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The Powerfly FS+ 4 from Trek is a premium electric mountain bike that combines full suspension comfort with powerful electric assistance to create a versatile e-MTB ready for both city streets and all-day adventures on trails and mountains. With its durable Alpha Platinum Aluminium frame and balanced 130mm front and 120mm rear suspension, this bike delivers the confidence you need to explore further and tackle more challenging terrain.

Central to the capabilities of the Powerfly FS+ 4 is Bosch's renowned Performance Line CX motor, up to 100Nm of torque to help you tackle steep climbs with ease. The sizeable 800Wh PowerTube battery integrates cleanly into the downtube and provides ample range for extended explorations, while the clever RIB 2.0 (Removable Integrated Battery) system allows for easy battery removal when needed.

The RockShox suspension package works diligently to enhance your ride experience, with the Recon Silver fork featuring Solo Air spring and Motion Control damper up front, paired with a RockShox Deluxe Select R shock at the rear. This combination effectively absorbs trail impacts and maintains traction across varied terrain, giving you the control and comfort to ride with confidence.

Shifting duties are handled by the reliable Shimano Cues 10-speed drivetrain, offering clean and consistent gear changes even when under power. The wide-range 11-48t cassette provides plenty of gearing options for both challenging climbs and faster descents, while the FSA crankset with 36-tooth chainring ensures optimal power transfer.

When it comes to stopping power, the Tektro Gemini SL 4-piston hydraulic disc brakes provide reliable performance and excellent control, giving you the ability to control your speed on demanding descents. Large 203mm rotors offer improved heat dissipation and enhanced braking power when you need it most.

The Powerfly FS+ 4 rolls on high-quality Bontrager Line TLR 30 tubeless-ready wheels paired with durable Bontrager Gunnison Pro XR 2.4" tyres, offering an excellent balance of grip, comfort and puncture resistance. The Bontrager Line dropper post allows for quick saddle height adjustments on the fly, helping you optimise your position for climbing efficiency or descending control.

Whether you're seeking to extend your trail riding adventures, conquer new mountain passes, or simply enjoy the added assistance on your regular routes, the Trek Powerfly FS+ 4 delivers a capable and confidence-inspiring e-MTB experience. With its thoughtful component selection, robust frame, and powerful Bosch drive system, this bike opens up new possibilities for riders of all abilities.

Key Features Of The Trek Powerfly FS+ 4 Gen 4

• Motor: Bosch 2025 New Performance Line CX Smart System, Gen 5 
• Battery: Bosch PowerTube 800Wh, smart system, removable integrated battery
• Display: Bosch Purion 200
• Frame: Alpha Platinum Aluminium, tapered headtube, guided internal routing, Motor Armor, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, 34.9mm seat tube, ABP, UDH, rack and mudguard mounts, Boost 148, 120mm travel
• Fork: RockShox Recon Silver, Solo Air spring, Motion Control damper, lockout, tapered steerer, 42mm offset, Boost110, Maxle Stealth, mudguard mounts, 130mm travel
• Rear shock: RockShox Deluxe Select R, 210x50mm
• Brakes: Tektro Gemini SL 4 piston hydraulic brake
• Rear derailleur: Shimano Cues U6000 GS
• Shifters: Shimano U6000, 10-speed
• Tyres: Bontrager Gunnison Pro XR, Tubeless-Ready, 60 tpi, aramid bead 29x2.40" (wire bead 27.5x2.40" on size S), with Bontrager TLR sealant 180ml / 6oz
• Seatpost: Bontrager Line Dropper, 170mm travel (100mm on size S), MaxFlow, internal routing, 31.6mm

What's Included

• Manual, keys and charger included
• Complimentary pedals supplied
• Built, configured and tested by an approved technician
• Full technical handover and ongoing support if required
• We offer a free follow up service at 175 miles