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 27.49.
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.
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.
78
Useful removable battery
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.
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.
72
Good smooth power delivery
Torque and cadence sensing should help the motor deliver more natural and controlled assistance.
Torque and cadence sensing should help the motor deliver more natural and controlled assistance.
Multiple ride modes should help riders choose a smoother level of assistance.
The included display or control unit should make it easier to manage assistance levels.
Motor power is high, so smooth delivery depends heavily on good sensing and control.
Overview
The Trek Slash+ 9.9 is a capable mountain e-bike built for trail riding, with a powerful motor and responsive handling that makes it feel lively on rough terrain. Its hydraulic disc brakes offer confident stopping power, while front and rear suspension smooth out uneven surfaces for better comfort. The removable battery adds convenience for charging and storage, though the relatively small battery capacity means you'll need to plan for more frequent recharging on longer rides. While the motor provides strong support, the lower torque might feel less punchy when climbing steep hills, and the high price point may not offer the best value for all buyers.
Best For
✓
This mountain e-bike should suit riders who prioritize confident off-road performance and responsive assistance on technical trails. Its high power-to-weight ratio and smooth power delivery make it well-suited for trail riding where control and natural assistance are important. The hydraulic disc brakes and front and rear suspension also provide comfort and confidence on rougher surfaces. Riders who value the flexibility of a removable battery for charging away from the bike may also appreciate this feature.
Who Should Avoid It
×
Riders who prioritize extended range or need to tackle steep terrain may want to compare alternatives, as the battery capacity and torque are below average for similar mountain e-bikes. The bike’s charging speed and braking confidence are strong, so it may still suit riders focused on performance and control over long-distance capability or heavy climbing.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
27
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.
A removable battery makes charging, storage and battery care easier.
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.
5
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.
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.
55
Mixed liftability
Mixed
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 21.83 kg.
The carbon frame material should help keep weight down.
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.
78
Useful removable battery
Good
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.
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.
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 86.21.
69
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.
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.
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.
A removable battery makes charging easier around family or utility use.
Where to buy
The Trek Slash+ 9.9 is listed at £9,000, which looks demanding when compared to similar mountain bikes from 2026. It offers high-end components and performance, but the price may be a consideration for buyers seeking more affordable options in the category.
Compared with similar mountain bike e-bikes on Bikkerr, this model sits £3,341.93 above average
The Trek Slash+ 9.9 is listed at £9,000, which places it at the higher end of the price spectrum when compared with similar mountain e-bikes from 2026. It offers strong motor output for this type of e-bike, with a power-to-weight ratio that feels favourable, and features like hydraulic braking, torque-sensing assistance, and front and rear suspension that support control and comfort on rougher terrain. However, some similar e-bikes may offer more range or a larger battery, which could be a consideration for riders who prioritise endurance or longer rides. For this type of mountain e-bike, the package feels well-rounded, but the price is easier to understand if the rider values performance and handling over extended range. Riders who prioritise responsiveness, control and a lightweight feel on technical trails are most likely to see the value in this bike.
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 9,000.
Against bikes from a similar release year, the price is expensive.
Motor power is strong compared with similar e-bikes.
Same power25 miles more range21 Wh more battery1 kg lighterSame gears
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Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
4
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 average or better, which is useful for regular commuting.
Built-in lights are not listed, so commuting equipment may need adding.
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 lighter than many similar e-bikes, which helps with daily handling.
Front and rear suspension can add weight and complexity for normal commuting.
5
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.
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.
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.
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.
27
Limited longer-ride suitability
Range is below average compared with similar e-bikes, so longer rides may need more planning.
Range is below average compared with similar e-bikes, so longer rides may need more planning.
Battery capacity is low compared with similar e-bikes.
Battery efficiency appears broadly average.
The removable battery can make charging easier during longer days or multi-stop rides.
Charging time is shorter than average, which can help if topping up between rides.
The display or control unit should make it easier to monitor assistance and battery use on longer rides.
27
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.
A removable battery makes charging, storage and battery care easier.
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.
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.
A removable battery makes charging easier around family or utility use.
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 86.21.
E-system & battery comparison
Motor Power
600 watts
▲ 160 W above average
Motor Torque
60 Nm
▼ 18 Nm below average
Power-to-weight
27.49 W/kg
▲ 7.1 W/kg above average
Battery Capacity
580 Wh
▼ 51 Wh below average
Claimed Max Range
50 miles
▼ 11 miles below average
Charge Time
3h 30m
▼ 105 mins faster than average
Sensor Type
Torque and Cadence Sensor
Removable Battery
Yes
Motor Name
TQ-HPR 60
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 torque is more modest, which may mean steeper climbs require a bit more effort from the rider. The motor should provide predictable support on technical trails, with torque and cadence sensing helping to balance natural response with control. Riders looking for a lively, responsive motor that feels integrated with the bike's trail-focused design may find this setup suits them well, though those prioritizing maximum climbing or low-speed push might consider alternatives with higher torque.
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?
The Trek Slash+ 9.9 is well-suited for off-road trails, thanks to its mountain bike design, hydraulic disc brakes, and front and rear suspension that help smooth out rough terrain. However, the battery capacity is below average, so you may need to plan for more frequent recharging on longer rides. The motor provides strong support for trail riding, but the lower torque might make steep climbs feel a bit less punchy.
How does the motor perform when climbing steep trails?
The motor provides strong support for climbing steep trails, thanks to its 600W power output and high power-to-weight ratio. However, the lower torque of 60Nm may feel less punchy when tackling very steep or technical climbs, requiring more effort from the rider. The motor should still offer useful assistance, but riders aiming for the most aggressive climbs might find the performance slightly limited compared to bikes with higher torque ratings.
Does the battery last long enough for multi-day adventures?
The battery capacity is below average for a mountain e-bike, providing a range of around 50 miles on a single charge. This means you'll likely need to carry a spare battery or plan for regular recharging during multi-day adventures. The removable battery adds convenience for charging, but the lower capacity may limit how far you can go without stopping to recharge.
How comfortable is the bike on rough and uneven terrain?
The Trek Slash+ 9.9 should handle rough and uneven terrain comfortably, thanks to its front and rear suspension that smooths out bumps and uneven surfaces. While the motor provides strong support for trail riding, the lower torque may feel less punchy when navigating particularly challenging sections. Overall, it's a solid choice for riders looking for a comfortable and capable mountain e-bike on varied trails.
Is this bike good value for its price compared to similar e-bikes?
The Trek Slash+ 9.9 has a high price point, and while it offers strong power and confident braking for off-road use, its battery capacity is below average, which may require more frequent charging on longer rides. The motor provides good support for trail riding, but the lower torque might limit performance on steep climbs. Considering these factors, it may not offer the best value for all buyers, especially those looking for longer range or more climbing power at this price.
How easy is it to charge and maintain the battery?
The battery is removable, which makes charging convenient, especially if you're riding in remote areas or need to swap it out quickly. However, the battery capacity is below average, so you'll need to recharge more frequently on longer rides. Maintenance is straightforward, and the battery should last for several years with proper care.
Who is this bike best suited for?
This bike is best suited for experienced off-road riders who prioritize power and braking confidence over long-range capabilities. The high motor power and hydraulic disc brakes make it ideal for tackling challenging trails and rough terrain, while the removable battery adds convenience for charging. However, the lower battery capacity and torque may require more frequent recharging and careful planning for extended rides or steep climbs.
What are the main compromises of this bike compared to others in its category?
Compared to other mountain e-bikes, the Trek Slash+ 9.9 has a smaller battery capacity, which means you'll need to recharge more often on longer rides. It also has lower torque, which might make steep climbs feel a bit less responsive. While the motor is powerful for its weight, the overall value may not be as strong as some competitors, especially considering the high price point. These factors could be important if you're looking for extended range or more aggressive hill-climbing performance.
eBike Overview
eBike Type: Mountain Bike
The style of riding intended for this bike
Released:
2026
The bike was released this year
Screen
TQ color LED display with Bluetooth & ANT+ connectivity
Lights Included
No
Weight (inc battery): 21.83 kg
The website average for electric bikes is
22.99 kg.
This electric bike is 1.17 kg under 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 Pro 30, OCLV Mountain Carbon, Tubeless Ready
Ethirteen Espec Race Carbon, 160 mm-165 mm length (size dependent)
Chain
SRAM X 0 Eagle, T-Type, Flattop
Bottom Bracket
Integrated with the TQ-HPR 60 motor unit
Brakes
Brakes
SRAM Maven Silver 4-piston hydraulic disc brakes with SRAM HS2 200 mm rotors
Brake Type: Hydraulic Disc Brake
Hydraulic operated discs brakes (Very good)
Brake Rotors
SRAM Maven Silver 4-piston
Shifters
SRAM AXS Pod Ultimate (two-button wireless)
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 Slash+ 9.9 is our cream of the crop mid-assist enduro e-MTB. It comes stacked with TQ's HPR60 motor and a 580 Wh battery for giving you a smooth boost for point-to-point rides or chasing down extra laps. You get an OCLV Mountain Carbon frame speced with all the best parts, like a RockShox Ultimate suspension package, carbon wheels, SRAM X0 Eagle AXS wireless transmission and a RockShox Reverb AXS wireless dropper post. High-pivot suspension T ... Read More
The Slash+ 9.9 is our cream of the crop mid-assist enduro e-MTB. It comes stacked with TQ's HPR60 motor and a 580 Wh battery for giving you a smooth boost for point-to-point rides or chasing down extra laps. You get an OCLV Mountain Carbon frame speced with all the best parts, like a RockShox Ultimate suspension package, carbon wheels, SRAM X0 Eagle AXS wireless transmission and a RockShox Reverb AXS wireless dropper post. High-pivot suspension The Slash's high main pivot allows the axle to move rearward as the suspension compresses, so the back wheel moves with the force from bumps and gets out of the way faster. On the trail, it feels ultra-smooth while maintaining more momentum with insane traction. Curb the kickback The Slash+'s oversized upper idler not only eliminates pedal kickback caused by high pivot suspension, but its size and position also give you just the right amount of anti-squat for efficient pedalling. The integrated lower chain guide takes chain tension off the derailleur, so you get smoother shifting and suspension performance. Mixed wheel size You get a 29" front wheel for monster truckin' over stuff, with a smaller 27.5" wheel out back for getting rowdy. Adjust the suss for full send Adjust the leverage rate with just a flip of a chip. Ride it in the Less progressive setting for a plusher feel perfect for rugged trails with square-edge bumps. Flip it to More progressive when you're hitting big features and don't want to bottom-out, or when you want to run a coil shock. Slack or steep, the choice is yours Install angle-adjust headset cups (sold separately) to tweak the head tube angle a degree steeper or slacker to your liking - all without impacting your bottom bracket height. TQ-HPR50 - small, quiet, mighty The TQ-HPR50 motor is super-efficient with an amazing power-to-weight ratio. Most motors use gears and belts that take up space and can make noise or break. The TQ-HPR50 uses a harmonic pin-ring drive transmission that's small, ultra-quiet and unbelievably natural-feeling.
