Highlights based on this e-bike’s specs, comparisons and practical strengths.
99
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 27.5-inch wheel size is a strong option for off-road control and manoeuvrability.
98
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 tyre description suggests useful grip for trail surfaces.
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.
Power-to-weight is strong, which should help when controlling the bike over uneven trail sections.
93
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.
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.
92
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 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 calculated power-to-weight score is 24.49.
91
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 sensing should improve control by responding to rider effort.
With stronger motor output, clear controls and ride modes become more useful.
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
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.
The longer charging time makes it more useful to charge the battery separately from the bike.
76
Good braking confidence
Hydraulic disc brakes should provide strong and controlled stopping power.
74
Good power-to-weight ratio
Power-to-weight is above average for this type of e-bike.
Power-to-weight is above average for this type of e-bike.
Motor power is high for this type of e-bike.
The calculated power-to-weight score is 24.49.
Overview
The Polygon SISKIU TE WITH BOSCH 2024 is a mountain bike built for off-road trails and rough terrain, offering strong motor support with 600W power and 85Nm of torque to help tackle hills with confidence. Its front and rear suspension, combined with hydraulic disc brakes, ensures a comfortable and controlled ride over uneven surfaces. The removable battery adds convenience for charging and storage, though the bike's charging time is notably slow, and its range may limit longer rides. While it feels lively for its weight, the power delivery can feel a bit inconsistent in real-world use, making it better suited for shorter, more technical trails than long-distance adventures.
Best For
✓
This mountain e-bike should suit riders who prioritize off-road performance, trail control and hill climbing support. Its strong torque and hydraulic disc brakes make it well-suited for challenging terrain, while the front and rear suspension should improve comfort on rough surfaces. The removable battery adds flexibility for charging away from the bike, which is useful for riders who need to manage power on the go.
Who Should Avoid It
×
Riders planning long off-road rides may want to compare alternatives, as the range is lower than average for similar mountain e-bikes, which could limit extended trail use. The charging time is also longer than average for this type of e-bike, which may be a drawback for riders who need to recharge quickly. However, the bike still offers strong hill climbing support and excellent off-road capability, making it a solid choice for shorter or more technical trail rides.
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 removable battery can make storage and indoor charging more flexible.
A full-suspension mountain bike format is usually bulkier and harder to store indoors.
30
Some lifting limitations
Weak
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 24.5 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.
83
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.
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 longer than average for this type of e-bike.
Charging time is longer than 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 64.
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.
100W more power12 miles more range3 Ah less battery1 kg lighterSame gears
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 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.
Front and rear suspension can add weight and complexity for normal commuting.
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 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 longer than average for this type of e-bike.
Charging time is longer than average for this type of e-bike.
The quoted charging time is long in absolute terms.
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.
28
Limited longer-ride suitability
Range is low compared with similar e-bikes, which may limit longer rides.
Range is low compared with similar e-bikes, which may limit longer rides.
Battery capacity is average for this type of e-bike.
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.
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 64.
29
Poor range-to-weight balance
The bike weight is average for this type of e-bike.
The bike weight is average for this type of e-bike.
Battery efficiency appears broadly average.
The calculated range per kg is 1.63.
The calculated range per battery unit is 64.
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.
E-system & battery comparison
Motor Power
600 watts
▲ 160 W above average
Motor Torque
85 Nm
▲ 6.5 Nm above average
Power-to-weight
24.49 W/kg
▲ 4.1 W/kg above average
Battery Capacity
625 Wh
▼ 5.9 Wh below average
Claimed Max Range
40 miles
▼ 21 miles below average
Charge Time
5h 40m
▲ 25 mins slower than average
Sensor Type
Torque Sensor
Removable Battery
Yes
Motor Name
Bosch Performance Line CX (Smart System mid-drive motor)
This mountain e-bike features a strong motor output that should feel lively and responsive on trails, with good support for climbing and low-speed technical riding. Against similar e-bikes, the motor's power and torque should provide a noticeable edge in terms of assistance and control, especially when navigating rough terrain or steep inclines. The torque sensor should make the assistance feel more natural and proportional to rider effort, helping maintain traction and stability on uneven surfaces. The power-to-weight balance should contribute to a more dynamic riding experience, though the range may be more limited than some similar models, which could affect longer rides. Riders looking for a capable motor that delivers strong support on trails and climbs without sacrificing control 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 long off-road rides?
This bike is well-suited for off-road trails and rough terrain, thanks to its mountain bike design, front and rear suspension, and hydraulic disc brakes, which provide good control and confidence on uneven surfaces. However, its range of 40 miles may limit longer rides, and the charging time is slower than average, which could be a consideration for extended off-road adventures.
How does the motor perform when climbing steep trails?
The motor should handle steep trails effectively, thanks to its 600W power and 85Nm of torque, which are above average for similar mountain e-bikes. This combination provides strong hill-climbing support, making it suitable for challenging terrain. However, the battery efficiency is average, so you may need to plan for more frequent charging on long or steep rides.
Does the bike handle rough terrain comfortably?
This mountain e-bike is designed for rough terrain, with front and rear suspension that should significantly improve comfort on uneven surfaces. The hydraulic disc brakes and sturdy tire setup also contribute to stable handling on trails. While it's not optimized for daily commuting, it should feel confident and controlled on rough roads and off-road paths.
How practical is the battery for everyday use and charging?
The battery is removable, which makes charging and storage more convenient for everyday use. However, the charging time is longer than average for similar e-bikes, so you may need to plan ahead for longer rides. The range is also below average, which could limit how far you can go on a single charge, especially on rough terrain.
Is this bike good value for the price compared to similar e-bikes?
This bike offers good value for the price compared to similar e-bikes, especially considering its strong motor power and torque, which are above average for mountain e-bikes. The price is favourable, and the removable battery adds practicality for charging and storage. However, the range is slightly lower than average, which may be a consideration for longer rides.
What are the main limitations of this bike for serious off-road use?
This bike is designed for mountain biking and should handle most off-road trails well, but it may struggle with extremely technical or rugged terrain. The range of 40 miles is decent for off-road use, but frequent charging may be needed for longer rides. While the hydraulic disc brakes and suspension provide good control and comfort, the bike's weight and tire size may limit its agility on very rough or rocky trails.
How does the braking system perform on steep or muddy trails?
The hydraulic disc brakes, specifically the Magura MT 7 Pro, should provide confident stopping power on steep or muddy trails. This type of brake is well-suited for off-road conditions, offering reliable performance in wet or loose terrain. The front and rear suspension also helps maintain control, allowing the brakes to work more effectively by keeping the tires in better contact with the ground.
Is the weight of the bike manageable for carrying or lifting when needed?
The bike weighs 24.5 kg, which is average for a mountain e-bike and may require some effort to lift, especially if you need to carry it frequently. However, the removable battery adds flexibility for charging and storage. If you're used to handling heavier bikes on trails, this weight should be manageable, though it's not the lightest option for easy lifting.
eBike Overview
eBike Type: Mountain Bike
The style of riding intended for this bike
Released:
2024
The bike was released 2 years ago
Screen
Bosch Top Tube Integrated System Controller
Lights Included
No
Weight (inc battery): 24.5 kg
The website average for electric bikes is
22.88 kg.
This electric bike is 1.61 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
