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Powerfly FS+ 4 Equipped packs a Bosch CX motor, 800 Wh battery, RockShox suspension, Shimano CUES, plus lights, rack, mudguards — ready for any trail.
Powerfly FS+ 4 Equipped packs a Bosch CX motor, 800 Wh battery, RockShox suspension, Shimano CUES, plus lights, rack, mudguards — ready for any trail.
Trek

Trek Powerfly FS+ 4 Equipped 800 Wh Gen 5 2026 in Mercury/Dark Web

£4,400.00
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We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

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Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Trek Powerfly FS+ 4 Equipped 800 Wh Gen 5 2026 in Mercury/Dark Web

Season:2026

Brand:Trek

Code:57352CH-BK

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.

Key Features & Benefits

  • RIB 2.0 removable integrated battery: Easy to remove for travel and storage, and it's virtually rattle-free while you ride.
  • Bosch 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.
  • Compatible with Bosch PowerMore Booster Batteries: Want to ride even further? You can even upgrade the 600 Wh battery for a bigger 800 Wh option.

Full Specification

  • 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
  • Fork: RockShox Recon Silver, Solo Air spring, Motion Control damper, lockout, tapered steerer, 42mm offset, Boost110, Maxle Stealth, mudguard mounts, 130mm travel
  • Shock: RockShox Deluxe Select R, 210x50 mm
  • Motor: Bosch Performance Line CX
  • Battery: Bosch PowerTube 800Wh, smart system
  • Controller: Bosch Purion 200
  • Number of Gears: 10
  • Gear Shifters: Shimano U6000, 10 speed
  • Chainset: FSA Bosch CK-220, 36T ring, 165mm
  • Chainrings: 36T
  • Rear Cassette: Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
  • Chain: Shimano LG500, 9/10/11 speed
  • Front Derailleur: N/A
  • Rear Derailleur: Shimano CUES U6000 GS
  • Bottom Bracket: Sealed Bearing
  • Pedals: VP-536 nylon platform
  • Rims: Bontrager Line TLR 30
  • Front Hub: Shimano TC500 alloy, centerlock, 110x15mm thru axle
  • Rear Hub: Shimano TC500 alloy, centerlock, 148x12mm thru axle
  • Front Tyre: Bontrager Gunnison Pro XR, Tubeless Ready 29x2.4 (S-27.5)
  • Rear Tyre: Bontrager Gunnison Pro XR, Tubeless Ready 29x2.4 (S-27.5)
  • Brakes: Tektro Gemini SL 4 piston hydraulic brake
  • Handlebars: Bontrager Comp, alloy, 31.8mm, 40mm rise, 780mm width
  • Handlebar Grip: Bontrager XR Trail Comp / Trek Line Comp
  • Headset: FSA IS-2, 1-1/8" top, 1.5" bottom
  • Stem: Bontrager Comp, 31.8mm, Blendr compatible, 7 degree 50mm length
  • Saddle: Bontrager Verse P3, Steel Rails
  • Seatpost: Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 31.6 mm, 310 mm length S-310mm, M-XL 450mm
  • Accessories: Supernova Mini 3 pure, LED, headlight. Supernova TL3 Mini, LED. Pletscher Comp Flex 18 Kickstand. MIK Alloy Rack
  • Weight: This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Size Guide for Powerfly FS+

Smaller Powerfly FS frames feature a curved top tube that makes standing over the bike easier.
SizeRider HeightRider HeightInseamInseam
S155 - 165 cm5'1" - 5'5"74 - 78 cm29" - 31"
M165 - 176 cm5'5" - 5'9"79 - 83 cm31" - 33"
L177 - 188 cm5'10" - 6'2"84 - 89 cm33" - 35"
XL188 - 195 cm6'2" - 6'5"89 - 91 cm35" - 36"

Geometry Information for Powerfly FS+

Frame size number15.5"17.5"19.5"21.5"
Frame size letterSMLXL
Wheel size27.5"29"29"29"
A —Seat tube38404245
B —Seat tube angle71.1°71.3°71.2°72.4°
Effective seat tube angle77.0°77.0°77.0°77.0°
C —Head tube length13111315
D —Head angle65.0°66.0°66.0°66.0°
E —Effective top tube56.359.56365.4
F —Bottom bracket height3333.533.533.5
G —Bottom bracket drop34.54.54.5
H —Chainstay length45.846.146.146.1
I —Offset4.44.44.44.4
J —Trail12.312.512.512.5
K —Wheelbase120.1122.3125.7129
L —Standover75.67877.577.8
M —Frame reach42.54547.550
N —Frame stack59.762.964.766.6

Warranty Information for Trek:

Lifetime warranty on Frame sets (frame and rigid fork), main frame and full suspension swing arms for the lifetime of the original owner, and Bontrager wheels with carbon rims.

2-year warranty on Rear suspension linkage components, including bearings, rocker link and accompanying hardware and components, Bontrager wheels with alloy rims, Paint and transfers.

For full warranty policy please visit trekbikes.com

Sizing Information
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