Trek Powerfly FS

The Powerfly FS has been Trek's volume full-suspension e-MTB since 2018 and is the trail-capable, do-everything sibling to the more aggressive Rail. Built around an aluminum frame with 120 mm rear and 130 mm front travel (latest Gen 4), it pairs ABP rear suspension geometry borrowed from the analog Fuel EX with the Bosch Performance Line CX motor — 85 Nm of torque in Gen 4 trim, and up to 100 Nm with the optional Race firmware. The Removable Integrated Battery (RIB) system lets riders pull the 600 or 800 Wh PowerTube out without tools. For 2025 Trek launched the Powerfly+ FS Gen 4 on the new Bosch CX Gen 5 platform, signaling the platform will continue evolving. The FS sits below Rail in price and travel, making it the practical pick for riders who want one bike for trail, gravel double-track, and bikepacking.