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2021 Trek

Powerfly 5

A 27.5″ / 29″ aluminum frame hardtail trail e-bike with high-end components.
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Manufacturer Price

€3,999($4,651)
Weight50.7 lbs  
FrameAluminum
SuspensionHardtail, 120mm
ForkRockShox Recon Silver RL
Wheels27.5″ / 29″ Aluminum
Drivetrain1 × 12
GroupsetX1, NX Eagle
MotorBosch 250W 85Nm mid-drive
BatteryBosch 625Wh
BrakesShimano Hydraulic Disc
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Powerfly 5
Other Trail bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

27 mph

Powerfly 5

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
14.5"

4'5" – 5'2"

15.5"

5'0" – 5'6"

17.5"

5'3" – 5'10"

19.5"

5'8" – 6'3"

21.5"

6'1" – 6'6"

Rider Fit Notes

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Reviews

Summary

The Trek Powerfly is a versatile trail e-bike that excels in blending off-road capability with commuting practicality. Its full suspension system, including a SR Suntour Zeron 35 fork and RockShox SID Luxe Select+ rear shock, ensures a smooth ride over rough terrain. The bike is powered by a Bosch Performance Line CX motor and a long-range 625Wh battery, offering both power and endurance for varied rides.

Pros
  • Full suspension system for smooth off-road performance

  • Bosch Performance Line CX motor with 85Nm torque

  • Long-range 625Wh battery

  • Versatile for both trail and commuting use

  • High-quality components like Shimano XT brakes

Cons
  • High price point

  • Weight can be a drawback without motor assistance

  • Some design limitations in accessories like mudguards and rack

Key Quotes
The Trek Powerfly FS9 Equipped is an electric bike that makes you want to ride more – it allows you to take the more interesting routes less travelled on your commute and have fun on forest tracks at the weekend.
BikeRadar logoBikeRadar
Trek has created a proprietary rear suspension design called ABP (active brake pivot) that isolates suspension and braking so you won’t lose travel or lock up due to the force of the motor on the chain.
Electric Bike Review logoElectric Bike Review
The Trek Powerfly FS 9 blends sporty handling, efficient propulsion and long-distance comfort into a harmonious overall concept. The result: pure riding fun!
E-Mountainbike Magazine logoE-Mountainbike Magazine

Feedback?

View all reviews

Downtown
Trek Powerfly FS 9 Equipped

Sep 2022 · Mike Hunger

We have tested the Trek Powerfly FS 9 Equipped with Bosch Performance Line CX motor and 625 Wh battery for you.

Highs
  • Wide range of applications

  • Sporty and stylish look

  • Intuitive handling

  • Bosch SmartphoneHub ensures good connectivity

Lows
  • None

Read Review

BikeRadar
Trek Powerfly FS9 Equipped review

Feb 2022 · Russell Burton

A well-specified, comfortable and versatile ebike, but at a serious price

Highs
  • Comfort

  • Range

  • Stability

Lows
  • Expensive, especially if you’re considering leaving it outside the local shop

Read Review

E-Mountainbike Magazine
Trek Powerfly FS 9 Equipped in review – A new generation of E-trekking bike

Sep 2021 · Rudolf Fischer

In our E-trekking bike group test, Trek enter the race with the Powerfly FS 9 Equipped with its Bosch Performance CX motor and many sporty features.

Highs
  • Wide range of applications

  • Predictable handling

  • Spec includes high-quality mountain bike components

  • Many connectivity features through Bosch SmartphoneHub

Lows
  • Untidy cable routing of the cockpitt

Read Review

Electric Bike Review
Trek Powerfly FS 9 Equipped Review

Oct 2020

Price: $5999.00 | Model Year: 2021 | A premium

Observations
  • A premium "do anything" full suspension electric bike that's equipped to handle pavement, trails, light mountain terrain, rain, shine, day, or night conditions. Available in five frame sizes for optimal fit, the XS and S come with 27.5" wheels and the M, L, and XL come with 29" wheels. Sold through one of North America's largest network of dealers. Trek and Bosch provide excellent support and warranty.

  • Custom made extra-wide plastic fenders are durable and quiet, very capable in off-road conditions. A sleek and sturdy rear rack provides 25kg (55lbs) of cargo capacity with pannier hangers on both sides and a removable top platform for trunk bags. Puncture resistant tires also feature unique black reflective stripes that combine safety with aesthetics.

  • Downtube-integrated battery pack and mid-drive motor keep weight low and center. Trek designed a "RIB" battery casing includes a handle for safe removal and transport. The battery doesn't rattle, and it can be charged on or off the bike with the fast 4 amp charger. Peformance Line CX motor is the most powerful from Bosch, but lightweight with a magnesium casing.

  • Highly adjustable air suspension front and rear with 120mm and 100mm travel respectively. Boost hub spacing and thru-axles increase wheel strength. Extra large 203mm hydraulic disc brakes with heat sinks and alloy cores deliver incredible stopping power. The biggest trade-offs here include the high price, smartphone display (that some may not like), louder motor operation, and increased weight (due to the high capacity battery and accessories).

Read Review

Bikerumor
All-new Trek Powerfly full suspension e-MTBs hit the trails...and the street?

Sep 2020 · Tyler Benedict

The 2021 Trek Powerfly full suspension e-MTBs blend European sensibility with modern trail capability for a unique e-mountain bike option.

Read Review

MTBR
Trek releases all-new Rail and Powerfly Hardtail e-MTBs

Sep 2019 · Jordan Villella

- Mtbr.com

Read Review

Flow Mountain Bike
Tested: Trek Powerfly LT9

Mar 2019

 This isn’t the first time you’ve ridden this bike, right? Correct. We attended the launch of this bike last year, but we always prefer to test bikes on home soil in Australian conditions. We went deep on the tech details, so make sure you take a look at our First Impressions piece and video …

Highs
  • An incredible technical climber.

  • Built tough!

  • Smooth power delivery.

  • Excellent Bosch eMTB motor mode.

Lows
  • Slow speed manoeuvrability isn't great.

  • Quite heavy.

Read Review

Loam Wolf
Review: Trek Powerfly LT 7 Plus

Jan 2019

If I had to think of one common theme that continually came up during our time with the Powerfly, that would be it—too damn fun. Over the months we’ve had this bike, we’ve done it all and it does it all with ease.

Read Review

Geometry
Specs
Build
Frame

Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148

Tire Clearance2.6"

ColorsSlate / Volt; Radioactive Red / Trek Black; Purple Flip / Trek Black; Crystal White / Metallic Gunmetal

Fork

Size: XS, RockShox Recon Silver RL, Solo Air spring, Motion Control damper, lockout, tapered steerer, 46 mm offset, Boost110, Maxle Stealth, 80 mm travel; Size: S, M, L, XL, RockShox Recon Silver RL, Solo Air spring, Motion Control damper, lockout, tapered steerer, 42 mm offset, Boost110, Maxle Stealth, 120 mm travel

Travel120mm

Spring TypeAir

Stem

Size: XS, Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length; Size: S, M, Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length; Size: L, XL, Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length

Handlebar

Size: XS, S, Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width; Size: M, L, XL, Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width

Saddle

Bontrager Commuter Comp

Seatpost

Size: XS, S, Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length; Size: M, Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length; Size: L, XL, Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length

TypeRigid

Pedals

VP-536 nylon platform

Grips

Bontrager XR Endurance Comp

Groupset
Rear Derailleur

SRAM NX Eagle

Crank

SRAM X1 1000, 34T, 165 mm length

Shifters

SRAM SX Eagle single-click, 12-speed

Cassette

SRAM PG-1210 Eagle, 11-50, 12-speed

Chain

SRAM SX Eagle, 12-speed

Brakes

Size: XS, S, M, L, XL, Shimano MT420 4-piston hydraulic disc; Size: XS, S, M, L, XL, Shimano 4-piston hydraulic disc, MT4100 lever, MT420 calliper

TypeShimano Hydraulic Disc

Wheels
Rims

Size: XS, S, M, L, XL, Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve; Size: XS, S, M, L, XL, Bontrager Kovee Comp, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve

Front Hub

Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle

Tires

Size: XS, S, Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35"; Size: M, L, XL, Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30"

Disc Rotors

Size: XS, S, M, L, XL, Shimano RT66, 203 mm, 6-bolt; Size: XS, S, M, L, XL, Shimano RT66, 6-bolt, 203 mm

Electric Components
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

Battery

Bosch PowerTube 625

Remote

Bosch Purion

Charger

Bosch compact 2A, 100–240V, smart system

Rider Notes
Riders Also Viewed

First added January 27

Last updated October 1

Not listed for 1,336 days