Trek 2026 Powerfly FS+ 4 800Wh Gen 4
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MERCURY/DARK WEB
5336915
197216219415
The 2026 Powerfly FS+ 4 800Wh Gen 4 S 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 800W is a full-power full suspension electric mountain bike for taking on alpine adventures. Its powerful Bosch motor gives you a boost for soaring up climbs, while a massive 800 Wh battery keeps you going through your longest adventures. A RockShox suspension package (120 mm rear, 130 mm front) smooths out rough trails, while a 10-speed Shimano CUES drivetrain delivers clean-shifts for any kind of trail.
- 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.
A better way to produce aluminium
Starting in 2024, we began removing high-emission aluminium from our manufacturing and replacing it with low-emission aluminium made with renewable energy. By October 2025, nearly every alloy bike we make ? this one included ? had made the switch, driving a major drop in our footprint.
Free UK Delivery On Bike Orders Over £1500 *
All our UK customers can select our FREE standard delivery option on any order over £35 (except exclusions). Learn more about Cookson Cycles Delivery options here.
Once processed, in store stock items will typically be dispatched within 48 hours.
If you have chosen our white glove delivery option dispatch times vary due to courier availability.
* excludes cycle to work purchases - Standard Delivery charge for all cycle to work purchases £35
Bike Build & Delivery
All our bikes are built in store and thoroughly inspected, before carefully packing back up for shipping. If you have selected our white glove delivery service, the bike will come to you ready to ride and the driver can help with some basic bike setup (Saddle height and suspension) at your doorstep. Please be aware if you haven’t selected our white glove delivery service the bike will require some assembly, which we recommend be carried out by an experienced mechanic. See assembly instructions here
Click & Collect
Click and collect is available on all purchases at checkout. Once your order is ready to collect, we will notify you via email or text.
0% Finance Options Available
Spread the cost of your purchase with 0% finance on all bikes, accessories, and parts. Simply choose Klarna at checkout to view your interest-free options, available for up to 36 months.
Prefer an alternative? We also offer Novuna Finance, with 0% APR available for up to 18 months, or interest-bearing loans over terms up to 48 months. Select Novuna at checkout to start your application.
Save up to 39% via Cycle to Work!
Purchasing through a Cycle to Work scheme enables you to pay for the bike via salary sacrifice and make a great saving.
Most bikes* and accessories we offer can be purchased through the scheme - You can also purchase accessories, clothing and upgrades for your bike too.
We accept vouchers from most providers, with a preference for Green Commute Initiative https://www.greencommuteinitiative.uk/ or GoGeta https://www.gogeta.com/
If your company haven’t signed up to a scheme, its super easy and with the provider Green Commute Initiative it doesn’t require the company to sign up - So less admin and paperwork for a busy admin/accounts team!
For a full list of providers we accept vouchers for see details here https://cooksoncycles.co.uk/cycle-to-work/ If you can’t see your provider on our list, just drop the store an email and we can double check.
*Depending on the cycle to work provider we may not be able to offer full discount on sale bikes or accessories due to commissions charged by the scheme.
| Frame | Size S, 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 |
| Fork | RockShox Recon Silver, Solo Air spring, Motion Control damper, lockout, tapered steerer, 42�mm offset, Boost110, Maxle Stealth, mudguard mounts, 130�mm travel |
| Wheel Size | Front 27.5 / Rear 27.5 |
| 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 |
| Tyres | Bontrager Gunnison Pro XR, Tubeless-Ready, wire bead, 60 tpi, 27.5x2.40" |
| Battery | Bosch PowerTube 800 Wh, smart system |
| Charger | Bosch standard 2A, 230V, smart system |
| Display | Bosch Purion 200 |
| Motor | Bosch Performance Line CX, 20 mph / 32 km/h max assist (25 km/h max assist in EU and APAC) |
| Shifter | Shimano U6000, 10-speed |
| Rear Derailleur | Shimano CUES U6000 GS |
| Crank | FSA Bosch CK-220, 36T ring, 165 mm length |
| Cassette | Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed |
| Chain | Shimano LG500, 9/10/11-speed |
| Pedals | VP-536 nylon platform |
| Front Brake | Tektro Gemini SL 4 piston hydraulic brake // Tektro Gemini SL 4 piston hydraulic brake Tektro, CentreLock, 203 mm Max brake rotor size |
| Rear Brake | Tektro Gemini SL 4 piston hydraulic brake // Tektro Gemini SL 4 piston hydraulic brake Tektro, CentreLock, 203 mm Max brake rotor size |
| Handlebar | Bontrager Comp, alloy, 31.8 mm, 40mm rise, 780 mm width |
| Grips | Bontrager XR Trail Comp, nylon lock-on // Trek Line Comp, nylon lock-on |
| Stem | Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length |
| Headset | FSA IS-2, 1-1/8" top, 1.5" bottom |
| Seatpost | Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 31.6 mm, 310 mm length |
| Seatpost Clamp | Bolt-on, 36.4 mm |
| Saddle | Bontrager Verse P3, steel rails |
| 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.
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with a £ 0.00 deposit.
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Please note the above quotation is an indicative cost and actual monthly payments may vary by +/- 2p per month.
Credit subject to status and affordability. Terms & Conditions Apply. Cookson Cycles is a credit broker and is Authorised and Regulated by the Financial Conduct Authority. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority. Financial Services Register no. 704348. The register can be accessed through http://www.fca.org.uk.
24 Month Representative Example:
Purchase Price (incl. VAT) £750
Deposit £75
Loan Amount £675
Interest/Total Charge for Credit £109.32
Total Amount Repayable £859.32
Balance Payable £784.32
By 24 Monthly Repayments of £32.68
15.9% APR Representative
Bank rate of interest 8.1% PA fixed
Please note the above quotation is an indicative cost and actual monthly payments may vary.
For Buy Now Pay Later and Deferred Interest Bearing Credit: Interest is charged from day 1 of your agreement, but not charged on any repayments made during the deferral period. On expiry of the deferral period, interest accrued during the deferral period will be applied to your repayments.
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This is for estimation purposes only. Actual Finance Application is Completed During Checkout.