Polygon Siskiu D7 and the Polygon Siskiu T7 are both full suspension trail bikes that feature aluminum frames, RockShox suspension, Shimano drivetrains, hydraulic disc brakes, and dropper posts.
But what are the main differences between them and which one is right for you?
Here, we will compare the two models based on their specifications, features, performance, and price.
Specifications
The Polygon Siskiu D7 and the Polygon Siskiu T7 have some similarities in their specifications, but also some notable differences.
Below is a table that summarizes the main specs of each bike:
| Component | Siskiu D7 | Siskiu T7 |
|---|---|---|
| Frame | ALX XC 120mm travel (27.5”/29”) | ALX Trail 140mm travel (27.5”) / 135mm travel (29”) |
| Fork | RockShox Recon RL 120mm travel (27.5”/29”) | RockShox Recon RL 150mm travel (27.5”) / 140mm travel (29”) |
| Rear Shock | RockShox Deluxe Select Plus 190x45mm | RockShox Deluxe Plus Select 210x55mm |
| Drivetrain | Shimano Deore 1×11-speed | Shimano Deore 1×12-speed |
| Cassette | Shimano Deore 11-51T | Shimano Deore 10-51T |
| Brakes | Shimano MT200 hydraulic disc | Tektro HD-M735 hydraulic disc |
| Wheels | Alloy double wall 32H | Entity XL2 disc 35mm wide |
| Tires | Schwalbe Nobby Nic Performance 27.5”x2.25” / 29”x2.25” | Schwalbe Nobby Nic Performance 27.5”x2.40” / 29”x2.40” |
| Weight | 36 lbs (16.3 kg) | 34.4 lbs (15.6 kg) |
As you can see, the Siskiu T7 has more travel, a wider range cassette, more powerful brakes, wider rims and tires, and a slightly lighter weight than the Siskiu D7.
Related: Polygon Siskiu T7 vs. Vitus Mythique: Compared
Features
Both bikes have some common features that make them versatile and capable on the trails. These include:
- A modern geometry that balances stability and agility.
- A tapered head tube that improves steering precision and stiffness.
- A boost hub spacing that allows for wider tires and stronger wheels.
- A linkage-driven single pivot suspension system that offers a smooth and efficient ride.
- A flip-chip system that lets you adjust the head angle and bottom bracket height to suit different riding styles and terrain.
- A dropper post that lets you adjust your saddle height on the fly for optimal pedaling and descending.
However, the Siskiu T7 also has some additional features that give it an edge over the Siskiu D7. These include:
- A one-piece linkage that reduces flex and improves durability.
- A trunnion mount rear shock that lowers the center of gravity and increases sensitivity.
- A metric shock size that offers more compatibility and tuning options.
- A four-piston front brake caliper that provides more stopping power and modulation.
Performance
Both bikes are designed to handle a wide range of trails, from XC to enduro, but they have different strengths and weaknesses depending on the terrain and riding style.
Siskiu D7
The Siskiu D7 is more suited for riders who prefer smoother and flowier trails, or who want a more efficient and agile bike for climbing and pedaling. It has less travel, which means less weight, less bobbing, and less sag.
The Siskiu D7 also has a steeper head angle, which makes it more responsive and maneuverable at low speeds and tight corners.
Siskiu T7
This bike is more suited for riders who prefer rougher and steeper trails, or who want a more confident and plush bike for descending and jumping. The Siskiu T7 has more travel, which means more comfort, more traction, and more forgiveness.
It has a slacker head angle, which makes it more stable and composed at high speeds and steep sections.
Read Also: Revel Rascal vs. Ibis Ripmo: Compared
Price
The Polygon Siskiu D7 has an MSRP of $1,739 USD, while the Polygon Siskiu T7 has an MSRP of $1,959 USD. This means that the Siskiu T7 is $220 USD more expensive than the Siskiu D7.
Though, both bikes offer great value for money, as they come with quality components and features that are usually found on more expensive bikes. They also have positive reviews from riders and experts, who praise their performance, versatility, and fun factor.
Conclusion
The Polygon Siskiu D7 and the Polygon Siskiu T7 are both excellent choices for trail riders who want a full suspension bike that can handle a variety of terrain and trails. Yet, they have different characteristics that make them more suitable for different riding styles and preferences.
The Siskiu D7 is a better option for riders who want a more efficient and agile bike that can handle smoother and flowier trails, or who are on a tighter budget.
The Siskiu T7 is a better option for riders who want a more confident and plush bike that can handle rougher and steeper trails, or who are willing to pay a bit more for extra features and performance.
The best way to decide which bike is right for you is to test ride them yourself and see how they feel on the trails that you ride most often.