TREK Powerfly FS+ 4 EU S 27.5 Mercury/Dark Web
48614, Mercury/Dark WebElectric Bike 2025
Ready to ride
The bike is always professionally tuned and ready to go.
We will be happy to advise you
We provide expert advice on selection and configuration.
Free warranty inspection
Free warranty inspection after driving 200–500 km
Official TREK Store
Lifetime warranty on the frame, Crash Replacement, Carbon Care.
Powerfly+ FS 4 is a high-performance full-suspension mountain e-bike for demanding adventures. The Alpha Platinum aluminium frame has RockShox Deluxe suspension (120mm rear, 120mm front) to smooth out bumps. The 10-speed Shimano CUES drivetrain ensures easy shifting and low maintenance. The value-priced Tektro Gemini SL 4-piston hydraulic disc brakes are reliable.
You're looking forward to exploring your surroundings and want a powerful, fully equipped mountain e-bike that lets you do it. You want the advantage of a full-suspension mountain bike that handles rough trails and easy singletrack playfully. But you're not looking to hit rocky surfaces or jump trails.
- The Powerfly FS+ delivers the powerful support you crave on high mountain climbs, confident comfort on descents, and a high-capacity battery for off-road excursions.
- The Bosch Performance Line CX motor delivers ample torque for steep, demanding climbs. It can be easily controlled with the Purion 200 controller and customized in the eBike Flow app.
- The integrated RIB 2.0 battery is easy to remove for travel and storage and you won't even know you have it while riding.
- Want even more support? In the Bosch e-Bike Flow app you can set the torque to 100 Nm and the peak power to 750 W.
- It is compatible with additional Bosch PowerMore batteries. The 600Wh battery can be upgraded to the more powerful 800Wh version to explore even greater distances. Both parts can be fitted by your dealer.
Explore unexplored trails on the Powerfly+ FS 4. This capable and powerful mountain e-bike lets you soar up hills and tackle downhills with an ear-to-ear grin. The full suspension setup smooths out bumps and increases confidence when riding in the mountains or just around town.
New RIB 2 battery.0 |  |
 | Extend your ride |
Lightweight, quiet motor |  |
 | Huge range for awesome rides |
Customise your bike to your own requirements |  |
 | Bosch eBike Flow App |
Active Braking Pivot |  |
 | Shimano CUES |
In our e shop you will find cycling equipment from TREK such as cycling jerseys, kneesocks, trunks, cycling computers, bike bottles, rain jackets and thousands of other small items. In bikes we offer a comprehensive range which includes mountain bikes, trekking bikes, bmx bikes and kids bikes.
TREK is headquartered in Waterloo, Wisconsin. The family-owned business was founded by Richard Burke in 1976, starting out in a small steel bicycle factory with just five employees. Within a few short years, the company caught on to bicycle trends and continued to grow. In the early 1990s, it began producing bicycles in a then-new material - Carbone. Today, TREK sets the trends in bicycle development and is also considered a leader in the processing of Carbone. Its proprietary processing technology, called OCLV, has been applied in production with many innovations for more than 17 years. TREK bikes have celebrated success at major world races and have been associated with names such as Lance Armstrong, Alberto Contador, Chris Lieto, Roland Green, Chris Eatough, Andrew Shandro and Travis Brown. TREK is a premium brand you can always rely on.
Frame | |
|---|---|
| Frame | Alpha Platinum aluminum, removable integrated battery (RIB 2.0), tapered head tube, internal cable routing, Motor Armor protection, adjustable headset angle, adjustable Mino Link geometry, adjustable lever ratio, 34.9 mm seatpost, ABP, UDH, rack and fender mounts, Boost 148, 120 mm travel. |
| Fork | RockShox Recon Silver RL, Solo Air, Motion Control damping, lockout, tapered steerer, 42 mm offset, Boost110, Maxle Stealth 15 mm, 130 mm travel. |
| Maximum compatible fork travel | See service manual |
Wheelset-rims | |
| Front hub | Shimano TC500, alloy, Centerlock, 110 x 15mm thru axle |
| Rear hub | Shimano TC500, alloy, Centerlock, 148 x 12mm thru axle. |
| Rear quick release | Bontrager Switch thru axle, removable lever. |
| *Rim | Size: S, M, L, XL Bontrager Line TLR 30, tubeless-ready, 28 holes, Presta valve. |
| Size: S, M, L, XL Bontrager Line TLR 30, tubeless ready, 32 holes, Presta valve. | |
| Spokes | 14 g, stainless steel, black. |
| *Tire | Size: S Bontrager Gunnison Pro XR, tubeless ready, wire bead, 60 tpi, 27.5 x 2.40 inches. |
| Size: M, L, XL Bontrager Gunnison Pro XR, tubeless ready, dual compound, aramid bead, 60 tpi, 29 x 2.40 inches. | |
| Tire component | Bontrager TLR sealant, 6 oz. |
| Rim tape | Bontrager TLR |
| Maximum tire size | Frame: 29 x 2.50 inches (S: 27.5 x 2.50 inches), Fork: See manufacturer. |
E-system | |
| Battery | Bosch PowerTube 600Wh, smart system |
| Charger | Bosch standard 2A, 230V, smart system. |
| Cycle computer | Bosch Purion 200. |
| Motor | Bosch Performance Line CX, maximum speed 32 km/h (20 mph) (25 km/h (15 mph) in the EU and APAC). |
Drive | |
| Gears | Shimano U6000, 10 speeds. |
| Rear derailleur | Shimano CUES U6000 GS. |
| Crankset | FSA Bosch CK-220, 36-tooth chainring, length 165 mm. |
| Chainring | FSA, 36 teeth, steel |
| Cassette | Shimano CUES LG300, LINKGLIDE, 11-48, 10 speeds. |
| Chain | Shimano LG500, 9/10/11 speeds. |
| Pedal | VP-536, nylon platform |
| Maximum chainring dimensions | 1x: 38 teeth |
Components | |
| Saddle | Bontrager Verse P3, steel rails. |
| *Seatpost | Size: S Bontrager Line dropper seatpost, 100 mm travel, MaxFlow, internal routing, 31.6 mm, 310 mm length. |
| Size: M, L, XL Bontrager Line dropper seatpost, 170 mm travel, MaxFlow, internal routing, 31.6 mm, 450 mm length. | |
| Handlebars | Bontrager Comp, alloy, 31.8 mm, 40 mm bend, width 780 mm. |
| Grips | Bontrager XR Trail Comp, nylon Lock-On |
| Stem | Bontrager Comp, 31.8 mm clamp, Blendr compatible, 7 degrees, length 50 mm |
| Headset | FSA IS-2, 1-1/8 inch top, 1.5 inch bottom. |
| Brake | Tektro Gemini SL, four-piston hydraulic brake. |
| Brake rotor | Tektro, centerlock, 203 mm. |
| Disc dimensions | Maximum brake disc size – frame: 220 mm, min. 180 mm, fork: see manufacturer. |
Accessories | |
| Mudguard | Mudguard for Trek 27.5". |
Weight | |
| Weight | M ‒ 24.58 kg (with TLR sealant, without tubes) |
| Weight limit | The bike has a maximum total weight limit of 136 kg (combined weight of bike, rider, and cargo). |
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