Torque and cadence sensing adds value by improving assist control and ride feel.
A removable battery adds practical value for charging and storage.
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 10 or more gears, which adds useful drivetrain range.
The bike appears to be a recent or current model.
The release age is recent, which supports value if pricing is competitive.
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.
86
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.
Because the bike is heavier than average, removing the battery can make handling and charging more convenient.
83
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.
The bike weight may help it feel more planted over rough surfaces.
Frame material is listed as aluminium, which gives useful comfort and build context.
82
Good 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 above average.
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 heavier than average for its type.
The calculated power-to-weight score is 24.
76
Good braking confidence
Hydraulic disc brakes should provide strong and controlled stopping power.
Overview
The Polygon COLLOSUS N8XE 2025 is a mountain bike built for off-road adventures, offering strong motor support and a smooth ride on rough terrain. Its front and rear suspension, combined with hydraulic disc brakes, provide good control and comfort on uneven surfaces, making it a solid choice for trail riding. The removable battery adds convenience for charging and storage, though the average battery capacity and range mean you'll need to plan for regular recharging on longer rides. While the bike's weight makes it a bit harder to lift, its powerful motor and torque deliver confident hill climbing performance, making it well-suited for riders who prioritize trail capability over lightweight portability.
Best For
✓
This mountain e-bike should suit riders who prioritize off-road performance, trail control and comfort on rough terrain. Its strong motor power, torque and suspension make it well-suited for trail riding and hill climbing compared to similar e-bikes. The removable battery adds flexibility for charging away from the bike, which is especially useful for riders who travel to remote trails. Riders who value responsive assistance that matches their effort and confident braking will likely appreciate its performance characteristics.
Who Should Avoid It
×
Riders who prioritize faster charging times or extended range for multi-day off-road adventures may want to compare alternatives. The bike's charging speed and battery capacity are average for mountain e-bikes, which could be a limitation for those needing longer rides or quicker battery turnaround. While the motor power is strong, it may not deliver the most responsive acceleration for technically demanding trails. However, the bike still offers solid value for money and excellent off-road capability for most trail riding scenarios.
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.
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 heavier than average for its type, which may make storage and moving it harder.
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.
15
Harder to lift
Poor
The bike is heavier than average for its type, so it may not be especially easy to lift.
The bike is heavier than average for its type, so it may not be especially easy to lift.
The listed weight is 25 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.
86
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.
Because the bike is heavier than average, removing the battery can make handling and charging more convenient.
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 98.41.
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.
34
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 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.
Range is average or better compared with similar e-bikes, which supports practical daily use.
Same powerSame range170 Wh more battery3 kg heavierSame gears
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Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
0
Limited storage practicality
The frame does not appear to fold, so storage will depend more on size and weight.
The frame does not appear to fold, so storage will depend more on size and weight.
The bike is heavier than average for its type, which may make storage and moving it harder.
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.
1
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 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 heavier than average for its type, which may make daily handling less convenient.
Front and rear suspension can add weight and complexity for normal commuting.
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
Harder to lift
The bike is heavier than average for its type, so it may not be especially easy to lift.
The bike is heavier than average for its type, so it may not be especially easy to lift.
The listed weight is 25 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.
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 98.41.
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.
33
Limited range-to-weight balance
Range is average for this type of e-bike.
Range is average for this type of e-bike.
The bike is heavier than average, which limits range-to-weight balance.
Battery efficiency appears broadly average.
The calculated range per kg is 2.48.
The calculated range per battery unit is 98.41.
E-system & battery comparison
Motor Power
600 watts
▲ 160 W above average
Motor Torque
85 Nm
▲ 6.5 Nm above average
Power-to-weight
24.00 W/kg
▲ 3.6 W/kg above average
Battery Capacity
630 Wh
▼ 0.9 Wh below average
Claimed Max Range
62 miles
▲ 1.5 miles above 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 features a strong motor output that should feel notably responsive and capable on trails, especially when climbing or navigating rough terrain. Against similar e-bikes, the motor support should compare well, with torque and cadence sensing helping to deliver a natural and predictable assistance feel. The torque should provide solid climbing support and low-speed control, making it easier to push through technical sections or steep inclines. The sensor setup should allow for smooth power delivery and adjustability, though the high motor power might mean the assistance feels more aggressive compared to some similar models. Riders looking for a lively, confident motor that can handle demanding trails should find this setup well-suited to their needs.
This explanation is based on the bike’s motor power, torque, battery capacity, claimed range, charging
time, sensor type and how those figures compare with similar e-bikes in our database.
eBike FAQs
Is this bike suitable for challenging off-road trails?
Yes, this bike is well-suited for challenging off-road trails. As a mountain e-bike, it features front and rear suspension to help absorb shocks and improve comfort on rough terrain, while hydraulic disc brakes provide reliable stopping power even in wet or muddy conditions. The motor offers strong support for climbing and navigating difficult trails, though the average battery range means you may need to plan for recharging during longer rides.
How does the motor perform when climbing steep hills?
The motor should provide strong support when climbing steep hills, thanks to its 600W power and 85Nm of torque, which are above average for similar mountain e-bikes. This combination should help maintain momentum on inclines, especially with the torque and cadence sensor detecting your pedaling effort. However, the motor's performance will also depend on your riding style and how much assistance you select, as well as the terrain's difficulty.
Does the bike offer good comfort on rough and uneven terrain?
The Polygon COLLOSUS N8XE 2025 should offer good comfort on rough and uneven terrain, thanks to its front and rear suspension system, which is designed to absorb shocks and improve stability over rough surfaces. The 29-inch wheels and wide tires also contribute to a smoother ride on uneven ground. While it's primarily built for off-road performance, the suspension and tire setup make it reasonably comfortable for mixed terrain as well.
Is the battery capacity sufficient for long off-road rides?
The battery capacity of 630 watt-hours should provide enough power for long off-road rides, as it is in line with similar mountain e-bikes. However, battery efficiency is average for this type, so you may need to plan for charging stops on extended trips. The removable battery adds convenience for charging and storage, which is helpful for multi-day adventures.
How practical is this bike for everyday use and maintenance?
This bike is practical for everyday use, especially if you're riding on trails or rough terrain. The hydraulic disc brakes provide confident stopping power, and the front and rear suspension help keep the ride comfortable over uneven ground. The battery is removable, making it easy to charge at home, though the charging time is average for this type of e-bike.
Is this bike good value for money compared to similar mountain e-bikes?
This bike offers good value for money compared to similar mountain e-bikes, especially considering its strong motor power, decent range, and quality components like the Shimano XT hydraulic disc brakes. The price is favourable for a mountain e-bike with this level of performance, though battery efficiency and capacity are average for the category, which may impact long rides without recharging.
How does the bike's weight affect its portability and handling?
The bike's weight impacts how easily it can be carried, especially when disassembling or lifting it for storage or transport. At 16.5 kg, it's a typical weight for a mountain e-bike, which is manageable but not exceptionally light. This weight also contributes to stable handling on rough terrain, though it may feel heavier compared to lighter commuter or folding e-bikes.
What are the main limitations or trade-offs of this e-bike?
This e-bike is well-suited for off-road trails, but there are a few trade-offs to consider. The bike is heavier than average for its type, which may make it harder to lift, especially when transporting or storing. While the battery capacity and range are in line with similar e-bikes, the charging time is average, so you may need to plan your rides around charging schedules. The frame does not fold, which limits storage options, so you'll need to rely on its size and weight for storage convenience.
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): 25 kg
The website average for electric bikes is
22.99 kg.
This electric bike is 2.00 kg over 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 2 / XL 3 Double Wall Alloy e-bike specific rims with a wide 35 mm internal diameter laced to Shimano TC 500 hub sets
Wheelset Size
29 inch
Tires
SCHWALBE MAGIC MARY EVO 29"x2.60" 622x65 SUPER GRAVITY TLE ADDIX SOFT
Frame Info
Frame Material
Aluminium
Suspension Type
Front and Rear suspension
Foldable Frame
No
Max Payload
136 kg (299.8 lbs)
Drivechain Details
Groupset details
XT Di2
Drivechain type
Chain drive
Shifters
Shimano XT Di 2 SW-M 8150 electronic switch shifter
Amount of gears
12 Gears
Rear Derailleur
Shimano XT Di 2 RD-M 8150
Front Derailleur
None
Cassette
Shimano XT CS-M 8100, 10-51 T
Cranks
Shimano XT M 8150 e-bike crank arms (160 mm length) paired with a 34 T Shimano SM-CRE 80-12-B chainring
Chain
KMC e 12 Turbo
Bottom Bracket
Integrated Shimano internal bottom bracket axle unit
Brakes
Brakes
Shimano XT Hydraulic Disc
Brake Type: Hydraulic Disc Brake
Hydraulic operated discs brakes (Very good)
Brake Rotors
203 mm RT-MT 800/RT-EM 810 center-lock rotors
Shifters
Shimano XT Di 2 SW-M 8150 electronic switch shifter
