chassis behavior. A rider can use those adjustments to change steering response, stability, pedal clearance, weight distribution, and rear-wheel behavior without changing the core frame.
The Levo 4 also provides adjustable geometry and uses Specialized’s S-Sizing system. Its standard Pro geometry uses a 64.5-degree head angle and 435mm chainstays, with S2 through S6 sizes currently offered in the U.S.
The distinction is not that one bike can be adjusted and the other cannot. The PX simply provides more published geometry combinations and rear-wheel configuration options.
Controls and Ride Interface
Both eMTBs integrate display, motor control, and ride data into the bike, but they use different cockpit designs.
The Levo 4 Pro uses the 2.2-inch MasterMind T3 color display with Specialized App integration. Its system supports motor tuning, ride data, and connected functions through the Specialized ecosystem.
The PX Carbon Pro uses a 2-inch OLED Control Display with separate left and right wireless controllers. Its Avinox system also supports ride settings and route-file import. Amflow specifies support for GPX, FIT, and TCX route files, while noting that offline navigation currently displays the route track without a full offline map.
This part of the comparison comes down primarily to interface preference. Specialized centers the experience around MasterMind and the Specialized App, while Amflow integrates the display, wireless controls, drive system, and connected functions through the Avinox platform.
Specialized Levo 4 or Amflow PX Carbon Pro: Which Should You Choose?
The PX Carbon Pro is the more relevant choice for riders who place motor-output headroom, lower complete-bike weight, and extensive geometry tuning high on their eMTB priorities. The Levo 4 Pro makes a stronger case for riders who prioritize battery capacity, optional range expansion, and a heavier-duty FOX 38-based front end.
The Amflow PX Carbon Pro combines up to 150 N·m of peak torque and 1500 W of peak power with a manufacturer-listed 20.6 kg M-size weight, a 700Wh battery, stock mullet wheels, and a chassis offering up to 40 theoretical geometry combinations. Its specification is centered on delivering high motor capability without moving into the weight range typical of many full-power platforms.
The Turbo Levo 4 Pro uses a lower-output 105 N·m, 810 W motor but carries an 840Wh battery, FOX 38 Factory fork, GENIE-equipped FOX Float X Factory shock, and Specialized’s MasterMind ecosystem. The wider Levo 4 platform also supports a 280Wh range extender.
For riders comparing these two eMTBs, the deciding question is less about which specification sheet contains the largest individual number and more about where you want the bike to place its system weight and capability. PX favors a lighter, highly configurable chassis with considerably higher peak motor output. Levo 4 Pro allocates more of the package toward battery capacity and a more substantial suspension build.