2021 Trek
Powerfly Sport 4 Equipped
A 27.5″ / 29″ aluminum frame hardtail trail e-bike with upper mid-range components.
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Manufacturer Price
£3,300($4,179)| Weight | 56.4 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Hardtail, 120mm |
| Fork | Suntour XCM |
| Wheels | 27.5″ / 29″ Aluminum |
| Drivetrain | 1 × 10 |
| Groupset | Deore, FSA |
| Motor | Bosch |
| Battery | Bosch 500Wh |
| Brakes | Hydraulic Disc |
For This Bike
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Powerfly model range
View Comparison4'5" – 5'2"
5'0" – 5'6"
5'3" – 5'10"
5'8" – 6'3"
6'1" – 6'6"
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
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.
Wide range of applications
Sporty and stylish look
Intuitive handling
Bosch SmartphoneHub ensures good connectivity
None
Feb 2022 · Russell Burton
A well-specified, comfortable and versatile ebike, but at a serious price
Comfort
Range
Stability
Expensive, especially if you’re considering leaving it outside the local shop
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.
Wide range of applications
Predictable handling
Spec includes high-quality mountain bike components
Many connectivity features through Bosch SmartphoneHub
Untidy cable routing of the cockpitt
Oct 2020
Price: $5999.00 | Model Year: 2021 | A premium
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).
Sep 2020
The 2021 Trek Powerfly full suspension e-MTBs blend European sensibility with modern trail capability for a unique e-mountain bike option.
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.
Oct 2018 · Alan Muldoon
Up hill or down, ebikes take an absolute beating, so the new Trek Powerfly 9 has a beefed up the parts package to handle the additional abuse.
Suspension, brakes and tyres are all on point. New battery layout is neat and easy to use.
Could have more generous reach measurements and shorter stems on all sizes.
Jul 2018
New in this Powerfly generation are an advanced removable battery system, carbon fiber frames, purpose-built ebike components and the 150mm of travel in the LT model. - Mtbr.com
| Frame | Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148 BB Standard: Bosch, Press Fit Color: Lithium Grey / Trek Black |
|---|---|
| Fork | Size: XS, SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 80 mm travel; Size: S, M, L, XL, SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel Travel: 120mm Spring Type: Coil |
| Bottom Bracket | Bosch, press-fit |
| Stem | Size: XS, Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 50 mm length; Size: S, M, Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length; Size: L, Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length; Size: XL, Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length |
| Handlebar | Bontrager alloy, 31.8 mm, 15 mm rise, 720 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 Type: Rigid |
| Pedals | VP-536 nylon platform |
| Grips | Bontrager XR Endurance Comp |
| Rear Derailleur | Shimano Deore M5120, long cage |
|---|---|
| Crank | FSA Bosch CK-220, 36T ring, 165 mm length |
| Shifters | Shimano Deore M4100, 10 speed |
| Cassette | Shimano Deore M4100, 11-46, 10-speed |
| Chain | KMC X10, 10-speed |
| Brakes | Tektro HD-M275 hydraulic disc Type: Hydraulic Disc |
| Rims | Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve |
|---|---|
| Spokes | 14 g stainless steel |
| Front Hub | Formula DC-511, 6-bolt, Boost110, 15 mm thru axle |
| Rear Hub | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle |
| Tires | 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" |
| Disc Rotors | Size: XS, S, M, L, XL, Tektro, 180 mm, 6-bolt; Size: XS, S, M, L, XL, Tektro, 6-bolt, 203 mm |
| Motor | Bosch PowerTube, vertical, 500 wh |
|---|---|
| Battery | Bosch PowerTube, vertical, 500 wh Recycling Program: ♻️ Call2Recycle |
| Charger | Bosch compact 2A (100-240 V) charger |
| Lights | AXA Blueline taillight |
|---|---|
| Racks | MIK Compatible alloy rear rack |
Last updated April 16
Not listed for 1,121 days