Opening Hours:
Monday - Friday: 09:00 - 17:30
Saturday: 09:00 - 17:00
Sundays and Bank Holidays: Closed
The 2026 Powerfly FS+ 4 800Wh Gen 5 L MERCURY/DARK WEB is available at the following locations.
The item will be transferred to the location you choose during checkout.
If the item is not currently available to view at your desired location, please call your nearest store to arrange for it to be transferred.
The Powerfly FS+ 4 is a full-power full suspension electric mountain bike for taking on alpine adventures. Its Alpha Platinum Aluminium frame pairs with a RockShox Deluxe suspension package (120 mm rear, 130 mm front) to smooth out rough trails, while a 10-speed Shimano CUES drivetrain provides simple, low maintenance shifting. Tektro Gemini SL 4-piston hydraulic disc brakes give you stopping power at a great value.
- The Powerfly FS+ gives you the powerful boost you crave on high alpine climbs, confident comfort on descents and a big battery for getting far out there
- Bosch's Performance Line CX motor delivers plenty of torque for steep, punchy climbs and is easy to control with the Purion 200 remote - plus you can customise it in the eBike Flow app
- Its RIB 2.0 removable integrated battery is easy to remove for travel and storage, and its virtually rattle-free while you ride
- Want even more boost? With the Bosch e-Bike Flow app, you can increase torque to 100 Nm and peak power up to 750W.
- It's compatible with Bosch PowerMore booster batteries. Parts can be retrofitted by the dealer
Removable Integrated Battery
RIB is a one-piece battery and cover with a built-in handle that can easily be removed and re-installed in the frame with no tools and no hassle. It's the most convenient way to remove your battery for transport, security or just easier charging.
Bosch Performance Line CX motor
The Bosch Performance Line CX sets the standard for eMTB performance with up to 85 Nm of torque and an intelligent eMTB mode with Extended Boost that automatically adjusts the amount of assist based on the terrain.
Bosch LED Remote
The Bosch smart system LED remote lets you easily change assist modes, activate walk mode or turn on optional lights. The bright LEDs are easy to see in any light, and show you your battery level and assist mode at a glance.
Bosch Kiox 300 display
The Bosch Kiox 300 is tough, compact and easy to read with a full-colour display. Keep ride data right where you can see it including rider power, motor output, speed, remaining range and more.
Adventure-ready accessories
The Powerfly Equipped gives you maximum utility thanks to pre-installed accessories. You get a kickstand, front and rear lights, plus mudguards and a rear rack custom made for clean integration.
Bosch eBike Flow app
The new eBike Flow app turns your ride into a personalised experience. Use it to customise your motor's assist behaviour, track your ride stats and integrate your data with apps like Strava and Apple Health. There's even handy features like navigation and service reminders.
At The Bike Cellar we offer a variety of payment methods to make your shopping experience convenient and flexible:
If you’d like to learn more about our payment methods, financing, or Cycle to Work schemes, don’t hesitate to contact us. Our friendly team are happy to assist!
You can find comprehensive delivery information in the section below.
At The Bike Cellar, we’re committed to making your shopping experience as seamless as possible. Below is everything you need to know about our delivery and returns policies, designed to ensure your order is handled with care and efficiency.
Please note we can only offer delivery to a mainland UK address.
While we aim for accuracy with stock availability, unforeseen delays may occur. If an item is delayed or out of stock, we’ll notify you promptly and offer alternative solutions where possible.
We use trusted carriers, including Royal Mail and Parcelforce, based on your order’s size and destination. Deliveries require a signature. If no one is available, a slip will indicate next steps or redelivery. Please inspect packages on arrival; if damaged, mark this on the delivery note.
If your order hasn’t arrived within the expected timeframe, call us at 01752 408338. We’ll provide tracking details and investigate the issue. Orders are considered lost after 15 working days from the estimated delivery date, at which point we can issue a refund or resend the order. Claims must be made within 30 working days of dispatch.
If you wish to cancel your order then please call us on 01752 408338 and we can provide a full refund exluding the delivery charge/postage cost. The refund will be issued when the goods arrive back in store and will take 3-5 business days to arrive back into your account.
Once your order is ready for collection, we’ll notify you by email. Orders must be collected within 21 business days. After this, items may be returned to stock, and refunds are not guaranteed. If you need more time, contact us to discuss your options.
Returns can be handled either in person at The Bike Cellar store or sent back by post. Be sure to keep proof of postage, and we recommend using a tracked or signed-for service for added peace of mind. Ensure that items are properly packaged, accompanied by the original receipt and a completed returns form, and addressed to:
The Bike Cellar
11 Radford Park Road
Plymstock
Plymouth
PL9 9DG
We want you to be completely satisfied with your purchase. If you need to return an item:
For bike returns, the bike needs to be returned (or arranged return) within 14 days of receiving the product. Please keep hold of the original packaging as it will need to be re-boxed in a way so that it doesn’t get damaged. Once the refund amount has been confirmed, this will be issued within 14 days of agreement. Contact us for collection arrangements:
Feel free to visit us at our Plymouth store or explore our products online at www.thebikecellar.co.uk. If you have any questions about deliveries or returns, don’t hesitate to get in touch by phone on 01752 408338 or via our contact form here.
| Frame | Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), tapered headtube, guided internal routing, Motor Armor, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, 34.9 mm seat tube, ABP, UDH, rack and mudguard mounts, Boost 148, 120 mm travel |
| Wheel Size | 27.5" (size small frame), 29" (M-XL) |
| Fork | RockShox Recon Silver, Solo Air spring, Motion Control damper, lockout, tapered steerer, 42Â mm offset, Boost110, Maxle Stealth, mudguard mounts, 130mm travel |
| Tyres | Bontrager Gunnison Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.40" Bontrager Gunnison Pro XR, Tubeless-Ready, wire bead, 60 tpi, 27.5x2.40" |
| Pedals | Bontrager VP-536 nylon platform |
| Wheels | Bontrager Line TLR 30, Tubeless-Ready, 28-hole, Presta valve // Bontrager Line TLR 30, Tubeless-Ready, 32-hole, Presta valve Shimano TC500 alloy, CentreLock, 110x15 mm thru axle Shimano TC500 alloy, CentreLock, 148x12 mm thru axle |
| Shifters | Shimano U6000, 10-speed |
| Front Brake | Tektro Gemini SL 4 piston hydraulic brake // Tektro Gemini SL 4 piston hydraulic brake Tektro, CentreLock, 203 mm |
| Rear Brake | Tektro Gemini SL 4 piston hydraulic brake // Tektro Gemini SL 4 piston hydraulic brake Tektro, CentreLock, 203 mm |
| Rear Derailleur | Shimano CUES U6000 GS |
| Crankset | FSA Bosch CK-220, 36T ring, 165 mm length |
| Chain | Shimano LG500, 9/10/11-speed |
| Headset | FSA IS-2, 1-1/8" top, 1.5" bottom |
| Handlebar | Bontrager Comp, alloy, 31.8 mm, 40mm rise, 780 mm width |
| Stem | Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length |
| Grips | Trek Line Comp, nylon lock-on |
| Seatpost |
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| Saddle | Bontrager Verse P3, steel rails |
| Mudguards | Trek 27.5" custom rear fender |
| Max Weight |
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| Battery Capacity | Bosch PowerTube 800 Wh, smart system |
| Charger | Bosch standard 2A, 230V, smart system |
| Computer | Bosch Purion 200 |
| Motor |
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| Sensor Type | PEDALFORCE |
| Colours | MERCURY/DARK WEB |
| Sizes | L, M, S, XL |
| Brand | Trek |
| Model Year | 2026 |
| Barcodes | 197216219415, 197216219422, 197216219439, 197216219446 |
| SKUs / Part Numbers | 5336915, 5336916, 5336917, 5336918 |
Please note: Manufacturers can sometimes change the specification of the products from time to time.