Trek claims that the current Powerfly lineup has become one of the most popular lines of their bikes in Europe. Now, that electricity is coming state-side. Touting similar benefits as other e-bike manufacturers, the Powerfly line will “allow riders to go farther, ride more often, and tackle more challenging terrain.” By offering both hard tail and full suspension bikes, the Powerfly lineup includes four different models with bikes for both men and women. Relying on the Bosch Performance CX drivetrain, the Powerflies will be cranking out 75Nm of extra torque and four levels of e-assist…
At the top of the line, the Powerfly FS 8 Plus builds a motor into a full suspension platform with 27+ tires and Trek’s ABP and EVO link suspension system. Set at 130mm of travel front and rear, the frame sees many of the same technologies as the new Fuel EX with Boost spacing, the Straight Shot down tube, and Knock Block frame defense steerer tube stop. The full bike will set you back $4,999 which includes a dropper post and 1×11 drivetrain. All of the Powerfly bikes are equipped with the Bosch Intuvia display and controller, Powerpack 500 or 400 Wh battery, and are limited to 20 mph.
The Powerfly 7 drops the price down the $3,999 by removing the rear suspension and adding 29″ wheels and tires. The Alpha aluminum frame adds additional protection for the motor, and is able to accept fenders, racks, and a kickstand. Built around a 100mm travel RockShox Reba RL fork with G2 geometry, the 7 also includes an XT 1×11 drivetrain and Bosch CX drivetrain limited to 20 mph of assist.
The Powerfly 5 will be available in both men’s and women’s models with different frames and gender specific touch points. Both include 100mm RockShox Recon Silver forks, a Shimano Altus/Alivio 1×9 drivetrain, and the Bosch CX motor with Powerpack 400 batteries limited to 20 mph of assist. The entry point for the Powerfly line up, the 5 and 5 WSD will both sell for $2,999.
While the women’s Powerfly will only be available in 15.5 and 17.5″ frames, the rest will include a full size range from 15.5 to 21.5″. Check out Trekbikes.com for complete spec, or the FAQ below from Trek for more info on their Powerfly line or e-bikes in general.
From Trek:
Powerfly FAQ
Isn’t riding a pedal-assist bike cheating?
If having more fun, riding farther, riding new places, getting new people into mountain biking is cheating, then yes.
Where’s the throttle?
Powerfly is a pedal-assist mountain bike. It amplifies the power the rider puts in while pedaling. If the rider isn’t pedaling, the bike is not assisting. It is not self-propelled.
Where can I legally ride this bike?
Regulations on where eMTB bikes can be ridden legally vary by state and whether the land is federally, state, county or privately owned. Trek and IMBA promote a position that safely guides eMTB users towards trails that won’t be questionable: “E-MTBs are approved for use on trails that allow pedal-assist or motorized vehicles. You are responsible for knowing and complying with all regulations and use laws. If uncertain about trail status, check with local parks management or consult your retailer.“
Where can I learn more about eMTB regulations?
People For Bikes has a well-curated list of resources and explanations surrounding eMTB: www.peopleforbikes.org/e-bikes
Do eMTB’s have any more impact on trails than traditional mountain bikes?
“Not significant.” IMBA conducted a study of Type 1 (low speed pedal assist) mountain bikes, like the Powerfly, and found that “the impacts from Class 1 eMTBs and traditional mountain bicycles were not significantly different, while motorcycles led to much greater soil displacement and erosion.” In short, riding poorly constructed mountain bike trails or riding trails while still wet will have much more impact than eMTB riding. You can find the full study on People For Bike’s e-bike resources.
How fast can it go?
It’ll go as fast as your legs turn the pedals. However, the pedal assist cuts out at 20mph.
Can I ride the bike in the rain or wet conditions?
Yes. The Bosch system, including the battery, is weatherproof and will function fine in wet conditions. The motor is further protected from mud and rocks by Trek’s exclusive Motor Armor that also acts as a skid plate over large obstacles. However, none of the Bosch components should ever be submerged in water or cleaned with a high-pressure hose or power washer.
How does the Bosch Performance CX Motor differ from other units?
The Performance CX motor is designed for the rigors of off-road use with 75Nm torque for enhanced responsiveness and capability on steep or challenging terrain. The drive unit is slightly smaller than other motors, giving it better obstacle clearance. The mid-mount placement of the motor ensures the best weight distribution for balance and control.
How long does the battery last?
The 500Wh battery has an approximate range of 170km in Eco mode, and 60km in Turbo mode. Actual range will depend on various factors such as terrain type, incline grade, and individual riding style.
How long does it take to fully charge the battery?
From empty to fully charged will take about 4.5 hours. From empty to 50% charged will take only 2 hours.
Does the battery require any special care?
The battery should never be opened, as doing so not only voids all warranties, but also poses the risk of uncontrolled thermal reactions. Use only the provided Bosch eBike charger, which is specifically matched to the Bosch battery and has the right software for optimal charging and maintenance of the battery. Using any other charger will void the warranty and also risk malfunctions or reduced lifespan. Lithium-ion batteries have neither memory nor self-discharge effects, so the battery can be partially recharged at any time without affecting the service life.
How many power modes are there?
The Bosch Performance CX system allows riders customize the amount of power produced by the motor by choosing one of four modes:
- Eco (50% assist): maximum efficiency for maximum range
- Tour (120% assist): steady support for long rides
- Sport (210% assist): powerful support for more aggressive rides
- Turbo (300% assist): even more power for support up to maximum cadence (120 rpm) or maximum speed (20 miles/hr) for the most aggressive rides
Will the display still function when pedal assist isn’t being used?
Yes. The Intuvia display units will still offer all on-board computer functions even when the pedal assist modes are inactive.
What makes Powerfly FS better than other pedal-assist mountain bikes?
Here at Trek, we know how to make great-riding mountain bikes, and Powerfly FS is no exception. These bikes get the same proven frame technology as the rest of our lineup, including ABP, EVO link, Boost148, Mino Link, and our new Straight Shot down tube with Knock Block frame defense for an optimal stiffness-to-weight ratio. All of this adds up to a true mountain bike with the added benefit of pedal assist.
Why do some of the bikes have 27.5+ tires?
We gave the Powerfly 8 FS premium spec with 27.5 x 2.80” tires mounted to 40mm rims. This setup offers incredible stability and traction, which enables riders to get the maximum benefit from the added torque and power provided by the motor.
