Aluminium full-suspension electric mountain bike Trek Powerfly+ FS 4 orange: Bosch CX 600 Wh, CUES, 25.28 kg

Trek Powerfly+ FS 4 Pennyflake: an e-MTB that is easy to live with and maintain

With its 10-speed Shimano CUES LinkGlide drivetrain, the Trek Powerfly+ FS 4 Gen 4 is built for durability: an aluminium full-suspension electric mountain bike with a Bosch CX motor, a 600 Wh battery, 120 mm of rear travel and 130 mm up front. Trek quotes 25.28 kg in size M. The Pennyflake/Black Olive colourway combines a sparkling copper orange with an almost black olive green, a shade reminiscent of the garrigue in autumn.

Technical specifications

Who is it for?

For the mountain biker who rides a lot, all year round, and prefers a bike that goes the distance between services over a high-strung drivetrain. It will also appeal to anyone who maintains their own bike and wants parts that are easy to find.

The LVR workshop view

Alpha Platinum, the aluminium behind the FS 4. Trek uses its Alpha Platinum aluminium for this frame, one notch below the Alpha NEXT Platinum of the alloy Fuel+ models. On this FS 4, two frame details matter day to day: the RIB 2.0 battery comes out in one piece for charging at home, held by a second latch that stops it from falling out, and the Motor Armor skid plate protects the Bosch motor from stones flicked up under the bottom bracket.

Put simply: the FS 4 puts the money where it matters on a first full-suspension e-MTB, namely the Bosch CX motor, front and rear suspension and four-piston brakes. The 10-speed CUES drivetrain and 600 Wh battery stay simple; they are also the two areas that set this version apart from its bigger siblings.

A powerful mid-drive motor wears out chains and sprockets faster than a conventional mountain bike. The CUES LinkGlide range was designed with this in mind: thicker teeth, an 11-48 cassette and an LG500 chain that last much longer under the torque of the Bosch CX. The 36-tooth chainring on 165 mm cranks keeps good ground clearance on the rock slabs of the Montagne Noire.

The assist, limited by European regulations to 25 km/h for 250 W rated, is adjusted via modes from the Purion 200 controller. On the workshop side, we recommend checking chain wear every few hundred kilometres and servicing the RockShox Recon fork every season, especially after a dusty summer.

Which Powerfly+ FS should you choose?

Our take: the FS 4 is the only 600 Wh Powerfly+ FS without commuting kit, at 25.28 kg in M. If you value consistency over performance, its CUES drivetrain is a better bet than a more fragile 12-speed; the FS 5 at 24.58 kg remains the next step up.

Your questions

Why buy from LVR Cycles? In our Béziers workshop, we handle drivetrain maintenance, RockShox servicing and Bosch diagnostics for your Powerfly+ FS 4, with CUES parts in stock.

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