Powerfly FS 9 Equipped Gen 2

Overview

You want a super versatile full suspension e-MTB to take out on the trail. You also want it to come equipped with commute-ready accessories so you can bring home the bacon and get a little shreddy on your way back from work.

A durable aluminium frame that fully encases a long-range 625 Wh battery, a powerful Bosch Performance CX motor that helps you sustain speeds of up to 20 mph (25 km/h in Europe) and a SmartphoneHub controller that can be used with or without your phone. Plus, a 120 mm suspension fork, 100 mm of rear travel, powerful 4-piston hydraulic brakes, Bontrager Line Comp 30 wheels, a 12-speed Shimano XT drivetrain and a dropper post for getting low on descents.

Our best Powerfly FS rips rough trails, rail trails and rugged commutes thanks to a plush suspension set-up, powerful drive system and loads of utility features.

It comes equipped with mudguards, a rear boot rack and lights that are powered by the battery so you're ready to ride right from the start
Download the COBI.Bike app and your phone becomes an on-board computer. Attach it to SmartphoneHub to charge, make or take calls, listen to music, get turn-by-turn directions and more
Wide Line Comp 30 wheels provide more tyre support, so you get better traction and control
Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy to remove the battery without tools and lets you mount a water bottle cage – even on full suspension e-MTBs
The size S frame features a curved top tube that makes standing over the bike easier. Plus, Smart Wheel Sizing means you'll get the fastest wheel that fits – 29˝ wheels on larger frames, 27.5˝ wheels on smaller frames

2023

Powerfly FS 7 Gen 2

€6,599.00 (MSRP)

2023

Powerfly FS 4 625 Gen 2

€5,099.00 (MSRP)

2023

Powerfly FS 4 500 Gen 2

€4,899.00 (MSRP)

Guidelines and tips for protecting and sharing the trails you ride.

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Do this quick pre-ride safety check before you hit the trails.

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Features

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.

Trek eMTBs feature a custom eMTB Lite mode in place of Tour mode. It gives you more natural-feeling power delivery and longer battery life.

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.

Watch the video

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.

To see how far you can ride your electric mountain bike on a single charge, check out Bosch’s range calculator. We’ve auto-filled the variables for this bike model and the average rider, but you can make adjustments to get your most accurate estimate.

Calculate your range

This suspension calculator will help you optimise your suspension settings for your riding weight. Simply follow the steps to find your best set up.

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The Bosch SmartphoneHub connects your smartphone to the COBI.Bike app via Bluetooth, turning your phone into an on-board computer. You can charge your phone, take calls, listen to music, track your fitness, get directions and more. Smartphone? More like Smartbike.

The right wheel size paired with your frame size gives you the perfect combination of responsiveness and control.

Use the remote lever to lower your saddle so it's out of your way when you're descending and cornering.

You've got one less detail to sweat with the integrated speed sensor. The chainstay-mounted sensor stays protected while the custom hub-mounted magnet stays secure – no more error codes from mis-aligned sensors.

Specs

Frame	Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, internal routing, Motor Armour, magnesium rocker link, rack and mudguard mount, ABP, Boost148, 100 mm travel
Fork	SR Suntour Zeron 35, air spring, LO R damper, hydraulic lockout, tapered steerer, 44 mm offset, Boost110, 15 mm bolt-on thru axle, 120 mm travel
Shock	RockShox SID Lux Select+, 190 x 45 mm
Max compatible fork travel	120mm (XS & S: 520mm axle-to-crown, M & up: 545mm axle-to-crown)

Hub front	Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle
Hub rear	Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano MicroSpline freehub, Boost148, 12 mm thru axle
Skewer rear	Bontrager Switch thru-axle, removable lever
Rim	Bontrager Line Comp 30, Tubeless-Ready, 28-hole, Presta valve
*Tyre	Size: XS , S Bontrager LT4 Expert, reflective strip, wire bead, 60 tpi, 27.5x2.40"
Size: M , L , XL Bontrager LT4 Expert, reflective strip, wire bead, 60 tpi, 29x2.40"
Max tyre size	Frame: 29x2.40" (XS & S: 27.5x2.60") Fork: See manufacturer

Shifter	Shimano XT M8100, 12-speed
Rear derailleur	Shimano XT M8100, long cage
Crank	Ethirteen Espec Plus, 165 mm length
Chainring	E*thirteen, 36T, steel
Cassette	Shimano XT M8100, 10-51, 12 speed
Chain	Shimano XT M8100, 12-speed
Pedal	VP-536 nylon platform
Max. chainring size	Max: 46T, Min 34T

Saddle	Bontrager Commuter Comp
*Seatpost	Size: XS , S , M Bontrager Line Dropper, 100 mm travel, internal routing, 31.6 mm, 345 mm length
Size: L , XL Bontrager Line Dropper, 150mm travel, internal routing, 31.6 mm, 440mm length
Handlebar	Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
*Grips	Size: XS , S , M , L , XL Bontrager XR Endurance Comp, lock-on
Size: XS , S , M , L , XL Bontrager XR Endurance Comp
*Stem	Size: XS , S Bontrager Elite, 31.8 mm, Blendr light mount, 7-degree rise, 60 mm length
Size: M , L , XL Bontrager Elite, 31.8 mm, Blendr light mount, 7-degree rise, 70 mm length
Head set	FSA IS-2
Brake	Shimano XT M8120 4-piston hydraulic disc
Brake rotor	Shimano RT76, 6-bolt, 203 mm

Battery	Bosch PowerTube 625
Charger	Bosch standard 4A, 220–240V
Controller	Bosch SmartphoneHub
Motor	Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 25 km/h (15.5 mph) max assist, 32 km/h for New Zealand
*Light	Size: XS , S , M , L , XL Supernova E3 Mini-2 rear light, LED
Size: XS , S , M , L , XL Supernova Mini 2, 5-21V LED headlight
Kickstand	Pletscher Comp Flex 18
Cargo rack	MIK Compatible alloy rear rack
*Mudguard	Size: XS , S Trek Powerfly 27.5" custom fender
Size: XS , S , M , L , XL Trek Powerfly FS custom mudguard
Size: M , L , XL Trek Powerfly 29" custom fender

Weight	M - 27.05 kg/59.64 lb
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

Sizing

Geometry

Service

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Suspension Calculator

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Bosch SmartphoneHub Display

Smart Wheel Size

Dropper post

Integrated speed sensor