2026
2026 Polygon Siskiu T T8
The 2026 Polygon Siskiu T T8 sits at the aggressive end of the range for a trail bike, with a slacker head angle and a shorter rear center. Reach 440 to 505 mm, stack 604 to 636 mm. The Siskiu T T8 build comes with Shimano SLX shifting and Polygon MT6 wheels.
Source: polygonbikes.com. Checked .
Key facts
- Brand
- Polygon
- Model
- Siskiu T
- Model year
- 2026
- Frame
- T8
- Type
- Trail
- Geometry labels
- S, M, L, and XL
- Drivetrain
- Shimano SLX
- Rear shock
- Fox Float P-S
- Wheels
- Polygon MT6
- Geometry
- Complete for every size
- Source
- polygonbikes.com
- Checked
Geometry by size
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Reach(mm) | 440 | 465 | 485 | 505 |
| Stack(mm) | 604 | 609 | 622 | 636 |
| Head tube angle(°) | 64.5 | 64.5 | 64.5 | 64.5 |
| Seat tube angle(°) | 71.2 | 71.2 | 71.2 | 71.2 |
| Effective top tube(mm) | 568 | 595 | 619 | 644 |
| Chainstay length(mm) | 430 | 430 | 432 | 430 |
| Wheelbase(mm) | 1186 | 1214 | 1240 | 1267 |
| BB height(mm) | 337.5 | 337.5 | 337.5 | 337.5 |
| Standover(mm) | 704 | 705 | 711 | 723 |
| Seat tube length(mm) | 390 | 400 | 415 | 430 |
| Head tube length(mm) | 89 | 95 | 110 | 125 |
Stock build
16 parts
Frame
Polygon Siskiu T
Suspension
Fox 34 Float Rhythm
Fox Float P-S
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Polygon Expert
Keep your Siskiu T T8 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
✓Sources agreeMManufacturer
Quick answers
- Which size or configuration labels have geometry for the 2026 Polygon Siskiu T T8?
- Geometry is listed for S, M, L, and XL.
- What are the reach and stack of the 2026 Polygon Siskiu T T8 in size L?
- In size L, reach is 485 mm and stack is 622 mm.
- What is the head tube angle of the 2026 Polygon Siskiu T T8?
- The head tube angle is 64.5 degrees in every size.
- What does the 2026 Polygon Siskiu T T8 ship with?
- The stock build includes Polygon Siskiu T, Fox 34 Float Rhythm, Shimano SL-M7100-R SLX, and Polygon MT6.
- Which years of the Polygon Siskiu T are on Quiver?
- Quiver has the Polygon Siskiu T for 2026 and 2027.
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
