Can’t decide between the Polygon Collosus NE and Siskiu TE Series? You’re not alone; both are standout electric mountain bikes (E-MTBs) built for big adventures.
The Collosus NE is a powerhouse for enduro riders tackling steep, technical descents. Meanwhile, the Siskiu TE offers nimble handling for long, mixed-terrain trail days. So, which one fits your style?
Let’s break down their key features, from geometry and suspension to motor systems, to help you choose.
Quick Overview: What Makes the Collosus NE and Siskiu TE Different?
At a glance, both the Polygon Collosus NE and the Siskiu TE look like capable electric mountain bikes, and they are. However, under the surface, these two machines are designed for very different purposes.
The Collosus NE is Polygon’s flagship enduro E-MTB. It’s built for serious terrain: steep descents, technical rock gardens, bike parks, and fast, aggressive riding.
Everything about it, from the long-travel suspension to the slackened-out geometry, is made to keep you stable and in control when trails get rowdy.
The Siskiu TE, on the other hand, is designed for trail riders who want a balance of climbing ability and downhill fun. It’s more agile, lighter, and more responsive.
That makes it perfect for all-day rides across mixed terrain, from flowy singletrack to punchy climbs and moderate descents. It still has solid travel, just not as much as the Collosus NE.
So while both bikes are powerful E-MTBs, they’re tuned for very different personalities on the trail. The Collosus NE leans more toward gravity-fed speed and confidence at high speeds, while the Siskiu TE is your versatile, go-anywhere trail buddy.
Geometry & Handling: Built for Different Feels on the Trail
When it comes to how a bike rides, geometry plays a massive role. It affects your control, comfort, and confidence on different terrains. While both bikes share a modern E-MTB silhouette, the Collosus NE and Siskiu TE are tuned for different experiences.
The Polygon Collosus NE has a slacker head angle, longer reach, and lower bottom bracket, all signs of a bike made for going fast downhill while keeping you planted and in control.
In contrast, the Polygon Siskiu TE leans more toward nimbleness. It’s slightly steeper and more compact, helping you pop over features and stay playful on the trail.
Here’s how their geometry compares (based on size M):
| Geometry Metric | Collosus NE (M) | Siskiu TE (M) |
| Head Angle | 64.5° | 65° |
| Seat Tube Angle | 78° | 71.7° |
| Reach | 470 mm | 465 mm |
| Stack | 631 mm | 618 mm |
| Chainstay Length | 435 mm | 445 mm |
| Wheelbase | 1235 mm | 1226 mm |
| BB Drop | 25 mm | 30 mm |
So what does this mean on the trail? Collosus NE feels ultra-stable on steep, chunky lines. It wants to charge. Siskiu TE feels more agile and poppy, perfect for tight switchbacks or undulating terrain. Neither is “better”; it all comes down to your ride style.
Suspension & Trail Performance: Travel That Matches the Terrain
When choosing an electric mountain bike, suspension isn’t just about comfort; it’s about control, capability, and confidence. Both the Collosus NE and the Siskiu TE come with high-quality suspension setups, but they’re tuned for very different trail personalities.
Polygon Collosus NE: Big Travel, Big Hits
The Collosus NE is a true enduro beast. It runs 170mm of travel up front and 160mm in the rear, giving it the cushion to soak up chunky terrain, hard hits, and technical descents.
It uses a FOX 38 Performance fork paired with a FOX Float X Performance rear shock, which are both known for their stiffness, adjustability, and reliability in high-impact environments.
That longer travel makes a huge difference when you’re riding steep, fast trails. The suspension keeps the bike composed when smashing through rock gardens, landing drops, or riding loose, off-camber corners.
For aggressive riders who push hard on downhills, the Collosus NE keeps things smooth and in control.
Polygon Siskiu TE: Balanced, All-Mountain Feel
The Siskiu TE leans toward the trail side of things, with 150mm of front travel and 140mm in the rear.
It features a FOX 36 Rhythm fork and FOX Float DPS Performance rear shock — solid choices for trail riders who want support without the extra bulk or sluggishness of longer-travel setups.
This configuration makes the TE feel lighter on its feet. It still handles rough trails and technical features well, but it’s much more efficient on climbs and easier to flick around in tight terrain.
If your idea of a good ride includes a lot of elevation gain, switchbacks, and flowy descents, the Siskiu TE hits the sweet spot.
Suspension travel isn’t just about numbers; it’s about how the bike handles when the trail gets rowdy or when you want to keep things efficient. The NE is built to take hits at speed, while the TE is built for versatility and long-mile comfort.
Motor, Battery & Range: Torque Twins, Different Feels
Both the Polygon Collosus NE and Siskiu TE pack serious power, each with motors that push 85 Nm of torque, but the feel and range are slightly different due to the systems they use.
Collosus NE: Bosch Brute with Big Range
The Collosus NE runs the Bosch Performance Line CX motor paired with a 750Wh PowerTube battery. It’s built for high-output riding, giving strong support on steep climbs and long enduro loops. The Bosch system is punchy, and the large battery lets you ride harder, longer.
Siskiu TE: Shimano Smooth and Efficient
The Siskiu TE uses the Shimano EP801 motor and a 630Wh battery. While it delivers the same torque as the Bosch unit, the Shimano system feels more natural and trail-adaptive. It’s a bit lighter overall, which adds to the TE’s agile, nimble vibe.
So Which System Wins?
- Bosch (Collosus NE): More battery = more range, especially on full-power modes. Great for long enduro days.
- Shimano (Siskiu TE): Lighter setup, more natural trail feel. Better for those who like a more intuitive ride experience.
Both bikes push 85 Nm of torque, so raw power isn’t the difference; it’s how that power feels, and how far it’ll take you.
Groupset & Terrain-Ready Features: Shifting, Braking, and Trail Toughness
Both the Polygon Collosus NE and Siskiu TE are kitted out with high-performance components, but they’re built for slightly different trail expectations. Let’s break it down.
Collosus NE: Gravity-Proven Components
The Collosus NE uses the Shimano XT 12-speed drivetrain, known for crisp shifting even under heavy load. Paired with a 10–51T cassette, it gives you a wide range for both steep climbs and fast descents.
It also comes with Shimano XT 4-piston hydraulic brakes, giving you serious stopping power for big-mountain terrain. Everything about the NE’s spec screams durability. This bike is ready for enduro abuse straight out of the box.
Siskiu TE: Reliable Trail Performer
The Siskiu TE also features a Shimano XT 12-speed groupset with a wide-range 10–51T cassette, offering efficient and reliable shifting.
It uses Shimano MT420 4-piston brakes, slightly less premium than XT but still very capable for trail duty. The Fox 36 Rhythm fork, Float DPS shock, and alloy wheels with 2.6″ tires help keep the TE light and playful, yet confident on rough terrain.
Both bikes are E-MTB ready, but the NE leans heavier on gravity tech, while the TE balances performance with all-day rideability.
Who Should Ride the Collosus NE vs Siskiu TE?
Choosing between the Polygon Collosus NE and the Siskiu TE comes down to how you like to ride, where you ride, and what kind of rider you are.
Ride the Collosus NE if:
- You live for steep, technical descents, enduro lines, or bike park days.
- You want a bike that stays planted and confident at high speed.
- You regularly ride terrain where long-travel suspension and powerful brakes are a must.
- You’re okay with a slightly heavier setup in exchange for max stability and range.
This is the bike for riders who push their limits, enduro junkies, gravity riders, and weekend warriors who want a full-send setup.
Ride the Siskiu TE if:
- You ride mixed trails, from flowy singletrack to moderate climbs and descents.
- You prefer something lighter and more agile for everyday fun.
- You still want power and range, just in a more versatile and efficient package.
- You love big days in the saddle but don’t need to crush gnarly enduro lines.
This one’s for the all-rounder, riders who explore different types of trails and want a reliable electric mountain bike that can keep things fun without overkill.
Read also:
- Mountain Bike Frame Guide: Types, Materials, and Tips for Choosing the Right One
- The Joy of Mountain Biking: 5 Benefits
Final Verdict: Which E-MTB Is Right for You?
Both the Polygon Collosus NE and the Siskiu TE are premium electric mountain bikes, but they serve two different styles of riders.
If you’re looking for a long-travel E-MTB that thrives on rough terrain, the Collosus NE is built for it, with aggressive suspension, a bigger battery, and gravity-ready components that can take a beating. It’s your go-to rig for enduro laps, alpine trails, and full-send sessions.
On the flip side, the Siskiu TE is a more agile, all-around E-MTB. It’s perfect for trail riders who want a little bit of everything: smooth climbs, fun descents, and long rides that don’t leave you drained. It’s lighter, more efficient, and feels right at home on a variety of terrains.
Whichever you pick, you’re getting a seriously capable E-MTB that’s been engineered to ride hard, last long, and make every trail a good time.
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