When it comes to choosing an electric mountain bike that balances power, performance, and practicality, Polygon offers some serious contenders.
Two standout options are the Siskiu TE Bosch and the Siskiu HE. Although they may look similar at a glance, they serve very different riders.
Let’s break down what each bike is designed for, how they compare in specs and performance, and which one might suit your terrain and lifestyle best.
Quick Spec Comparison: Siskiu TE Bosch vs Siskiu HE Bosch
Power System: Bosch Motors That Deliver
Both electric bikes are powered by Bosch Performance Line CX motors, known for their natural pedal assist and high torque output: up to 85Nm.
However, the TE gets the edge with 600W peak output, making it better suited for aggressive climbing and technical ascents. It responds quickly and delivers consistent power even on steep terrain.
The HE shares the same motor core, but it’s tuned for broader usability, blending performance with smooth and controlled delivery. It’s ideal for urban terrain, light trails, and weekend adventures where extreme torque isn’t always necessary.
Both models house a Bosch PowerTube 625 Wh battery, seamlessly integrated into the frame and removable for convenient charging. Expect a solid range between 40–80+ miles, depending on terrain, assist level, and rider weight.
Suspension Performance & Ride Handling
Suspension separates these two electric bikes more than any other component. The Siskiu TE is outfitted with:
- RockShox Lyrik Select Fork (150mm travel)
- RockShox Super Deluxe Select+ Rear Shock (140mm travel)
This long-travel setup gives the TE plush control on rocky descents, big roots, and aggressive berms. Its flip-chip geometry also allows switching between a mullet or full-29” wheel setup while maintaining a consistent BB height and handling feel.
The Siskiu HE, by contrast, features:
- SR Suntour Mobie 36 Boost Fork (130mm)
- SR Suntour Edge Plus 2CR Rear Shock (120mm)
This combination makes it capable of mixed terrain, just like gravel, dirt paths, and uneven pavement, but it’s not built for drops or enduro-level terrain. Its more upright geometry enhances visibility and comfort, particularly useful for commuting or touring.
Drivetrain Comparison
Both bikes run SRAM Eagle drivetrains, but with different component levels:
- TE: SRAM SX 1×12-speed shifter + GX Eagle derailleur, with a 34T crank and 11–50T cassette. It’s designed for precise shifting under load and rugged durability on trails.
- HE: SRAM SX shifter + NX Eagle derailleur, paired with a slightly larger 38T chainring. This setup offers wide-range gearing while maintaining simplicity and ease of maintenance, especially for daily riders.
While both are capable 1×12 drivetrains, the TE’s GX componentry is more performance-focused, especially for high-load shifting.
Tires & Surface Performance
The TE runs Schwalbe Hans Dampf Evo tires, 29”x2.6” front and 27.5”x2.6” rear. These are aggressive, grippy, and trail-optimized, giving riders confidence on wet roots, loose dirt, and rocky trails.
The HE comes with Schwalbe Hurricane Performance tires, 29”x2.4” front and 27.5”x2.4” rear. These tires balance rolling efficiency with off-road traction, making them perfect for riders transitioning between tarmac and trail.
In short, TE offers trail traction and stability; on the other hand, HE offers a versatile and efficient hybrid grip.
Who Should Ride the Siskiu TE vs Siskiu HE?
Siskiu TE Bosch – Built for the Trail Devotee
The Siskiu TE Bosch is designed for riders who live and breathe technical trails. Whether it’s long climbs, rock gardens, berms, or steep descents, this electric bike thrives in the most demanding terrain.
It comes with premium full-suspension components, progressive trail geometry, and the power of Bosch’s Performance Line CX motor, making it a top-tier choice for experienced mountain bikers who want to push their limits.
Riders who frequent bike parks or enjoy fast-paced enduro sessions will appreciate the responsiveness and agility of the TE. If control, climbing traction, and descending confidence are non-negotiables for you, the TE is the electric mountain bike to trust.
Siskiu HE Bosch – A Commuter’s Dream with a Wild Side
On the other hand, the Siskiu HE Bosch redefines what a daily e-bike can do. With its upright, comfort-oriented geometry and SUV-style tires, the HE blends the reliability of an urban commuter with the guts of an off-road adventurer.
It’s perfect for those who ride to work on weekdays and seek gravel paths or forest trails on weekends.
The Bosch Performance Line motor delivers smooth, consistent power that supports both casual city cruising and light trail exploration. If you’re after an electric SUV bike that can comfortably take you from street to singletrack, the HE is an exceptional all-rounder.
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Final Thoughts
When it comes to Siskiu TE vs Siskiu HE, both offer the trusted performance of Bosch motors, robust Polygon frame engineering, and e-MTB-ready componentry. Your choice depends on how and where you ride:
- Go with the TE for full-suspension, high-performance trail domination.
- Choose the HE for a more balanced, all-surface ride that bridges urban and off-road seamlessly.
No matter which you pick, both electric bikes prove that Polygon is serious about electric mountain bikes and serious about helping riders of all levels electrify their adventures.
