SISKIU T: Trail-Ready Performance
SISKIU T7 with UDH
Features
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Updated geometry
Updated from the previous version, the 64.5° head angle provides stability on steep descents, and the 77° seat tube angle puts you in an efficient, upright pedalling position. 430mm chainstays keep corning snappy, whilst a 39mm bb drop, shorter seat seat tubes and low standover improves handling.
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UDH compatible
With UDH dropout standard, the SISKIU T is now compatible with all modern shifting systems available on the market.
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Top tube accessory mount
Compatible with aftermarket accessories, the top tube mounts make it possible to carry all your spares necessary trailside repair - no backpack needed.
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Built for Flow
With a lightweight alloy frame, 140mm of rear travel, and stable 29" wheels, it’s designed to carry momentum and stay composed through every section of the trail.
Specification
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Frameset
FramesetForkRear Shock
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Drivetrain
ShifterCrankCassetteRear DerailleurBBChainPedal
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Cockpit
SaddleSeatpostHandlebarHandlestemHeadset
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Wheel & Tire
Wheel SetWheel SizeTireRimHubSpokes
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Brake
Brake LeverBrake CaliperRotor
Geometry & Size
| S | M | L | XL | |
|---|---|---|---|---|
| Height (cm) | 155-165 | 165-175 | 175-185 | 185-195 |
| Seat Tube Length (A) | 390 15.35 | 400 15.75 | 415 16.34 | 430 16.93 |
| Seat Tube Angle (B) | 71.2 2.8 | 71.2 2.8 | 71.2 2.8 | 71.2 2.8 |
| Effective Seat Tube Angle (C) | 77 3.03 | 77 3.03 | 77 3.03 | 77 3.03 |
| Head Tube Length (D) | 90 3.54 | 95 3.74 | 110 4.33 | 125 4.92 |
| Head Tube Angle (E) | 64.5 2.54 | 64.5 2.54 | 64.5 2.54 | 64.5 2.54 |
| Effective Top Tube (F) | 568 22.36 | 595 23.43 | 619 24.37 | 644 25.35 |
| Bb Height (G) | 337.5 13.29 | 337.5 13.29 | 337.5 13.29 | 337.5 13.29 |
| Bb Offset (H) | 39 1.54 | 39 1.54 | 39 1.54 | 39 1.54 |
| Chainstay Length (I) | 430 16.93 | 430 16.93 | 430 16.93 | 430 16.93 |
| Wheelbase (J) | 1186 46.69 | 1214 47.8 | 1240 48.82 | 1267 49.88 |
| Frame Reach (K) | 440 17.32 | 465 18.31 | 485 19.09 | 505 19.88 |
| Frame Stack (L) | 604 23.78 | 609 23.98 | 622 24.49 | 636 25.04 |
| Standover Height (M) | 704 27.72 | 705 27.76 | 713 28.07 | 722 28.43 |
Related Products
Tackle any steep climbs and confident on any technical descents.
Tackle any steep climbs and confident on any technical descents.
An aggressive trail bike engineered for today’s steeper, rougher terrain.
An aggressive trail bike engineered for today’s steeper, rougher terrain.
An aggressive trail bike engineered for today’s steeper, rougher terrain.
An aggressive trail bike engineered for today’s steeper, rougher terrain.
An aggressive trail bike engineered for today’s steeper, rougher terrain.
An aggressive trail bike engineered for today’s steeper, rougher terrain.
FAQ
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Can I add more travel to the fork or put it with a double crown fork?
Adding more will put the frame under stress so we don't recommend it.
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What is the Polygon Siskiu T designed for?
The Siskiu T is built for trail riding - offering a balance of climbing efficiency and descending confidence. It’s perfect for riders looking for a capable all-rounder for technical trails, flowy descents, and weekend adventures.
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Is the frame UDH-compatible?
Yes, the Siskiu T uses a UDH derailleur hanger, making it compatible with modern drivetrain systems.
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Is the Siskiu T tubeless-ready?
Yes, both the rims and tires are tubeless-ready out of the box. You’ll just need to add sealant and valves to convert.
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What is the minimum seatpost insertion depth for the Siskiu T?
240mm (S) / 250mm (M) / 265mm (L) / 280mm (XL)