Powerfly FS 4 Equipped
A 27.5″ / 29″ aluminum frame full suspension crosscountry e-bike with upper mid-range components.
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Manufacturer Price
£4,700($5,951)Weight | 60.4 lbs |
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Frame | Aluminum |
Suspension | Full, 100 / 120mm |
Fork | Suntour XCR Air |
Shock | Suntour |
Wheels | 27.5″ / 29″ Aluminum |
Drivetrain | 1 × 10 |
Groupset | Deore, FSA |
Motor | Bosch 250W 85Nm mid-drive |
Battery | Bosch 625Wh |
Brakes | Hydraulic Disc |
Seatpost | Dropper |
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 Comparison5'1" – 5'6"
5'4" – 5'9"
5'7" – 6'0"
5'10" – 6'3"
6'0" – 6'5"
🐐 Estimated
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.
Feb 2018
Built on the bones of the legendary Fuel series, the Trek Powerfly 7 FS is the top-of-the-line e-bike for Trek in Australia. It's got great pedigree, but we didn't love every aspect of its performance
Top notch build quality.
Frame feels indestructible.
Great rear suspension.
Torquey motor with plenty of range.
Will climb anything you point it at.
RockShox Recon fork isn't up to scratch.
Long rear end makes for sedate feel.
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 BB Standard: Bosch, Press Fit Tire Clearance: 2.4" Colors: Matte Gunmetal / Matte Black; Factory Orange / Lithium Grey; Purple Flip / Trek Black; Dark Aquatic/ Trek Black; Crimson / Lithium Grey |
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Fork | Size: XS, S, SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, 44 mm offset, oversized crown for eMTB, Boost110, 15 mm bolt-on thru axle, 100 mm travel; Size: M, L, XL, SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, 44 mm offset, oversized crown for eMTB, Boost110, 15 mm bolt-on thru axle, 120 mm travel Travel: 120mm Spring Type: Air |
Shock | SR Suntour Edge R, 190 mm x 45 mm Travel: 100mm |
Bottom Bracket | Bosch, press-fit |
Stem | Size: XS, S, Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length; Size: M, L, XL, Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length |
Handlebar | Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width |
Saddle | Bontrager Commuter Comp |
Seatpost | Size: XS, S, M, TranzX JD-YSP18, 100 mm travel, internal routing, 31.6 mm, 361 mm length; Size: L, XL, TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length Type: Dropper |
Pedals | VP-536 nylon platform |
Grips | Size: XS, S, M, L, XL, Bontrager XR Endurance Comp; Size: XS, S, M, L, XL, Bontrager XR Endurance Comp, lock-on |
Rear Derailleur | Shimano Deore M5120, long cage |
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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 Kovee, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve |
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Front Hub | Bontrager sealed bearing, alloy axle, 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: XS, S, Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35"; Size: M, L, XL, Bontrager LT4 Expert, reflective strip, wire bead, 60 tpi, 29x2.40" |
Disc Rotors | Tektro, 6-bolt, 203 mm |
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 |
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Battery | Bosch PowerTube 625 Recycling Program: ♻️ Call2Recycle |
Charger | Bosch compact 2A, 100–240V, smart system |
Lights | Size: XS, S, M, L, XL, Supernova E3 Mini-2 rear light, LED; Size: XS, S, M, L, XL, Herrmans MR8e front light, 180 lumen, 60 lux |
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Fenders | Size: XS, S, M, L, XL, Trek Powerfly FS custom mudguard; Size: XS, S, Trek Powerfly 27.5'' custom fender; Size: M, L, XL, Trek Powerfly 29'' custom fender |
Racks | MIK Compatible alloy rear rack |
Last updated July 14
Not listed for 695 days