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 28.85.
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 129.31.
Range is strong despite only average or smaller battery capacity, which supports the efficiency result.
94
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 and cadence sensing should improve how precisely the bike responds to rider input.
With stronger motor output, clear controls and ride modes become more useful.
93
Excellent range-to-weight balance
Range is high compared with similar e-bikes.
Range is high compared with similar e-bikes.
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 3.61.
The calculated range per battery unit is 129.31.
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.
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.
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 9.9 X0 AXS T Type is a capable mountain bike designed for off-road adventures, offering a smooth and powerful ride with its 600W motor and 50Nm of torque. Its front and rear suspension ensures comfort on rough terrain, while hydraulic disc brakes provide confident stopping power. The bike makes good use of its battery, delivering a useful range of 75km on a single charge, though the battery isn't removable, which may limit charging convenience. While it's lightweight and efficient, its lower torque might feel less punchy when climbing steep hills, and the price reflects its premium positioning in the e-bike market.
Best For
✓
This mountain e-bike should suit riders who prioritize performance on trails and rough terrain, offering a balance of power, control and comfort. Its high power-to-weight ratio and responsive motor make it well-suited for riders who want strong assistance without excessive weight, while the hydraulic disc brakes and suspension provide confidence and comfort on uneven surfaces. Riders who value efficient battery use and natural power delivery will also appreciate its design. The bike’s capabilities make it a strong option for serious trail riders looking for a reliable and capable all-terrain e-bike.
Who Should Avoid It
×
Riders who prioritize extended range or need to tackle very steep terrain may want to compare similar mountain e-bikes, as this model has a battery capacity that is below average for its category and a torque rating that is lower than some competitors. Riders who frequently ride in remote areas or require a more powerful motor for aggressive climbs could find stronger options elsewhere. However, the bike still offers a high power-to-weight ratio and excellent braking confidence, which may suit riders focused on performance and control over long off-road rides.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
20
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.
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 20.8 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 129.31.
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 £11,000, the Trek Slash 9.9 X0 AXS T Type sits at the higher end of the mountain bike market for 2025 models. Its premium components and advanced features justify the cost, though buyers should consider whether the investment aligns with their riding needs and frequency.
Compared with similar mountain bike e-bikes on Bikkerr, this model sits £5,341.93 above average
Lowest price now: £7,650.00Best price ever seen:
£5,199.00Price drop detectedPrices update every ~24 hours
The Trek Slash 9.9 X0 AXS T Type is listed at £11,000, which sits at the higher end of the price spectrum when compared with similar mountain e-bikes from 2025. It offers strong motor output and a power-to-weight ratio that feels well balanced for this type of bike, with a range that compares well with many rivals and efficient battery use that helps justify the price. However, some alternatives may offer a larger battery or stronger climbing support, and the non-removable battery could be a drawback for riders who need more flexible charging options. For a mountain e-bike focused on performance and trail control, the value case depends on how much emphasis the rider places on the bike’s lightweight design and responsive power delivery versus the potential trade-offs in battery capacity and charging convenience. Riders prioritising agility, speed and high-end components on technical trails are more likely to see the value in this price point, while those needing extended range or easier battery access may find more flexibility elsewhere.
We reach this value score by combining the bike’s price, specification, performance data and comparison against similar e-bikes in our database.
38
The price/value label suggests this bike is expensive compared with similar options.
The listed price is GBP 11,000.
Against bikes from a similar release year, the price is expensive.
Range is strong compared with similar e-bikes.
Motor power is strong compared with similar e-bikes.
Torque and cadence sensing adds value by improving assist control and ride feel.
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 a practical number of gears for varied riding.
The bike appears to be a recent or current model.
The release age is recent, which supports value if pricing is competitive.
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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.
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.
20
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.
Front and rear suspension can add maintenance complexity.
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.
33
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 a moderate number of gears for climbing.
The bike is lighter than many similar e-bikes, which should help on climbs.
The calculated power-to-weight score is 28.85.
E-system & battery comparison
Motor Power
600 watts
▲ 160 W above average
Motor Torque
50 Nm
▼ 28 Nm below average
Power-to-weight
28.85 W/kg
▲ 8.5 W/kg above average
Battery Capacity
580 Wh
▼ 51 Wh below average
Claimed Max Range
75 miles
▲ 14 miles above average
Charge Time
4h
▼ 75 mins faster than average
Sensor Type
Torque and Cadence Sensor
Removable Battery
No
Motor Name
TQ-HPR 50
This mountain e-bike offers a strong motor output for its category, with a power-to-weight balance that should make the assistance feel more responsive in real riding. Next to similar trail e-bikes, its motor support is competitive, though the torque may be more modest, which could mean steeper climbs require a bit more effort from the rider. The torque and cadence sensor setup should help deliver a natural and predictable assistance feel, especially on technical trails or when navigating rough terrain. The motor’s efficiency and range support look strong against similar models, making it a solid choice for longer rides or trail-focused riding. Riders looking for a responsive motor that balances trail control 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 long off-road rides?
This mountain bike is well-suited for long off-road rides, thanks to its front and rear suspension that should improve comfort on rough terrain. The 600W motor and 50Nm of torque provide strong support for climbing and navigating trails, though the lower torque may feel less punchy on steep inclines. With a range of 75 miles on a single charge, it should handle extended rides, though the non-removable battery may limit charging convenience if you're far from a power source.
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 50Nm of torque. However, the lower torque compared to similar e-bikes may mean you need to manage your effort carefully on very steep or technical climbs. The bike's lightweight design and efficient battery use should help maintain performance, but you may find the motor less punchy than some competitors in the most demanding conditions.
Does the bike offer good comfort on rough terrain?
Yes, the Trek Slash 9.9 X0 AXS T Type should offer good comfort on rough terrain thanks to its front and rear suspension, which should help absorb shocks and vibrations from uneven surfaces. While the bike is designed for off-road use, its lower torque might affect how smoothly it handles very steep or technical trails, but the suspension should still provide a comfortable ride on most rough terrain.
Is the battery efficient enough for regular trail use?
The battery should provide a good range for regular trail use, offering around 75 miles on a single charge. While the battery capacity is below average for this type of e-bike, the efficiency is high, meaning it makes good use of the available capacity. However, the battery isn’t removable, so you’ll need to charge the bike near a power source, which may be less convenient for multi-day trips or long rides away from home.
How practical is this bike for everyday off-road riding?
This bike is well-suited for everyday off-road riding, thanks to its mountain bike design, front and rear suspension, and hydraulic disc brakes that provide confident stopping power on rough terrain. The 600W motor and 75-mile range should support regular trail use, though the non-removable battery may be less convenient for charging. While it's lightweight and efficient, the lower torque might make steep climbs feel slightly less punchy, but overall it's a reliable choice for most off-road conditions.
Is this bike good value for the price compared to similar e-bikes?
This bike is positioned as a premium option in the mountain e-bike market, and its price reflects the high-quality components and performance features. While it offers strong power, efficient battery use, and confident braking, the lower torque and below-average battery capacity may limit its appeal compared to other models in the same price range. If you're looking for a top-tier mountain e-bike with advanced features, it's a solid choice, but there may be more affordable alternatives with better value depending on your priorities.
What are the main limitations of this bike for off-road use?
This bike is well-suited for off-road use, but there are a few limitations to consider. The lower torque compared to similar e-bikes may make steep climbs feel less responsive, and the non-removable battery could be inconvenient if you need to charge it away from home. While the bike offers good range and comfort on rough terrain, its below-average battery capacity might require more frequent charging on longer rides.
How does the braking system handle high-speed descents?
The Trek Slash 9.9 X0 AXS T Type features hydraulic disc brakes, which should provide confident and controlled stopping power even during high-speed descents. These brakes are well-suited for trail conditions and should handle rough terrain effectively. However, braking performance can also depend on factors like tire grip and trail surface, so it's important to ride within your limits and maintain proper brake pad condition for optimal safety.
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 LED display
Lights Included
No
Weight (inc battery): 20.8 kg
The website average for electric bikes is
22.99 kg.
This electric bike is 2.2 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 Pro 30, OCLV Mountain Carbon, Tubeless Ready
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 CUES U4000 9-speed
Drivechain type
Chain drive
Shifters
SRAM AXS Pod Ultimate (2-button)
Amount of gears
9 Gears
Rear Derailleur
SRAM X 0 Eagle AXS, T-Type
Front Derailleur
N/A
Cassette
SRAM XG-1295, T-Type, 10-52, 12-speed
Cranks
Ethirteen Espec Race Carbon (160 mm - 165 mm length depending on size)
Chain
SRAM X 0 Eagle, T-Type, Flattop
Bottom Bracket
Part of the TQ-HPR 50 motor assembly
Brakes
Brakes
SRAM Maven Silver 4-piston hydraulic disc brakes with 200 mm rotors
Brake Type: Hydraulic Disc Brake
Hydraulic operated discs brakes (Very good)
Brake Rotors
200 mm SRAM HS 2 rotors
Shifters
SRAM AXS Pod Ultimate (2-button)
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
Unlock the unrestricted performance of the off-road terrain with the 2025 Slash+ 9.9 X0 AXS T-Type from TREK. This premium e-MTB is designed with superior components to elevate your trail-riding experience with cutting-edge innovation and technology. Designed to conquer the toughest trails, the Slash+ 9.9 X0 AXS T-Type comes with a high-pivot design to support the wheels' optimal movement when encountering rough surfaces, ensuring you maintain mo ... Read More
Unlock the unrestricted performance of the off-road terrain with the 2025 Slash+ 9.9 X0 AXS T-Type from TREK. This premium e-MTB is designed with superior components to elevate your trail-riding experience with cutting-edge innovation and technology. Designed to conquer the toughest trails, the Slash+ 9.9 X0 AXS T-Type comes with a high-pivot design to support the wheels' optimal movement when encountering rough surfaces, ensuring you maintain momentum with insane traction. This bike's innovative high-pivot suspension pairs perfectly with a RockShox Ultimate suspension package delivering 170 mm of smooth-front and rear travel, enabling you to tackle obstacles with control and precision. The heart of this MTB beast is the ultra-quiet, light and compact TQ HPR50 motor producing 50Nm and 250W of power. This efficient motor, paired with a 580Wh battery, lets you traverse climbs with ease, increasing your endurance and allowing for a full day of adventure on the trails. Further enhancing the ride quality, the bike comes equipped with Bontrager Line Pro 30 OCLV Mountain Carbon wheels (29"" front, 27.5"" rear) that deliver unbeatable toughness for handling the rough. A RockShox Reverb dropper post, SRAM Maven Silver 4-piston brakes and a wireless electronic SRAM X0 AXS direct mount transmission ensure a superior performance, making your ride untouchable. And for those wanting to ride further and faster, the Slash+ 9.9 X0 AXS T-Type allows you to customise your motor's support, log your miles, and map out rides through the Trek Central app. Plus, the bike incorporates an internal battery that resists rock hits but can be easily removed if needed, enhancing both convenience and resilience. Experience the relentless force of gravity on the descents and the power-assist to conquer the steep climbs with the Slash+ 9.9 X0 AXS T-Type. Expect nothing short of brilliance with unparalleled control, efficiency and durability honed to encourage your adrenaline-soaked expeditions.
