Highlights based on this e-bike’s specs, comparisons and practical strengths.
100
Excellent braking confidence
Hydraulic disc brakes should provide strong and controlled stopping power.
Hydraulic disc brakes should provide strong and controlled stopping power.
The brake specification mentions four-piston brakes, which should improve stopping power and control.
The brake specification appears to include larger rotors, which can help braking power and heat management.
100
Excellent power-to-weight ratio
Power-to-weight is high compared with similar e-bikes.
Power-to-weight is high compared with similar e-bikes.
Motor power is high for this type of e-bike.
The bike is lighter than many similar e-bikes, which helps the power-to-weight balance.
The calculated power-to-weight score is 30.
100
Excellent battery efficiency
The bike appears to get strong range from its battery size.
The bike appears to get strong range from its battery size.
The calculated range per battery unit is 120.69.
Range is strong despite only average or smaller battery capacity, which supports the efficiency result.
91
Excellent technical trail control
The mountain bike design is well suited to technical trail control.
The mountain bike design is well suited to technical trail control.
Front and rear suspension should significantly improve control on technical trails.
Hydraulic disc brakes should provide the control needed for technical trail riding.
The brake specification mentions four-piston brakes, which should improve control on steeper or rougher trails.
The brake specification appears to include larger rotors, which can help braking power and heat management.
The 27.5-inch wheel size should help balance control and manoeuvrability.
Torque is low compared with similar e-bikes, which may limit technical climbing and control.
Torque-sensing assistance should help with smoother control on technical sections.
Power-to-weight is strong, which should help with technical sections that need quick support.
Multiple ride modes should help the rider manage assistance on technical trails.
91
Excellent rider information and controls
The included display or control unit should give useful ride information and control.
The included display or control unit should give useful ride information and control.
Multiple ride modes should give the rider more control over assistance levels.
Torque sensing should improve control by responding to rider effort.
With stronger motor output, clear controls and ride modes become more useful.
86
Excellent downhill control
Front and rear suspension should improve control and confidence on descents.
Front and rear suspension should improve control and confidence on descents.
Hydraulic disc brakes should provide controlled braking on descents.
The mountain bike design should be better suited to controlled descending.
85
Excellent range-to-weight balance
Range is above average for this type of e-bike.
Range is above average for this type of e-bike.
The bike is lighter than average for its type.
Battery efficiency appears strong, which supports a better range-to-weight balance.
Range is strong without needing an unusually large battery, which supports efficiency.
The calculated range per kg is 3.5.
The calculated range per battery unit is 120.69.
81
Good charging speed
Charging time is low compared with similar e-bikes.
Charging time is low compared with similar e-bikes.
The quoted charging time is long in absolute terms.
79
Good off-road capability
The mountain bike design should be well suited to off-road riding.
The mountain bike design should be well suited to off-road riding.
Front and rear suspension should improve control and comfort off-road.
Hydraulic disc brakes should help with control on loose or uneven terrain.
Torque is low compared with similar e-bikes, which may limit off-road climbing support.
The 27.5-inch wheel size is a strong option for off-road control and manoeuvrability.
76
Good rough-road comfort
Front and rear suspension should significantly improve comfort on rough roads and uneven surfaces.
Front and rear suspension should significantly improve comfort on rough roads and uneven surfaces.
The larger wheel size should help roll over bumps and rough surfaces more smoothly.
The mountain bike format is generally better suited to rougher terrain.
Hydraulic disc brakes add useful control on rougher routes.
Frame material is listed as carbon fiber, which gives useful comfort and build context.
Overview
The Trek Slash 9.7 SLX XT is a capable mountain e-bike built for trail riding, offering a responsive feel with its powerful motor and efficient battery use. Its hydraulic disc brakes provide confident stopping power, while front and rear suspension make rough terrain more comfortable. The bike's lightweight carbon frame contributes to a lively ride, though its lower battery capacity may limit longer adventures. Charging is reasonably quick, but the non-removable battery means you'll need to keep the whole bike near a power source. Overall, it's a well-rounded choice for serious off-road riders who prioritize performance over extended range.
Best For
✓
This mountain e-bike should suit riders who prioritize off-road performance and comfort on rougher trails. Its high power-to-weight ratio and responsive motor make it a strong choice for trail riding, while the hydraulic disc brakes and suspension system provide confidence and control on uneven terrain. Riders who value efficient battery use and a natural riding feel will also appreciate its design and features.
Who Should Avoid It
×
Riders seeking extended battery life or stronger hill-climbing performance may want to compare similar mountain e-bikes. The battery capacity is below average for this type of bike, and the torque is lower than some competitors, which could affect performance on steep terrain. However, the bike still offers a strong power-to-weight ratio and confident braking, making it a solid choice for riders prioritizing agility and control on technical trails.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
16
More maintenance likely
Poor
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.
Tyres are listed, but there is no clear puncture-protection signal.
The carbon frame material can be lightweight, though damage checks may need more care.
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 lighter than many similar e-bikes, which should make storage and moving it around easier.
A full-suspension mountain bike format is usually bulkier and harder to store indoors.
45
Some lifting limitations
Weak
The bike is lighter than average for its type, which should help day-to-day handling.
The bike is lighter than average for its type, which should help day-to-day handling.
The listed weight is 20 kg.
The carbon frame material should help keep weight down.
The mountain bike format can be bulkier and harder to lift than simpler urban e-bikes.
6
No removable battery advantage
Poor
The battery does not appear to be removable, so the whole bike may need to be near a charging point.
The battery does not appear to be removable, so the whole bike may need to be near a charging point.
This bike type can be larger or heavier, so a removable battery adds useful charging flexibility.
81
Good charging speed
Good
Charging time is low compared with similar e-bikes.
Charging time is low compared with similar e-bikes.
The quoted charging time is long in absolute terms.
100
Excellent battery efficiency
Excellent
The bike appears to get strong range from its battery size.
The bike appears to get strong range from its battery size.
The calculated range per battery unit is 120.69.
Range is strong despite only average or smaller battery capacity, which supports the efficiency result.
51
Decent everyday equipment
Mixed
The included display or control unit adds useful ride information for daily use.
The included display or control unit adds useful ride information for daily use.
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.
48
Some bad-weather limitations
Weak
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 not listed, so bad-weather visibility may depend on extra accessories.
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 wheel size should be workable for regular poor-weather riding, depending on tyre choice.
Frame material is listed as carbon fiber, which gives useful durability and maintenance context.
28
Limited family utility practicality
Poor
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.
Range is average or better compared with similar e-bikes, which supports practical daily use.
Where to buy
Priced at £4,999, the Trek Slash 9.7 SLX XT looks favourably positioned against similar 2025 mountain bikes, offering strong component spec and performance. Its main trade-off may be the higher price point relative to some broader category options.
Compared with similar mountain bike e-bikes on Bikkerr, this model sits £659.07 below average
Lowest price now: £5,333.00Best price ever seen:
£4,999.00Price drop detectedPrices update every ~24 hours
Priced at £4,999, this Trek Slash 9.7 SLX XT sits comfortably against similar mountain e-bikes from 2025, with its price looking favourable when compared to rivals in the same category. It holds its own with a strong motor output, efficient battery use and a lightweight design that supports its performance on rough terrain, while hydraulic disc brakes and torque-sensing assistance add to its appeal for off-road riding. However, some alternatives may offer a larger battery or stronger climbing support, and the non-removable battery could limit charging flexibility for certain riders. For a mountain e-bike focused on trail performance and lightweight efficiency, the value case is clear, especially for riders who prioritise agility and control over maximum range. Buyers looking for a more flexible charging setup or extended battery life may find other options more suitable, but for those focused on trail-ready performance, this bike offers a compelling balance of power and weight.
We reach this value score by combining the bike’s price, specification, performance data and comparison against similar e-bikes in our database.
50
The listed price is GBP 4,999.
Range is strong compared with similar e-bikes.
Motor power is strong compared with similar e-bikes.
Same power5 miles more range21 Wh more battery1 kg heavierSame gears
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Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
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 lighter than many similar e-bikes, which should make storage and moving it around easier.
A full-suspension mountain bike format is usually bulkier and harder to store indoors.
3
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 average or better compared with similar e-bikes, which supports commuting practicality.
Charging time is average or better, which is useful for regular commuting.
Built-in lights are not listed, so commuting equipment may need adding.
A non-removable battery can make charging less flexible.
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 lighter than many similar e-bikes, which helps with daily handling.
Front and rear suspension can add weight and complexity for normal commuting.
5
No built-in light advantage
Built-in lights are not listed, so separate lights may be needed.
Built-in lights are not listed, so separate lights may be needed.
The display or control unit may make light and ride-status management easier.
6
No removable battery advantage
The battery does not appear to be removable, so the whole bike may need to be near a charging point.
The battery does not appear to be removable, so the whole bike may need to be near a charging point.
This bike type can be larger or heavier, so a removable battery adds useful charging flexibility.
16
More maintenance likely
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.
Tyres are listed, but there is no clear puncture-protection signal.
The carbon frame material can be lightweight, though damage checks may need more care.
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.
19
Low battery capacity
Battery capacity is below average for this type of e-bike.
Battery capacity is below average for this type of e-bike.
The listed battery capacity should be practical for regular riding.
28
Limited family utility practicality
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.
Range is average or better compared with similar e-bikes, which supports practical daily use.
38
Some hill climbing limitations
Torque is low compared with similar e-bikes.
Torque is low compared with similar e-bikes.
Power-to-weight is high compared with similar e-bikes.
Motor power is high compared with similar e-bikes.
The torque-sensing assistance should help the bike respond more naturally on climbs.
The bike has 10 or more gears, which should help on varied climbs.
The bike is lighter than many similar e-bikes, which should help on climbs.
The calculated power-to-weight score is 30.
E-system & battery comparison
Motor Power
600 watts
▲ 160 W above average
Motor Torque
50 Nm
▼ 28 Nm below average
Power-to-weight
30.00 W/kg
▲ 9.6 W/kg above average
Battery Capacity
580 Wh
▼ 51 Wh below average
Claimed Max Range
70 miles
▲ 9.5 miles above average
Charge Time
4h
▼ 75 mins faster than average
Sensor Type
Torque Sensor
Removable Battery
No
Motor Name
TQ-Systems HPR 50
This mountain e-bike offers a strong motor output for its category, with a torque-sensing system that should make the assistance feel natural and proportional to rider effort. Next to similar trail e-bikes, its power-to-weight balance should help the motor feel more responsive, though its torque may be more modest than some alternatives, which could mean steeper climbs require a bit more rider input. The motor should provide good support for technical riding and rough terrain, with efficient battery use helping maintain a strong range for the type of bike. The torque sensor and likely ride modes should give riders control over how the assistance feels, making it adaptable for different trail conditions. Riders looking for a responsive motor that balances trail capability with efficient battery use may find this setup well-suited to their needs.
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 challenging off-road trails?
This mountain e-bike is well-suited for challenging off-road trails, thanks to its hydraulic disc brakes, which provide confident stopping power, and its front and rear suspension, which improves comfort on rough terrain. The powerful 600W motor should help with climbing, though the lower torque may require some effort on very steep sections. With a range of 70 miles, it should handle most trail rides, but the non-removable battery means you'll need to charge the whole bike near a power source.
How does the motor perform when climbing steep hills?
The motor should provide strong support when climbing steep hills, thanks to its 600W power and efficient use of energy. However, the lower torque of 50Nm may mean you'll need to manage your speed and gear selection carefully on very steep or technical climbs. The lightweight frame helps with acceleration, but the motor's performance will depend on how you use the assistance levels and the terrain's difficulty.
Does the bike offer enough range for long mountain biking sessions?
The Trek Slash 9.7 SLX XT offers a range of around 70 miles, which is above average for a mountain e-bike and should handle most long trail rides. However, its battery capacity is below average, so if you're planning extremely long sessions or multiple days of riding without access to charging, you may need to plan for additional batteries or shorter rides. The efficient battery use and quick charging time help mitigate some of these limitations, making it a solid choice for most mountain biking adventures.
How comfortable is the bike on rough terrain and uneven trails?
The Trek Slash 9.7 SLX XT should handle rough terrain and uneven trails comfortably, thanks to its front and rear suspension system, which should significantly reduce the impact of bumps and uneven surfaces. While the bike's lightweight frame contributes to a lively ride, the suspension should help maintain control and comfort on technical trails. However, the lower battery capacity may limit how far you can ride on a single charge, especially if you're tackling longer or more demanding trails.
Is the battery easy to charge, and how long does it take to fully charge?
The battery is not removable, so you'll need to charge the bike as a whole, which is straightforward but less convenient if you're away from a power source. It charges relatively quickly compared to similar e-bikes, so you shouldn't wait too long for a full charge. However, the lower battery capacity means you may need to recharge more frequently on longer rides.
Is this bike a good value for its price compared to similar e-bikes?
The Trek Slash 9.7 SLX XT offers strong performance for its price, especially with its high power-to-weight ratio and efficient battery use, which should help with both climbing and range. However, the lower battery capacity and non-removable design may limit longer rides or charging convenience. While it's not the cheapest option, it delivers solid off-road capability and braking confidence, making it a fair value for serious mountain bikers who prioritize performance over extended range.
How does the braking system perform on technical descents?
The Trek Slash 9.7 SLX XT features hydraulic disc brakes, which should provide confident and controlled stopping power on technical descents. These brakes are well-suited for trail riding and should handle rough terrain effectively, though performance may depend on conditions like wet surfaces or heavy use. The bike's suspension also helps maintain stability, making it a solid choice for off-road braking scenarios.
What are the main limitations or trade-offs of this bike?
The main limitations of this bike include its non-removable battery, which means you'll need to keep the whole bike near a power source for charging. It also has a lower-than-average battery capacity, which may limit range on longer rides. While the motor is powerful, the torque is on the lower side, which could make steep climbs feel slightly less responsive. However, the bike's lightweight design and strong braking system help balance these trade-offs for most trail riding scenarios.
eBike Overview
eBike Type: Mountain Bike
The style of riding intended for this bike
Released:
2025
The bike was released 1 years ago
Screen
TQ top tube display
Lights Included
No
Weight (inc battery): 20 kg
The website average for electric bikes is
22.99 kg.
This electric bike is 3 kg under the average. Total bike weight may vary depending on frame size.
Sizing & Geometry
Min / Max Rider Height
XS 137 – 155 cm (4'6" – 5'1") | S 153 – 166.5 cm (5'0" – 5'6") | M 161 – 172 cm (5'3.5" – 5'7.5") | L 165.5 – 179 cm (5'5" – 5'10.5") | XL 186 – 196 cm (6'1" – 6'5")
Adjustable Sizing
Adjustable saddle height
Folded Dimensions
n/a
Wheel & Tire Details
Wheelset Name
Bontrager Line Comp 30
Wheelset Size
27.5 inch
Tires
BONTRAGER,
Frame Info
Frame Material
Carbon Fiber
Suspension Type
Front and Rear suspension
Foldable Frame
No
Max Payload
136 kg (299.8 lbs)
Drivechain Details
Groupset details
Shimano XT M8100 12-speed
Drivechain type
Chain drive
Shifters
Shimano SLX M 7100, 12-speed
Amount of gears
12 Gears
Rear Derailleur
Shimano XT M 8100
Front Derailleur
None
Cassette
Shimano SLX M 7100 10-51T
Cranks
Shimano XT M 8100
Chain
Shimano SLX M 7100
Bottom Bracket
Integrated TQ system (HPR 50)
Brakes
Brakes
Shimano M6100 lever with M6120 4-piston hydraulic disc calipers and Shimano RT66 203 mm rotors
Brake Type: Hydraulic Disc Brake
Hydraulic operated discs brakes (Very good)
Shifters
Shimano SLX M 7100, 12-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
Unlike most motors, the TQ-HPR50 uses a harmonic pin-ring drive transmission which ensures minimal noise interference, delivering an incredibly natural feel when you ride. This compact and lightweight motor supports gruelling climbs and ensures seamless blending with traditional bikes on the trail. Trek Central App The Slash+ 9.7 SLX/XT also pairs up easily with the Trek Central app. This allows you to customise your motor's support, map out your ... Read More
Unlike most motors, the TQ-HPR50 uses a harmonic pin-ring drive transmission which ensures minimal noise interference, delivering an incredibly natural feel when you ride. This compact and lightweight motor supports gruelling climbs and ensures seamless blending with traditional bikes on the trail. Trek Central App The Slash+ 9.7 SLX/XT also pairs up easily with the Trek Central app. This allows you to customise your motor's support, map out your rides, log miles, and discover new ways to enhance your biking experience. It's the perfect companion for those who are serious about their rides. Shielded Internal Battery The Slash+ 9.7 SLX/XT houses an internal battery that's effectively shielded from roots, rocks, and other potential impact hazards, ensuring a worry-free ride each time. The battery can also be conveniently removed with just a multi-tool. Planning for a long ride? You always have the option to add a range extender for the extra power boost when you need it. In conclusion, the Slash+ 9.7 SLX/XT is an enduro e-bike for those who want an uncompromised ride. Its high-pivot suspension, harmonic pin-ring drive transmission, and superb app connectivity, combined with a sturdy yet lightweight carbon frame and powerful TQ HPR50 motor, set a high standard in e-MTB performance. Whether you're tackling tough climbs or mastering downhill trails, this bike is crafted to help you excel. Experience the difference of the Slash+ 9.7 SLX/XT today!
