Siskiu T8
OverviewAbout the Polygon Siskiu T8
The Polygon Siskiu T8 is a mountain bike, built on a aluminium frame, listed at $3,099.99. An off-road bike for trails, with grippy tyres and trail-ready geometry.
SizingWhat size Siskiu T8 do I need?
Enter your height to see the size Polygon recommends.
| Size | Rider height | In feet |
|---|---|---|
| S | 155 to 165 cm | 5 ft 1 in to 5 ft 5 in |
| M | 165 to 175 cm | 5 ft 5 in to 5 ft 9 in |
| L | 175 to 185 cm | 5 ft 9 in to 6 ft 1 in |
| XL | 185 to 195 cm | 6 ft 1 in to 6 ft 5 in |
Rider heights from Polygon's size chart. Height is a starting point: arm and leg length, flexibility and riding style all matter, so a test ride beats any chart. How bike sizing works.
SpecificationsWhat we know
- Brand
- Polygon
- Category
- Mountain
- Frame
- Aluminium
- Brakes
- Disc
- Frame sizes
- S, M, L, XL
- Price
- $3,099.99, BikesOnline price, checked 14 Oct 2026
Specs and pricing are listed in AUD and sourced from Australian retail listings. Confirm the current details and availability with the seller before purchase.
GeometrySize M (29 inch)
- Stack
- 607.6 mm
- Reach
- 460 mm
- Stack/reach
- 1.32
- Head angle
- 65.5 deg
- Seat angle
- 76.5 deg
- Wheelbase
- 1193.5 mm
- Chainstay
- 430 mm
- BB drop
- 39 mm
- Standover
- 676.6 mm
Drivetrain & buildFull specification
- Groupset
- Shimano SLX
- Shifting
- Mechanical
- Drive
- 1x
- Speeds
- 12
- Crank
- Shimano MT-510-1, Boost, 32T
- Cassette
- 12-Speed, 11-51T
- Rear derailleur
- Shimano SLX RD-M7100-SGS, Direct Attach
- Brakes
- Tektro HD-M745, 4-piston hydraulic disc
- Rotors
- 180mm, Shimano SM-RT54, Center-Lock
- Wheelset
- Entity XL2 Disc
- Stock tyre
- 29x2.60
- Tubeless
- Yes
- Fork material
- Fox 34 Rhythm
- BB standard
- BSA Threaded
- Seatpost
- TranzX dropper, 150mm travel (S-M), zero offset, 30.9mm
- Cockpit
- Entity Xpert alloy bar, 780mm width, 20mm rise; Entity Xpert alloy stem, 35mm
- Saddle
- Entity Xtent
- Mounts
- top tube accessory mount
- UDH
- Yes
SuspensionMTB detail
- Front travel
- 140 mm
- Rear travel
- 135 mm
- Fork
- Fox 34 Rhythm
- Fork stanchions
- 34 mm
- Shock
- Fox Float DPS
- Wheel config
- 29
- Dropper
- TranzX
- Dropper travel
- 150 mm
- Discipline
- Trail
Bike DNAWhat the numbers say
- Steering
- A 65.5 deg head angle points to slack, trail and enduro handling.
Derived from the published geometry and gearing above. It describes the numbers, not a ride test.
BikeFinder Data Profile: geometry and specification researched from published sources (polygonbikes.com product page + backfill 2026-09-27: polygonbikes.com), verified 2026-09-04. This is a specification analysis, not a physical ride review.
Where to buyStockist
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