Powerfly FS+ 4 Gen 4

Equipped with full suspension, Bosch Performance CX power and a 600Wh battery, the Powerfly FS+ 4 Gen 4 offers smooth, supportive riding for exploring everything from forest trails to rough back lanes and hilly commutes.Key Features: Alpha Platinum Aluminium frame with 120mm travel and ABP suspension RockShox Recon Silver RL fork, Solo Air spring, 130mm travel RockShox Deluxe Select rear shock with 120mm of smooth trail travel Shimano CUES 10-speed drivetrain with LINKGLIDE durability Tektro Gemini SL 4-piston hydraulic disc brakes for powerful braking 29" Bontrager Line TLR 30 tubeless-ready wheels with 2.4" tyres Bontrager Line dropper post and mounts for racks, lights and mudguards Available with 0% APR financeDrive Information: Bosch Performance Line CX motor with 120Nm of torque Bosch PowerTube 600Wh smart system battery Bosch Purion 200 display with smart system connectivityThe Trek Powerfly FS+ 4 Gen 4 is designed for riders who want full-suspension comfort paired with powerful pedal-assist technology to go further and ride longer. Whether you're exploring forest singletrack, cruising rugged gravel routes, or simply looking to smooth out your daily commute, this capable e-MTB blends support, control and versatility into one trail-ready package.At its core is a Bosch Performance Line CX motor, providing 120Nm of torque and smart system integration for intuitive, natural-feeling pedal assist. It’s paired with the new Purion 200 display and remote, giving you simple access to ride data and power modes, while also connecting to Bosch’s eBike Flow app for updates, ride customisation and route tracking.Power comes from a 600Wh Bosch PowerTube battery, secured in Trek’s RIB 2.0 (Removable Integrated Battery) system. This keeps things quiet, protected and easy to remove for charging or storage. Need more range? It’s PowerMore compatible, or you can upgrade to an 800Wh battery for even longer rides.The full-suspension Alpha Platinum Aluminium frame uses Trek’s ABP (Active Braking Pivot) rear suspension platform, helping maintain traction and control under braking. With 130mm front and 120mm rear travel, the RockShox Recon Silver RL fork and Deluxe Select shock soak up trail chatter and give confidence over roots, rocks and ruts.The Shimano CUES 10-speed drivetrain delivers reliable shifting with LINKGLIDE durability, ideal for the demands of e-MTB torque and off-road terrain. Stopping power is handled by Tektro Gemini SL 4-piston brakes, giving great modulation and control on descents and in mixed conditions.29” Bontrager Line TLR 30 wheels are paired with Bontrager Gunnison Pro XR 2.4” tyres, offering a blend of grip, speed and puncture protection. The included dropper post helps your rider stay agile and confident on technical trails.With mounts for a rack, lights, mudguards and a kickstand, the Powerfly FS+ 4 Gen 4 is as ready for bikepacking and commuting as it is for mountain trail adventures. It’s a truly versatile full-sus e-MTB that makes exploring more accessible.Bosch Performance Update 2.0Bosch have dropped a fresh update for the Performance Line CX and CX-R motors, and it’s a big one for riders who want more punch on the trails. The update is available for the latest generation motors with the codes BDU384Y and BDU386Y, and it can be installed straight from the Bosch eBike Flow app. Nice and easy.Once you’ve downloaded Performance Update 2.0, you can crank the motor up to a huge 120 Nm of torque, with up to 600% support and 750 watts of peak power. Bosch have also tweaked things so the motor can hold that power for longer when the riding conditions allow.The 600% support figure only kicks in between 0 and 15 km/h, so it’s all about helping you power up steep climbs and tricky sections. The maximum assisted speed stays the same at 25 km/h.As with previous Bosch updates, you can still customise the motor settings in the app to suit your riding style. Whether you want maximum power for steep tech climbs or a more natural feel on longer rides, you can dial it in how you like it.Performance Update 2.0 is available for all CX Gen 5 and CX-R Gen 5 motors. It also brings Extended Boost (Bosch Overrun) and support for the new drivetrain tensioner system, which helps reduce lag when you get back on the pedals. Bosch are also adding more features and connectivity options, including Garmin integration and new power supply options.One thing worth keeping in mind — more power means more stress on drivetrain components, so increased wear is expected over time. If you’re unsure about compatibility, servicing or upgrading components, get in touch with us and we’ll be happy to help.