Highlights based on this e-bike’s specs, comparisons and practical strengths.
100
Excellent battery capacity
Battery capacity is high compared with similar e-bikes.
Battery capacity is high compared with similar e-bikes.
The listed battery capacity is large in absolute terms.
89
Excellent 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 suspension should help absorb bumps on rougher surfaces.
Hydraulic disc brakes should help with control on loose or uneven terrain.
Torque is strong compared with similar e-bikes, which should help on loose or uneven climbs.
The 29-inch wheel size should help rollover and stability on rougher terrain.
89
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.
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.
88
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.
87
Excellent 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.
86
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 appears to include larger rotors, which can help braking power and heat management.
85
Excellent for longer rides
Range is high compared with similar e-bikes, which is one of the strongest signs it should suit longer rides.
Range is high compared with similar e-bikes, which is one of the strongest signs it should suit longer rides.
Battery capacity is strong 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 longer than average, which may be less convenient for back-to-back longer rides.
The display or control unit should make it easier to monitor assistance and battery use on longer rides.
80
Good 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 suspension should help with control over roots, bumps and rougher sections.
Hydraulic disc brakes should provide the control needed for technical trail riding.
The 29-inch wheel size should help rollover and stability on technical terrain.
Torque is above average for this type of e-bike.
Torque-sensing assistance should help with smoother control on technical sections.
Multiple ride modes should help the rider manage assistance on technical trails.
77
Good 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 suspension should help the bike stay controlled over bumps and rougher paths.
Hydraulic disc brakes should improve control on loose or uneven trails.
The 29-inch wheel size should help rollover and stability on trails.
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.
75
Good downhill control
Front suspension should help with basic control on uneven descents.
Front suspension should help with basic control on uneven descents.
Hydraulic disc brakes should provide controlled braking on descents.
The 29-inch or mullet wheel setup should help stability and control on descents.
The mountain bike design should be better suited to controlled descending.
Overview
The CUBE Reaction Hybrid SLX 800 is a mountain bike designed for off-road adventures, offering a smooth and controlled power delivery that makes it easy to tackle varied terrain. With a high-capacity battery and removable design, it provides good range and flexibility for longer rides, though charging takes longer than some competitors. The hydraulic disc brakes offer confident stopping power, but the bike's weight and motor power mean it's better suited for moderate trails rather than steep climbs. It's a solid choice for riders who prioritize trail capability and battery convenience over rapid acceleration or lightweight performance.
Best For
✓
This mountain e-bike should suit riders who prioritize off-road capability and want a reliable companion for trail riding. Its high battery capacity and smooth power delivery make it a strong choice for longer rides on uneven terrain, while the hydraulic disc brakes and front suspension add confidence and comfort over rough trails. The removable battery also offers flexibility for charging away from the bike, which is especially useful for riders who travel to remote riding areas.
Who Should Avoid It
×
Riders seeking the most aggressive motor punch or faster charging times may be better served by alternatives. The motor power and power-to-weight ratio are below average for similar mountain e-bikes, which could affect performance on steep or technical trails. Additionally, the charging time is notably longer compared to similar models, which may be a drawback for riders who need to recharge quickly. However, the bike still offers strong battery capacity, smooth power delivery and good off-road capability for most mountain e-bike use cases.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
49
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.
The tyre description suggests puncture protection, which should reduce maintenance interruptions.
The aluminium frame material is practical for everyday use and general maintenance.
The mountain bike format may involve more wear from rougher riding and more complex components.
A higher number of gears can add drivetrain complexity.
7
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 removable battery can make storage and indoor charging more flexible.
24
Harder to lift
Poor
The bike weight is average for this type of e-bike.
The bike weight is average for this type of e-bike.
The listed weight is 24.3 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 29-inch wheel size can make the bike more awkward to lift or store.
The larger-than-average battery capacity may add weight.
89
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.
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 high compared with similar e-bikes.
Charging time is high 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 93.75.
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.
53
Mixed bad-weather practicality
Mixed
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 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.
40
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 125 kg.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
A removable battery makes charging easier around family or utility use.
Battery capacity is strong compared with similar e-bikes, supporting utility trips.
Range is average or better compared with similar e-bikes, which supports practical daily use.
Where to buy
The CUBE Reaction Hybrid SLX 800 is priced at £3,499, which feels favourable compared to similar 2025 mountain e-bikes, particularly for its battery capacity, torque support and braking performance. While it offers strong range and trail control, its 6.5-hour charge time is slower than some competitors, which may be a consideration for riders prioritising speed.
Compared with similar mountain bike e-bikes on Bikkerr, this model sits £1,804.41 below average
The CUBE Reaction Hybrid SLX 800 is listed at £3,499, which sits comfortably against similar mountain e-bikes from 2025, offering a price that feels reasonable for the features included. It compares well with rivals in terms of range, battery capacity and torque support, which should help with hill climbing and trail control. However, some similar e-bikes may feel more responsive for their weight, and the 6.5-hour charge time is a bit slower than what some competitors offer. For a mountain e-bike focused on trail performance and reliability, the balance of battery, torque and braking makes the price easier to understand, especially if you prioritise control and range over speed. Riders looking for a dependable, well-rounded mountain e-bike with strong support for off-road use are likely to see the value in this package.
We reach this value score by combining the bike’s price, specification, performance data and comparison against similar e-bikes in our database.
60
The listed price is GBP 3,499.
The bike appears to save around GBP 1,164 versus the average.
Range is strong compared with similar e-bikes.
Battery capacity is strong compared with similar e-bikes.
350W more powerSame range0 Ah less battery1 kg heavierSame gears
Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
0
Limited motor punch
Motor power is low compared with similar e-bikes.
Motor power is low compared with similar e-bikes.
Torque is above average for this type of e-bike.
Power-to-weight is low.
Torque-sensing assistance should make the motor response feel more natural.
The calculated power-to-weight score is 10.29.
0
Low power-to-weight ratio
Power-to-weight is low compared with similar e-bikes.
Power-to-weight is low compared with similar e-bikes.
Motor power is low compared with similar e-bikes.
The calculated power-to-weight score is 10.29.
0
Very slow charging speed
Charging time is high compared with similar e-bikes.
Charging time is high compared with similar e-bikes.
The quoted charging time is long in absolute terms.
5
Not ideal for steep hills
Torque is above average for this type of e-bike.
Torque is above average for this type of e-bike.
Power-to-weight is low.
Motor power is low 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 calculated power-to-weight score is 10.29.
5
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 longer than average, which may be less convenient for daily use.
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.
7
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 removable battery can make storage and indoor charging more flexible.
11
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.
Battery capacity is average or better for this type of e-bike, supporting everyday powered accessories.
24
Harder to lift
The bike weight is average for this type of e-bike.
The bike weight is average for this type of e-bike.
The listed weight is 24.3 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 29-inch wheel size can make the bike more awkward to lift or store.
The larger-than-average battery capacity may add weight.
E-system & battery comparison
Motor Power
250 watts
▼ 190 W below average
Motor Torque
85 Nm
▲ 6.5 Nm above average
Power-to-weight
10.29 W/kg
▼ 10 W/kg below average
Battery Capacity
800 Wh
▲ 169 Wh above average
Claimed Max Range
75 miles
▲ 14 miles above average
Charge Time
6h 30m
▲ 75 mins slower than average
Sensor Type
Torque and Cadence Sensor
Removable Battery
Yes
Motor Name
Bosch Performance Line CX Generation 5
This mountain e-bike offers a balanced motor assistance that should feel natural and predictable on trails, with strong torque support helping on climbs and rough terrain. Next to similar models, it provides a smooth and controlled ride, though some e-bikes in the category may feel more punchy or lively for their weight. The torque and cadence sensor setup should help maintain responsiveness without being overly aggressive, making it suitable for technical trails and varied riding conditions. Riders looking for a well-rounded mountain e-bike with good range and predictable power delivery may find this motor setup to be a solid choice.
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 bike is well-suited for long off-road rides, thanks to its high battery capacity and strong hydraulic disc brakes, which provide confidence on rough terrain. The removable battery adds convenience for charging and storage, though the motor power is on the lower side, which may make steep climbs feel more challenging. With a range of 75 miles, it should handle extended rides comfortably, especially on moderate to technical trails.
How does the motor perform when climbing steep trails?
The motor provides smooth and controlled assistance, but its 250W power and average power-to-weight ratio mean it may struggle on very steep trails. While the above-average torque helps with climbing, riders should expect to put in more effort on extremely steep or technical ascents. This bike is better suited for moderate trails rather than aggressive climbs.
Is the battery capacity sufficient for multi-day adventures?
The 800 watt-hour battery offers a high range of 75 miles, which should support multi-day adventures if you manage your power use carefully. The removable battery design makes it easy to charge or replace when needed, adding flexibility for longer trips. However, the charging time is slower than some competitors, so planning around charging stops is important for multi-day rides.
How comfortable is the bike on rough terrain?
The CUBE Reaction Hybrid SLX 800 is designed for off-road use, and its hydraulic disc brakes provide confident stopping power on rough terrain. The bike's suspension and frame geometry should help absorb shocks and maintain stability over uneven trails. However, its motor power is on the lower side for this type of e-bike, so it may feel less responsive when navigating very technical or steep sections.
Does the bike handle well on technical trails?
The CUBE Reaction Hybrid SLX 800 handles well on technical trails, thanks to its hydraulic disc brakes that provide confident stopping power and its mountain bike design that's built for off-road use. However, with a 250W motor and average weight, it may struggle slightly with very steep or technical sections, especially if you're carrying extra weight. The high battery capacity and smooth power delivery make it a solid choice for most trail conditions, but it's best suited for moderate to challenging trails rather than the most extreme terrain.
How practical is the removable battery for everyday use?
The removable battery is quite practical for everyday use, as it allows you to charge the battery separately from the bike, which is convenient if you don’t have access to a wall socket while out on a ride. This feature also makes it easier to store or replace the battery when needed, though the charging time is longer than some competitors, so you may need to plan ahead for extended trips.
Is this bike good value for its price and features?
The CUBE Reaction Hybrid SLX 800 offers a strong balance of features for its price, especially if you prioritize off-road capability and battery convenience. It has a high-capacity battery, removable design, and confident braking, making it well-suited for extended trail rides. However, its lower motor power and slower charging time may be drawbacks for riders who need quick acceleration or frequent recharging. It's a solid choice for those focused on trail performance and battery flexibility over speed and charging efficiency.
What are the main limitations of this e-bike?
This e-bike has a few notable limitations. While it offers a high battery capacity and good range for off-road use, the motor power is on the lower side for its category, which may make acceleration and steep climbs feel less responsive. Additionally, the charging time is longer than some similar models, which could be a drawback for riders who need to recharge quickly. The bike's weight is average for a mountain e-bike, so it may feel heavier to lift or maneuver in tight trail conditions.
eBike Overview
eBike Type: Mountain Bike
The style of riding intended for this bike
Released:
2025
The bike was released 1 years ago
Screen
Unknown
Lights Included
No
Weight (inc battery): 24.3 kg
The website average for electric bikes is
23.82 kg.
This electric bike is 0.47 kg over the average. Total bike weight may vary depending on frame size.
