(no reviews)Product ID: 284935

Trek Powerfly FS+ 4 Equipped 800 Gen 4 2027 - Electric Mountain Bike

Name: Trek Powerfly FS+ 4 Equipped 800 Gen 4 2027 - Electric Mountain Bike
Brand: Trek

£3,900.00

Powerfly FS+ 4 Equipped 800 Gen 4 2027 - Electric Mountain Bike image 0

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, and a 10-speed Shimano CUES drivetrain delivers clean-shifts for any kind of trail. It comes ready for any adventure, with included mudguards, lights, a rear rack and kickstand.

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.

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.

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.

Shimano CUES

Inspired by rider demand for trouble-free drivetrain longevity and performance, Shimano CUES offers a new foundation for versatility and durability across a range of both electric and standard bikes. CUES features Shimano’s new LINKGLIDE drivetrain technology for significantly increased life on wear items like chain, cassette and chainrings.

Shimano LINKGLIDE

LINKGLIDE technology has been specifically engineered for incredible durability while still delivering smooth and decisive shifting – along with a great pedalling experience. Available exclusively on Shimano CUES drivetrains.

Don’t forget your pedals

This bike doesn’t come with pedals because you’ll have a better time on your new bike if you choose your own. See the pedal guide to find the best pedals for your riding style. We recommend clipless road pedals for control and efficiency.

Occasionally, without notice, manufacturers change product design and/or specifications.

Trek Powerfly+ FS Gen 4 Size Chart

Size	Height cm	Height Feet / Inches	Inseam cm	Inseam Inches
S	155 - 165 cm	5'1" - 5'5"	74 - 78 cm	29" - 31"
M	165 - 176 cm	5'5" - 5'9"	79 - 83 cm	31" - 33"
L	177 - 188 cm	5'10" - 6'2"	84 - 89 cm	33" - 35"
XL	188 - 195 cm	6'2" - 6'5"	89 - 91 cm	35" - 36"

What size frame do I need if I am between sizes? - read here

Trek Powerfly FS+ Gen 4 2025 Geometry Chart

Size	S	M	L	XL
Stack	597	629	647	666
Reach	425	450	475	500
Head Tube Length	130	110	130	150
Head Tube Angle	65.0°	66.0°	66.0°	66.0°
Bottom Bracket Height	330	335	335	335
Bottom Bracket Drop	30	45	45	45
Trail	123	125	125	125
Fork Rake/Offset	44	44	44	44
Chainstay Length	458	461	461	461
Wheelbase	1201	1223	1257	1290
Top Tube Length (horizontal)	563	595	630	654
Standover Height	756	780	775	778
Seat Tube Length	380	400	420	450
Seat Tube Angle	71.1°	71.3°	71.2°	72.4°
Effective Seat Tube Angle	77.0°	77.0°	77.0°	77.0°

All measurements are in mm unless otherwise stated.

The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.

(no reviews)Product ID: 284935

Trek Powerfly FS+ 4 Equipped 800 Gen 4 2027 - Electric Mountain Bike

The Powerfly FS+ 4 800Wh Equipped is a full-power full suspension electric mountain bike for taking on alpine adventures.

Select a product option to see availability

£3,900.00

Add to compare list

Free UK delivery over £50
At Tredz, we offer a fast high quality service, with a range of options from free delivery on orders over £50, next day and convenient click & collect from one of our stores. Simply select within the checkout.
⁠⁠*Courier deliveries to Northern Ireland, Isle of Man, Isle of Wight, Channel Islands and the Scottish Highlands/Islands will incur a charge.
Fully built by our experts
When you receive your bike, all you'll need to do is unpack it, attach the pedals, turn the handlebars and ride.
To help you get started we have put together a handy Bike Building Guide, click here.
90-Day Hassle-Free Returns
Shop with confidence. Our generous 90-day returns policy gives you extra time to make sure your order is right for you. If it's not, returning is easy. Bikes and larger items are collected by courier.
Our price promise
At Tredz, we’re committed to bringing you the best products at the best prices. If you find a product cheaper elsewhere, simply contact us for an immediate response using our live chat service. Click here to discuss your price match with an agent now for help.
Subject to Terms and Conditions
Trustpilot score 4.5 out of 5
Trustpilot score {trustpilot} out of 5
Reserve Bikes with Cycle to Work Reserves.
You can reserve your bike for free and lock in the price, so you don’t miss out whilst you're waiting for your voucher. Call us on 01792799508 to get started.
Any questions? Speak to an expert
Any questions? Speak to an expert

Frame	Alpha Platinum Aluminium, Removable Integrated Battery, tapered headtube, guided internal routing, Motor Armor, Mino Link adjustable geometry, adjustable leverage rate, 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 RockShox Recon Silver, Solo Air spring
Rear Shock	RockShox Deluxe Select R, 210x50 mm
Headset	FSA IS-2, 1-1/8" top, 1.5" bottom
Stem	Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
Bars	Bontrager Comp, alloy, 31.8 mm, 40mm rise, 780 mm width
Front Brake	Tektro HD-M5140 hydraulic disc
Rear Brake	Tektro HD-M5140 hydraulic disc
Rear Mech	Shimano CUES U6000 GS
Speed	10
Front Hub	Shimano TC500 alloy, CentreLock, 110x15 mm thru axle
Rear Hub	Shimano TC500 alloy, CentreLock, 148x12 mm thru axle
Front Tyre	Bontrager Gunnison Elite XR, Tubeless Ready, wire bead, 60 tpi, 29x2.40"
Rear Tyre	Bontrager Gunnison Elite XR, Tubeless Ready, wire bead, 60 tpi, 29x2.40"
Seat Post	TranzX JD-YSI34, 170 mm travel, internal routing, 31.6 mm
Saddle	Bontrager Commuter Comp
Chainset	FSA Bosch CK-220, 36T ring, 165 mm length
Chain	Shimano LG500, 9/10/11-speed
Cassette	Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed
Pedals	VP-536 nylon platform
Battery Size (WH)	Bosch PowerTube 800 Wh, smart system
Motor	Bosch Performance Line CX (Europe and APAC: 25 km/h, US and ROW: 20 mph / 32 km/h)
User Interface	Bosch Purion 200

AUTUMN BIKE DEALS

Trek Powerfly FS+ 4 Equipped 800 Gen 4 2027 - Electric Mountain Bike

Trek Powerfly+ FS Gen 4 Size Chart

Trek Powerfly FS+ Gen 4 2025 Geometry Chart

Trek Powerfly FS+ 4 Equipped 800 Gen 4 2027 - Electric Mountain Bike