Aluminium full-suspension electric mountain bike Trek Powerfly+ FS 6 grey: Bosch CX 800 Wh, Eagle 70, 25.08 kg

Trek Powerfly+ FS 6 Lithium: a tough Bosch full-suspension bike for riding often

Designed for frequent rides, the Trek Powerfly+ FS 6 combines an Alpha Platinum aluminium full-suspension frame, a Bosch CX motor, an 800 Wh battery, a Fox Rhythm 36 fork and a SRAM Eagle 70 T-Type drivetrain. It runs 120 mm at the rear and weighs 25.08 kg in size M according to Trek. The Lithium/Trek Black colourway pairs a light silvery grey with a deep black.

Technical specifications

Who is it for?

Do you ride several times a week, sometimes early in the morning before work, sometimes on a big loop on Sunday? This Powerfly+ FS is built to handle that pace without needing the workshop every three weeks. It is also a sound base for gaining confidence on descents.

The LVR workshop view

The UDH hanger, discreet but valuable. The UDH hanger, an open derailleur mounting standard, is this frame's discreet asset: it takes the SRAM T-Type drivetrain directly with no intermediate hanger, and is easy to replace after a knock. For the rest, the Alpha Platinum aluminium, the motor protected by the Motor Armor cover and the removable RIB 2.0 battery form a tough base, built to be ridden often.

Put simply: this FS 6 gets tougher up front with a 140 mm Fox 36 from size M and a 0° stem, while keeping 120 mm at the rear. It weighs the same as the FS 6 with Fox AWL fork and Shimano drivetrain (25.08 kg in M): the difference is in the ride, not on the scales.

The four-piston Shimano brakes and their 203 mm rotors deliver consistent power, even on the long descents of the Espinouse. Shimano mineral oil is easy to maintain, and we recommend an annual bleed to keep a consistent lever feel. When summer dust sticks to the pads, simply cleaning the rotors with alcohol is often enough to restore the original bite.

The SRAM XS-1270 10-52 cassette lets you climb steep slopes while keeping a comfortable cadence, which optimises the assist and spares the chain. When accelerating out of a hairpin, it is better to shift in advance than to change gear under full load. The assist remains compliant with European rules, limited to 25 km/h and 250 W nominal, and updates are done via the Bosch eBike Flow app.

Which Powerfly+ FS should you choose?

Our take: compared with the FS 5 (24.58 kg in M), this FS 6 adds 500 g but moves up to Fox suspension and a T-Type drivetrain. The FS 8 with XT Di2 (24.88 kg) adds wireless shifting and the Kiox 300 display.

Your questions

Why buy from LVR Cycles? Our Béziers workshop handles Fox suspension servicing, Shimano brake bleeds and Bosch motor diagnostics, with a service schedule tailored to how often you ride.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.