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.
90
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.
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.
87
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 27.5-inch wheel size should help balance control and manoeuvrability.
Torque is above average for this type of e-bike.
Torque-sensing assistance should help with smoother control on technical sections.
The bike is heavier than average for its type, which may affect technical handling.
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.
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.
83
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 and rear suspension should improve control on uneven trails.
Hydraulic disc brakes should improve control on loose or uneven trails.
The 27.5-inch wheel size should balance manoeuvrability and trail control.
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.
76
Good braking confidence
Hydraulic disc brakes should provide strong and controlled stopping power.
Overview
The Polygon SISKIU HE (SHIMANO) 2024 is a mountain bike designed for trail riding and off-road adventures, offering a smooth and controlled power delivery that makes it easy to navigate rough terrain. Its front and rear suspension provides good comfort on uneven surfaces, while the removable battery adds convenience for charging and storage. However, the bike's lower motor power and battery capacity may limit performance on steep hills or for longer rides, and the charging time is notably slow compared to similar models.
Best For
✓
This mountain e-bike should suit riders who enjoy trail riding and want a balance of comfort, control and practicality on rougher terrain. Its front and rear suspension, along with hydraulic disc brakes, provide confidence on uneven surfaces, making it a solid choice for trail-focused riders. The removable battery and smooth power delivery also make it convenient for those who need flexibility in charging and a natural riding experience. Riders who prioritize off-road capability and value a well-rounded mountain e-bike for regular trail use are likely to appreciate its features.
Who Should Avoid It
×
Riders seeking maximum range or a larger battery may want to compare alternatives, as this bike's range and battery capacity are below average for similar mountain e-bikes. Riders wanting quicker charging or more aggressive motor punch could find stronger options next to rivals in the same category. However, the bike still suits those prioritising smooth power delivery, confident braking, and good off-road capability for typical trail use.
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.
21
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 24.6 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.
90
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.
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 89.29.
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.
42
Some family utility limitations
Weak
Payload capacity is above average for this type of e-bike.
Payload capacity is above average for this type of e-bike.
The listed maximum payload should be useful for family or utility riding.
The listed maximum payload is 150 kg.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
A removable battery makes charging easier around family or utility use.
Same power5 miles less range4 Wh less battery1 kg lighter1 more gears
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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 bike is heavier than average for its type.
The calculated power-to-weight score is 10.16.
0
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 bike is heavier than average for its type.
The calculated power-to-weight score is 10.16.
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 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 strong compared with similar e-bikes, which helps with bags, shopping or extra kit.
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.
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 bike is heavier than average for its type.
The calculated power-to-weight score is 10.16.
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.
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
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.
12
Low battery capacity
Battery capacity is low compared with similar e-bikes.
Battery capacity is low compared with similar e-bikes.
The listed battery capacity should be practical for regular riding.
E-system & battery comparison
Motor Power
250 watts
▼ 190 W below average
Motor Torque
85 Nm
▲ 6.5 Nm above average
Power-to-weight
10.16 W/kg
▼ 10 W/kg below average
Battery Capacity
504 Wh
▼ 127 Wh below average
Claimed Max Range
45 miles
▼ 16 miles below average
Charge Time
10h
▲ 285 mins slower than average
Sensor Type
Torque and Cadence Sensor
Removable Battery
Yes
Motor Name
Shimano Steps DU-EP 600
This mountain e-bike offers legal-style pedal assist with strong torque support that should feel capable on trails and climbs. Next to similar models, it may feel a bit more modest in outright punch and liveliness for its weight, but the torque and cadence sensor should help balance natural response with predictable assistance. The motor should provide solid support on climbs and low-speed rough terrain, though some similar e-bikes may feel more dynamic under effort. The sensor setup should help riders maintain control and responsiveness, especially on technical trails. Riders looking for a trail-focused e-bike with reliable torque and a balanced feel may 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 challenging off-road trails?
This mountain bike is well-suited for off-road trails, thanks to its front and rear suspension that improves comfort on rough terrain. However, its lower motor power and battery capacity may limit performance on very steep or technical trails, especially for longer rides. The bike offers good trail control and smooth power delivery, making it a solid choice for most off-road adventures.
How does the motor perform when climbing steep hills?
The motor should provide smooth support when climbing steep hills, but its performance may be limited due to the bike's lower motor power and power-to-weight ratio compared to similar e-bikes. The torque is above average for this type of e-bike, which should help with hill climbing, but the overall motor punch may feel less responsive on very steep inclines. Riders should expect controlled assistance rather than powerful acceleration when tackling steep terrain.
Does the bike offer enough range for longer rides?
The bike offers a range of 45 miles on a single charge, which should be sufficient for most day-long rides, especially on trails and rough terrain. However, this range is below average for similar mountain e-bikes, so longer rides may require more frequent charging. The removable battery adds convenience for charging on the go, but the relatively slow charging time of 10 hours could be a consideration for extended trips.
How comfortable is the bike on rough or uneven terrain?
The bike should be quite comfortable on rough or uneven terrain, thanks to its front and rear suspension, which should help absorb shocks and improve stability. The 27.5-inch wheels and wide tires are also well-suited for handling rough surfaces, making it a solid choice for trail riding. However, it's designed more for off-road use, so if you're primarily riding on rough terrain, this bike should meet your needs well.
Is the battery easy to remove and charge?
Yes, the battery is removable, which makes it easy to charge separately from the bike. This is a practical feature for mountain e-bike owners who may need to recharge the battery in different locations. However, the charging time is above average for similar e-bikes, so you may need to plan for longer charging sessions.
How does the weight of the bike affect its handling and portability?
The bike's weight impacts how it feels when riding and carrying. A heavier bike may feel less agile on technical trails but offers more stability at higher speeds. At 10.16 power-to-weight, it's below average for similar e-bikes, which may affect acceleration and climbing performance. However, the front and rear suspension help absorb shocks, making it more comfortable on rough terrain despite the weight.
Is this bike good value for money compared to similar e-bikes?
This bike offers good value for money compared to similar e-bikes, especially considering its price is favourable within the mountain e-bike category. While it has a lower battery capacity and range than some competitors, the price point and practical features like the removable battery make it a strong option for off-road use. It may not be ideal for very long rides, but for most trail riding, it should meet expectations without breaking the bank.
What are the main limitations or trade-offs of this bike?
This bike has a lower motor power and torque compared to similar mountain e-bikes, which may affect acceleration and performance on steep inclines. The power-to-weight ratio is also below average, which could impact how the bike feels when climbing or handling technical trails. However, it offers a good balance of weight and suspension for off-road comfort, and the removable battery adds practicality for charging and storage.
eBike Overview
eBike Type: Mountain Bike
The style of riding intended for this bike
Released:
2024
The bike was released 2 years ago
Screen
Cadence Sensor
Lights Included
No
Weight (inc battery): 24.6 kg
The website average for electric bikes is
22.99 kg.
This electric bike is 1.60 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/Polygon Aluminium double-wall rims built on Shimano Center Lock disc hubs
