Highlights based on this e-bike’s specs, comparisons and practical strengths.
100
Excellent hill climbing support
Torque is above average for this type of e-bike.
Torque is above average for this type of e-bike.
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 32.26.
100
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 29-inch or mullet wheel setup should help stability and control on descents.
The mountain bike design should be better suited to controlled descending.
100
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 and rear suspension should improve control and comfort off-road.
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.
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 32.26.
95
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 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.
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.
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.
89
Excellent motor punch
Motor power is high compared with similar e-bikes.
Motor power is high compared with similar e-bikes.
Torque is above average for this type of e-bike.
Power-to-weight is high compared with similar e-bikes.
Torque-sensing assistance should make the motor response feel more natural.
The bike is lighter than many similar e-bikes, which should help responsiveness.
The calculated power-to-weight score is 32.26.
89
Excellent trail control
The mountain bike format should feel well suited to trail riding.
The mountain bike format should feel well suited to trail riding.
Front and rear suspension should improve control on uneven trails.
Hydraulic disc brakes should improve control on loose or uneven trails.
The 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.
Power-to-weight is strong, which should help when controlling the bike over uneven trail sections.
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 braking confidence
Hydraulic disc brakes should provide strong and controlled stopping power.
Overview
The Polygon COLLOSUS N8E 2025 is a mountain bike designed for trail riding and off-road adventures, offering strong motor support and a responsive feel on rough terrain. With a powerful 600W motor and 85Nm of torque, it delivers confident hill climbing and quick acceleration, making it well-suited for challenging trails. The front and rear suspension, combined with hydraulic disc brakes, ensures stable control and reliable stopping power, even on uneven surfaces. However, its battery efficiency is average, providing a range of around 40km, which may require more frequent charging on longer rides. The removable battery adds convenience for charging and storage, though the overall price point may be a consideration for some buyers.
Best For
✓
This mountain e-bike should suit trail riders who prioritize confident hill climbing, responsive assistance and control on rough terrain. Its high torque and power-to-weight ratio make it effective for climbing and handling challenging trails, while the front and rear suspension, along with hydraulic disc brakes, support stability and braking confidence. The removable battery adds flexibility for charging away from the bike, which is useful for longer rides or multi-day trips. Riders who value a balance between performance and practicality on off-road trails are likely to appreciate its capabilities.
Who Should Avoid It
×
Riders who prioritise extended range for long off-road rides may want to compare alternatives, as the range is lower than some similar mountain e-bikes. The battery capacity is also average for this category, which could be a consideration for those planning frequent or lengthy trips. However, the bike still offers strong hill climbing support and a powerful motor, making it a solid choice for riders focused on performance and off-road capability.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
30
Some maintenance considerations
Weak
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Hydraulic disc brakes are a strong everyday setup, though they may need occasional specialist servicing.
A removable battery makes charging, storage and battery care easier.
Tyres are listed, but there is no clear puncture-protection signal.
The aluminium frame material is practical for everyday use and general maintenance.
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.
62
Mixed liftability
Mixed
The bike is very light compared with similar e-bikes, which should make it easier to lift and move.
The bike is very light compared with similar e-bikes, which should make it easier to lift and move.
The listed weight is 18.6 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.
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.
23
Very slow charging speed
Poor
Charging time is average for this type of e-bike.
Charging time is average for this type of e-bike.
The quoted charging time is long in absolute terms.
29
Low battery efficiency
Poor
Battery efficiency appears average for this type of e-bike.
Battery efficiency appears average for this type of e-bike.
The calculated range per battery unit is 63.49.
62
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.
40
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.
A very light e-bike may feel less planted in poor weather 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.
15
Limited family utility practicality
Poor
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
A removable battery makes charging easier around family or utility use.
350W less powerSame rangeSame battery5 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 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 low compared with similar e-bikes, which may limit commuting flexibility.
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.
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.
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.
15
Limited family utility practicality
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
A removable battery makes charging easier around family or utility use.
23
Very slow charging speed
Charging time is average for this type of e-bike.
Charging time is average for this type of e-bike.
The quoted charging time is long in absolute terms.
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 63.49.
30
Some maintenance considerations
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Hydraulic disc brakes are a strong everyday setup, though they may need occasional specialist servicing.
A removable battery makes charging, storage and battery care easier.
Tyres are listed, but there is no clear puncture-protection signal.
The aluminium frame material is practical for everyday use and general maintenance.
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.
30
Some payload limitations
The mountain bike format can handle some extra load, though it is not primarily cargo-focused.
The mountain bike format can handle some extra load, though it is not primarily cargo-focused.
Hydraulic disc brakes are useful when slowing a heavier load.
Torque is strong compared with similar e-bikes, which should help when starting or climbing with extra load.
Motor power is strong compared with similar e-bikes, which can help when carrying extra weight.
Frame material is listed as aluminium, which gives useful load-carrying context.
E-system & battery comparison
Motor Power
600 watts
▲ 160 W above average
Motor Torque
85 Nm
▲ 6.5 Nm above average
Power-to-weight
32.26 W/kg
▲ 12 W/kg above average
Battery Capacity
630 Wh
▼ 0.9 Wh below average
Claimed Max Range
40 miles
▼ 21 miles below average
Charge Time
5h
▼ 15 mins faster than average
Sensor Type
Torque and Cadence Sensor
Removable Battery
Yes
Motor Name
Shimano STEPS DU-EP 801
This mountain e-bike offers a strong and responsive motor setup that should feel lively and capable on trails, with good support for climbing and low-speed technical riding. Against similar e-bikes, its motor power and torque should provide a noticeable edge in terms of punch and traction on rough terrain. The torque and cadence sensor should help maintain a natural feel, offering predictable assistance that adapts to rider input, while the bike's low weight should contribute to a more agile and balanced ride. Riders looking for a mountain e-bike that feels powerful yet controlled, with good support for climbs and technical trails, should find this motor 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 off-road trails, with a powerful motor and strong torque that help with climbing and acceleration on rough terrain. However, its battery efficiency is average, offering a range of around 40 miles, which may require more frequent charging on longer rides. The removable battery adds convenience for charging and storage, but if you're planning extended off-road trips, you may need to plan for additional charging solutions.
How does the motor perform when climbing steep trails?
The motor should handle steep trails effectively, thanks to its above-average torque and power-to-weight ratio for mountain e-bikes. This means you'll get strong support when climbing, especially with the torque and cadence sensor helping to adjust assistance as needed. While the motor is well-suited for hills, keep in mind that battery efficiency is average for this type of bike, so you may need to plan for more frequent charging on extended climbs.
Does the bike offer good control and stability on rough terrain?
The Polygon COLLOSUS N8E 2025 is designed for off-road use, and its hydraulic disc brakes should provide confident stopping power on rough terrain. With front and rear suspension, it should handle uneven surfaces and trails well, improving both control and comfort. The 29-inch wheels and wide tires also contribute to stability, making it a solid choice for mountain biking on challenging trails.
How practical is this bike for everyday use and charging?
This bike is reasonably practical for everyday use, especially if you're riding on trails or rough terrain. The removable battery makes charging more convenient, as you can take it indoors to charge without leaving the bike outside. However, the battery capacity and range are average for mountain e-bikes, so you may need to plan charging stops for longer rides. The 5-hour charge time is typical for this type of bike, which should be manageable for most users.
Is the battery efficient enough for regular off-road riding?
The battery efficiency is average for similar mountain e-bikes, which means you can expect a range of around 40 miles on a single charge. This should be sufficient for most off-road rides, but if you plan to ride for extended periods or cover longer distances, you may need to plan for additional charging stops. The removable battery adds convenience for charging and storage, making it more practical for regular off-road use.
Who is this bike best suited for?
This bike is best suited for experienced off-road riders who prioritize hill climbing and trail control over long-distance range. The powerful motor and strong torque make it ideal for challenging trails, while the hydraulic disc brakes and suspension provide confidence on rough terrain. However, the average battery capacity and below-average range may require more frequent charging for extended rides.
What are the main compromises of this bike?
The main compromises of this bike include limited storage practicality due to its non-folding frame, which means storage will depend more on size and weight. It also has a standard charging time for a mountain e-bike, which may not be as fast as some riders would prefer. Additionally, the chain drive system, while reliable, requires more maintenance and cleaning compared to alternatives like belt drives.
Is this bike good value compared with similar e-bikes?
This bike offers good value for a mountain e-bike, especially considering its strong motor power, high power-to-weight ratio, and solid off-road capabilities. The price is favourable compared to similar models, though the range is slightly lower than average, which may affect longer rides. The chain drive system is practical but requires more maintenance than alternatives, so consider this if you're looking for a balance between performance and cost.
eBike Overview
eBike Type: Mountain Bike
The style of riding intended for this bike
Released:
2025
The bike was released 1 years ago
Screen
Shimano STEPS SC-E600 Display
Lights Included
No
Weight (inc battery): 18.6 kg
The website average for electric bikes is
22.99 kg.
This electric bike is 4.4 kg under the average. Total bike weight may vary depending on frame size.
Sizing & Geometry
Min / Max Rider Height
SM: 157–168 cm, MD: 168–178 cm, LG: 178–185 cm, XL: 185–193 cm
Folded Dimensions
Unknown
Wheel & Tire Details
Wheelset Name
Entity XL 3 double-wall alloy rims (35 mm internal width, 32-hole, tubeless-ready) laced to Shimano TC 500 Boost hubs
Wheelset Size
29 inch
Tires
SCHWALBE MAGIC MARY EVO 29"x2.60" 622x65 SUPER GRAVITY TLE ADDIX SOFT
