Torque and cadence sensing adds value by improving assist control and ride feel.
Built-in lights add practical everyday value.
A removable battery adds practical value for charging and storage.
The included display or control unit adds useful everyday value.
Front and rear suspension adds component value, especially for comfort or off-road use.
The bike has 10 or more gears, which adds useful drivetrain range.
The bike appears to be a recent or current model.
The release age is recent, which supports value if pricing is competitive.
97
Excellent removable battery practicality
The removable battery makes charging, storage and battery handling more flexible.
The removable battery makes charging, storage and battery handling more flexible.
This bike type can be larger or heavier, so a removable battery adds useful charging flexibility.
Because the bike is heavier than average, removing the battery can make handling and charging more convenient.
The larger battery capacity makes removable charging more useful for day-to-day convenience.
The longer charging time makes it more useful to charge the battery separately from the bike.
93
Very well-equipped for daily use
Built-in lights add useful everyday practicality.
Built-in lights add useful everyday practicality.
The included display or control unit adds useful ride information for daily use.
A removable battery makes daily charging and storage more flexible.
Multiple ride modes should help adapt the bike to different everyday journeys.
Hydraulic disc brakes are useful equipment for confident daily riding.
Payload capacity is average or better, which helps with bags, shopping or daily kit.
89
Excellent built-in lighting
Built-in lights are included, which is useful for commuting and low-light riding.
Built-in lights are included, which is useful for commuting and low-light riding.
The display or control unit may make light and ride-status management easier.
Battery capacity is average or better for this type of e-bike, supporting everyday powered accessories.
87
Excellent trail control
The mountain bike format should feel well suited to trail riding.
The mountain bike format should feel well suited to trail riding.
Front and rear suspension should improve control on uneven trails.
Hydraulic disc brakes should improve control on loose or uneven trails.
The 27.5-inch wheel size should balance manoeuvrability and trail control.
Torque is strong compared with similar e-bikes, which should help low-speed trail control.
Torque-sensing assistance should help with smoother power control on trails.
Power-to-weight is strong, which should help when controlling the bike over uneven trail sections.
Overview
The Trek Powerfly FS+ 4 is a capable mountain e-bike built for trail riding, offering strong motor support and a high-capacity battery that provides reliable range for most adventures. Its hydraulic disc brakes deliver confident stopping power, and the removable battery adds convenience for charging and storage. However, the bike's charging time is notably slow, and while the motor is powerful, it may feel less punchy in acceleration compared to some competitors. At 27.41 kg, it's heavier than average, which might make lifting it more challenging, especially when transporting or storing.
Best For
✓
This mountain e-bike should suit riders who prioritize off-road performance, comfort on rough terrain, and reliable hill climbing. Its high-capacity battery and strong motor power make it a solid choice for trail riders looking for confidence and endurance on longer rides. The hydraulic disc brakes and suspension system also provide good control and comfort, making it a practical option for those who frequently ride on uneven or technical trails. Riders who appreciate the flexibility of a removable battery for easy charging and storage may also find this feature particularly useful.
Who Should Avoid It
×
Riders needing maximum range may want to compare alternatives, as the range is below average for similar mountain e-bikes, which could require more frequent charging on longer rides. The charging time is also longer than average for this type of e-bike, which may be a drawback for those prioritising convenience. However, the bike still offers a strong battery setup and excellent off-road capability, making it a solid choice for riders focused on trail performance and confident braking.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
36
Some maintenance considerations
Weak
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Hydraulic disc brakes are a strong everyday setup, though they may need occasional specialist servicing.
A removable battery makes charging, storage and battery care easier.
Tyres are listed, but there is no clear puncture-protection signal.
The aluminium frame material is practical for everyday use and general maintenance.
Built-in lights reduce the need to manage separate lighting accessories.
The mountain bike format may involve more wear from rougher riding and more complex components.
A higher number of gears can add drivetrain complexity.
Front and rear suspension can add maintenance complexity.
0
Limited storage practicality
Poor
The frame does not appear to fold, so storage will depend more on size and weight.
The frame does not appear to fold, so storage will depend more on size and weight.
The bike is heavier than average for its type, which may make storage and moving it harder.
The removable battery can make storage and indoor charging more flexible.
A full-suspension mountain bike format is usually bulkier and harder to store indoors.
21
Harder to lift
Poor
The bike is heavier than average for its type, so it may not be especially easy to lift.
The bike is heavier than average for its type, so it may not be especially easy to lift.
The listed weight is 27.41 kg.
The aluminium frame material is a practical lightweight choice for many e-bikes.
The removable battery can reduce the weight when lifting or moving the bike.
The mountain bike format can be bulkier and harder to lift than simpler urban e-bikes.
The larger-than-average battery capacity may add weight.
97
Excellent removable battery practicality
Excellent
The removable battery makes charging, storage and battery handling more flexible.
The removable battery makes charging, storage and battery handling more flexible.
This bike type can be larger or heavier, so a removable battery adds useful charging flexibility.
Because the bike is heavier than average, removing the battery can make handling and charging more convenient.
The larger battery capacity makes removable charging more useful for day-to-day convenience.
The longer charging time makes it more useful to charge the battery separately from the bike.
0
Very slow charging speed
Poor
Charging time is longer than average for this type of e-bike.
Charging time is longer than average for this type of e-bike.
The quoted charging time is long in absolute terms.
29
Low battery efficiency
Poor
Battery efficiency appears average for this type of e-bike.
Battery efficiency appears average for this type of e-bike.
The calculated range per battery unit is 68.75.
Range is weak despite a larger battery, which suggests lower battery efficiency.
93
Very well-equipped for daily use
Excellent
Built-in lights add useful everyday practicality.
Built-in lights add useful everyday practicality.
The included display or control unit adds useful ride information for daily use.
A removable battery makes daily charging and storage more flexible.
Multiple ride modes should help adapt the bike to different everyday journeys.
Hydraulic disc brakes are useful equipment for confident daily riding.
Payload capacity is average or better, which helps with bags, shopping or daily kit.
75
Good bad-weather practicality
Good
Hydraulic disc brakes should provide better control and confidence in wet conditions.
Hydraulic disc brakes should provide better control and confidence in wet conditions.
Built-in lights are useful for rain, low light and darker commutes.
The mountain bike format should offer useful control on rough or slippery surfaces.
Suspension can help control and comfort on rough, wet or uneven surfaces.
The bike weight may help it feel more planted in wet or windy conditions.
The wheel size should be workable for regular poor-weather riding, depending on tyre choice.
Frame material is listed as aluminium, which gives useful durability and maintenance context.
41
Some family utility limitations
Weak
Payload capacity is average for this type of e-bike.
Payload capacity is average for this type of e-bike.
The listed maximum payload is practical for lighter utility use.
The listed maximum payload is 136 kg.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
Built-in lights are useful for school runs, errands and daily utility riding.
A removable battery makes charging easier around family or utility use.
Battery capacity is strong compared with similar e-bikes, supporting utility trips.
Where to buy
Priced at £4,400, the Trek Powerfly FS+ 4 Equipped 800Wh Gen 4 looks favourably positioned against similar mountain bikes from 2026, offering a strong balance of power and capacity. The main trade-off may be its weight compared to lighter alternatives in the category.
Compared with similar mountain bike e-bikes on Bikkerr, this model sits £1,258.07 below average
Lowest price now: £3,900.00Best price ever seen:
£3,900.00Price drop detectedPrices update every ~24 hours
Priced at £4,400, this Trek Powerfly FS+ 4 Equipped 800Wh Gen 4 sits comfortably within the range of similar mountain e-bikes from 2026, offering a compelling mix of performance and features. It stands out with a strong 800Wh battery and 85Nm of torque, which provide solid hill support and control on rough terrain, and its power-to-weight ratio is competitive for this type of bike. However, some similar models may offer a slightly greater range, which could be important for longer off-road rides. For a mountain e-bike focused on trail versatility and confidence, the combination of torque-sensing assistance and hydraulic disc brakes makes this a well-rounded option. Riders prioritising strong motor support, reliable braking, and a balanced package for off-road use are likely to see the value here. The trade-off in range may be less of a concern for those who ride shorter trails or can plan charging stops.
We reach this value score by combining the bike’s price, specification, performance data and comparison against similar e-bikes in our database.
99
The price/value label suggests this bike offers good value.
The listed price is GBP 4,400.
The bike appears to save around GBP 263 versus the average.
Battery capacity is strong compared with similar e-bikes.
Motor power is strong compared with similar e-bikes.
Same power20 miles more rangeSame battery2 kg lighter2 more gears
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Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
0
Limited commuting practicality
The mountain bike format is less commuting-focused and may be less efficient for daily urban use.
The mountain bike format is less commuting-focused and may be less efficient for daily urban use.
Range is below average, but may still be usable for shorter commutes.
Charging time is longer than average, which may be less convenient for daily use.
Built-in lights are useful for commuting and low-light riding.
A removable battery makes home, office or indoor charging easier.
The display or control unit should make it easier to monitor assist level and battery use.
Hydraulic disc brakes are a strong practical feature for daily riding.
Payload capacity is average for this type of e-bike.
The bike is heavier than average for its type, which may make daily handling less convenient.
Front and rear suspension can add weight and complexity for normal commuting.
0
Limited storage practicality
The frame does not appear to fold, so storage will depend more on size and weight.
The frame does not appear to fold, so storage will depend more on size and weight.
The bike is heavier than average for its type, which may make storage and moving it harder.
The removable battery can make storage and indoor charging more flexible.
A full-suspension mountain bike format is usually bulkier and harder to store indoors.
0
Very slow charging speed
Charging time is longer than average for this type of e-bike.
Charging time is longer than average for this type of e-bike.
The quoted charging time is long in absolute terms.
21
Harder to lift
The bike is heavier than average for its type, so it may not be especially easy to lift.
The bike is heavier than average for its type, so it may not be especially easy to lift.
The listed weight is 27.41 kg.
The aluminium frame material is a practical lightweight choice for many e-bikes.
The removable battery can reduce the weight when lifting or moving the bike.
The mountain bike format can be bulkier and harder to lift than simpler urban e-bikes.
The larger-than-average battery capacity may add weight.
24
Poor range-to-weight balance
Range is below average, so the range-to-weight balance is more limited.
Range is below average, so the range-to-weight balance is more limited.
The bike is heavier than average, which limits range-to-weight balance.
Battery efficiency appears broadly average.
Range is limited despite a larger battery, which weakens the efficiency picture.
The calculated range per kg is 2.01.
The calculated range per battery unit is 68.75.
29
Low battery efficiency
Battery efficiency appears average for this type of e-bike.
Battery efficiency appears average for this type of e-bike.
The calculated range per battery unit is 68.75.
Range is weak despite a larger battery, which suggests lower battery efficiency.
36
Some maintenance considerations
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Hydraulic disc brakes are a strong everyday setup, though they may need occasional specialist servicing.
A removable battery makes charging, storage and battery care easier.
Tyres are listed, but there is no clear puncture-protection signal.
The aluminium frame material is practical for everyday use and general maintenance.
Built-in lights reduce the need to manage separate lighting accessories.
The mountain bike format may involve more wear from rougher riding and more complex components.
A higher number of gears can add drivetrain complexity.
Front and rear suspension can add maintenance complexity.
41
Some family utility limitations
Payload capacity is average for this type of e-bike.
Payload capacity is average for this type of e-bike.
The listed maximum payload is practical for lighter utility use.
The listed maximum payload is 136 kg.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
Built-in lights are useful for school runs, errands and daily utility riding.
A removable battery makes charging easier around family or utility use.
Battery capacity is strong compared with similar e-bikes, supporting utility trips.
E-system & battery comparison
Motor Power
600 watts
▲ 160 W above average
Motor Torque
85 Nm
▲ 6.5 Nm above average
Power-to-weight
21.89 W/kg
▲ 1.5 W/kg above average
Battery Capacity
800 Wh
▲ 169 Wh above average
Claimed Max Range
55 miles
▼ 5.5 miles below average
Charge Time
6h
▲ 45 mins slower than average
Sensor Type
Torque and Cadence Sensor
Removable Battery
Yes
Motor Name
Bosch Performance Line CX (Gen 5)
This mountain e-bike offers a strong and responsive motor setup that should feel well-suited for trail riding, with good support for climbing and low-speed control on rough terrain. Against similar e-bikes, the motor output and torque should provide a competitive edge in terms of power and responsiveness, especially when navigating technical trails or steep inclines. The combination of torque and cadence sensing should help deliver a smooth and natural assistance feel, making the motor feel more intuitive and predictable in varied riding conditions. The power-to-weight balance should contribute to a lively and responsive ride, though riders may notice some limitations in range compared to similar models, which could affect longer rides. This motor setup is likely to suit riders looking for strong trail performance with good control and responsiveness, particularly on more demanding terrain.
This explanation is based on the bike’s motor power, torque, battery capacity, claimed range, charging
time, sensor type and how those figures compare with similar e-bikes in our database.
eBike FAQs
Is this bike suitable for long off-road rides?
This mountain e-bike is well-suited for long off-road rides, thanks to its high-capacity battery and robust design for trail riding. However, the range is slightly below average, so you may need to plan for more frequent charging on extended trips. The hydraulic disc brakes offer confident stopping power, and the removable battery adds convenience for charging and storage, though the bike's weight might make lifting it more challenging in certain situations.
How does the motor perform when climbing steep trails?
The motor should provide strong support when climbing steep trails, thanks to its 600W power and 85Nm of torque, which should help with acceleration and maintaining momentum on inclines. However, while the motor is powerful, it may not feel as punchy off the line compared to some competitors, so you might need to manage your speed and effort on very steep sections. The high-capacity 800Wh battery should also give you enough range to tackle longer climbs without needing to recharge mid-ride.
Does the bike handle rough terrain comfortably?
The Trek Powerfly FS+ 4 is designed for mountain biking and should handle rough terrain comfortably, thanks to its mountain bike frame and hydraulic disc brakes, which provide confident stopping power on trails. The bike's weight may make it slightly less agile compared to lighter models, but its high motor power and torque should help with climbing and maintaining control on uneven surfaces.
Is the battery capacity enough for regular trail use?
The 800Wh battery should provide enough range for most regular trail rides, especially given the bike's strong motor support and off-road focus. However, the battery efficiency is average, and the range is slightly below average for similar e-bikes, so longer or more intense rides may require careful planning and additional charging. The removable battery adds convenience for charging and storage, which is helpful for trail users who need flexibility.
How practical is the removable battery for charging and storage?
The removable battery is quite practical for charging and storage, as it allows you to take the battery indoors to charge it safely, which is especially useful if you're riding in wet or muddy conditions. This feature also makes it easier to store the bike in smaller spaces since the battery can be removed when not in use. However, the bike's overall weight might make it slightly more challenging to lift or move when the battery is installed, so the removable design helps with that aspect.
Is this bike good value for the price compared to similar models?
The Trek Powerfly FS+ 4 offers a solid mix of features for a mountain e-bike, including a high-capacity battery, strong motor support, and confident braking, which should appeal to trail riders. While the price is on the higher side, the bike's performance and build quality justify the cost for serious off-road use. However, the slower charging time and slightly below-average range may be considerations for those needing frequent or longer rides. Overall, it's a well-rounded option for trail-focused riders who prioritize power and reliability over convenience factors like charging speed.
What are the main limitations of this bike for serious off-road use?
This bike is well-suited for serious off-road use, but there are a few limitations to consider. The range of 55 miles is below average for mountain e-bikes, which may require more frequent charging on longer rides. Additionally, the bike's weight of 27.41 kg makes it somewhat challenging to lift or carry, especially when transporting. While the motor is powerful and the brakes are confident, the charging time is notably slow, which could be a drawback for riders who need to recharge quickly after a ride.
How does the weight of the bike affect its portability and handling?
The Trek Powerfly FS+ 4 weighs 27.41 kg, which is above average for a mountain e-bike. This weight can make it more challenging to lift, especially when transporting or storing, but it also contributes to a stable and grounded feel on rough trails. While it may not be the easiest to carry, the weight should provide better handling and control on uneven terrain, which is important for off-road riding.
eBike Overview
eBike Type: Mountain Bike
The style of riding intended for this bike
Released:
2026
The bike was released this year
Screen
Bosch Purion 200
Lights Included
Yes
Weight (inc battery): 27.41 kg
The website average for electric bikes is
22.99 kg.
This electric bike is 4.41 kg over the average. Total bike weight may vary depending on frame size.
Sizing & Geometry
Min / Max Rider Height
XS | S 155–165 cm (5′1″–5′5″) | M 165–176 cm (5′5″–5′9″) | L 177–188 cm (5′10″–6′2″) | XL 188–195 cm (6′2″–6′5″)
Adjustable Sizing
Adjustable saddle height
Folded Dimensions
n/a
Wheel & Tire Details
Wheelset Name
Bontrager Line 30 rims (Tubeless Ready) with Shimano TC 500 center-lock hubs
Wheelset Size
27.5 inch
Tires
Bontrager Gunnison Pro XR, Tubeless-Ready, wire bead, 60 tpi, 27.5x2.40"
Frame Info
Frame Material
Aluminium
Suspension Type
Front and Rear suspension
Foldable Frame
No
Max Payload
136 kg (299.8 lbs)
Drivechain Details
Groupset details
Shimano CUES U6000 10-speed
Drivechain type
Chain drive
Shifters
Shimano CUES U 6000, 10-speed
Amount of gears
10 Gears
Rear Derailleur
Shimano CUES U 6000
Front Derailleur
N/A
Cassette
Shimano CUES LG 300, 11-48 T, 10-speed
Cranks
FSA CK-220, 165 mm length
Chain
Shimano LG 500 (LINKGLIDE)
Bottom Bracket
Integrated into the Bosch motor unit
Brakes
Brakes
Tektro Gemini SL 4-piston hydraulic disc brakes with 203 mm CentreLock rotors
Brake Type: Hydraulic Disc Brake
Hydraulic operated discs brakes (Very good)
Brake Rotors
Tektro Gemini SL (HD-M 535)
Shifters
Shimano CUES U 6000, 10-speed
Other Components
Saddle
Unknown
Handlebars
Unknown
Bar Tape
Unknown
Manufactures Info
Worldwide Shipping:
Yes
Delivery across the globe!
Warranty:
2 Years
Limited warranty website average:
3.12 years
The Powerfly FS+ 4 800Wh Equipped 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, and a 10-speed Shimano CUES drivetrain delivers clean-shifts for any kind of trail. It comes ready ... Read More
The Powerfly FS+ 4 800Wh Equipped 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, and a 10-speed Shimano CUES drivetrain delivers clean-shifts for any kind of trail. It comes ready for any adventure, with included mudguards, lights, a rear rack and kickstand. - The Powerfly FS+ gives you the powerful boost you crave on high alpine climbs, confident comfort on descents and a big battery for getting far out there Powerfly FS+ gives you the powerful boost you crave on high alpine climbs, confident comfort on descents, and a big battery for getti - Bosch's 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 Bosch's Performance Line CX motor delivers plenty of torque for s - Its RIB 2.0 removable integrated battery is easy to remove for travel and storage, and its virtually rattle-free while you ride Its RIB 2.0 removable integrated battery is easy to remove for travel and storage, and virtually rattle-free while you rid - Want even more boost? With the Bosch e-Bike Flow app, you can increase torque to 100 Nm and peak power up to 750W. Want even more boost? With the Bosch e-Bike Flow app, you can increase torque to 100Nm and peak power up to 750W. - It's compatible with Bosch PowerMore booster batteries. Parts can be retrofitted by the dealer It's compatible with Bosch PowerMore booster batteries. Parts can be retrofitted by the dealer Removable Integrated Battery 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. Bosch Performance Line CX motor 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. Bosch LED Remote The Bosch smart system LED remote lets you easily change assist modes, activate walk mode or turn on optional lights. The bright LEDs are easy to see in any light, and show you your battery level and assist mode at a glance. Bosch Kiox 300 display The Bosch Kiox 300 is tough, compact and easy to read with a full-colour display. Keep ride data right where you can see it including rider power, motor output, speed, remaining range and more. Adventure-ready accessories 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. A better way to produce aluminium Starting in 2024, we began removing high-emission aluminium from our manufacturing and replacing it with low-emission aluminium made with renewable energy. By October 2025, nearly every alloy bike we make - this one included - had made the switch, driving a major drop in our footprint.
