Polygon Siskiu T8 - 2026
Polygon Siskiu T8 - 2026
Description
EXCEED YOUR EXPECTATIONS
The ace: designed to excel on any terrain
Steep uneven climbs, wet roots, rock gardens, drops, and tight switchbacks—there’s nothing like the adrenaline that surges through your veins on trails like these. Our Siskiu T8 with UDH Trail MTB is the ace for it all. With short chainstays, a slack head tube, and an optimized design that inherits the true DNA of a trail ace, it’s built to perform. Now equipped with a UDH mech hanger, it's compatible with T-Type drivetrains for seamless integration with modern shifting systems. Get ready to ride a bike whose DNA matches yours.
Specification
Frameset
ALX TRAIL 140mm TRAVEL
Fork
FOX 34 FLOAT RHYTHM 140mm TRAVEL
Rear Shock
FOX FLOAT P-S E2E: 210x55mm, HARDWARE: M8x25MM FOR BOTH SIDES
Drivetrain
Shifter
SHIMANO SLX SL-M7100, 1x12-SPEED TRIGGER
Crank
SHIMANO FC-M6120-1 BOOST, 32T
Cassette
SHIMANO SLX CS-M7100-12, 10-51T MICROSPLINE
Rear Derailleur
SHIMANO SLX RD-M7100-SGS DIRECT ATTACH
BB
SHIMANO 2-PIECE CRANKSET BSA THREADED
Chain
KMC NEW X-12
Pedal
ALLOY FLAT PEDAL W/ REPLACEABLE PIN & REFLECTOR
Cockpit
Saddle
LINC XTENT CR-MO ø 7mm
Seatpost
XFUSION MANIC LC 150mm (S, M) / 170mm (L, XL) TRAVEL, 30.9x429mm (S, M) / 473mm (L, XL)
Handlebar
POLYGON EXPERT, W: 780MM BB: 35MM R/D: 30MM
Handlestem
POLYGON EXPERT E: 35MM BB: 35MM R/D: 0
Headset
FSA NO.57E FOR TAPER H/T ZS 44/28.6 | ZS 56/40
Wheel & Tire
Wheel Set
POLYGON MT6
Wheel Size
29"
Tire
MAXXIS DISSECTOR 29"x2.40"
Rim
584 / 622-29 32H FOR TYRE 584 / 622-54/76 W/ TUBELESS READY RIM TAPE
Hub
REAR HUB: SHIMANO HB-TC500-15-B THRU AXLE 15x110mm 32H CENTER-LOCK / REAR HUB: SHIMANO FH-TC500-MS-B THRU AXLE 12x148mm 32H CENTER-LOCK
Spokes
FRONT SPOKE: STAINLESS J-BEND 29" NDS:292 / DS:294 / REAR SPOKE: STAINLESS J-BEND 29" NDS:292 / DS:290
Brake
Brake Lever
SHIMANO BL-M4100
Brake Caliper
SHIMANO BL-M4100
Rotor
SHIMANO SM-RT54, 180mm CENTER-LOCK
Geometry
| S | M | L | XL | |
|---|---|---|---|---|
| Height (cm) | 155-165 | 165-175 | 175-185 | 185-195 |
| Seat Tube Length (A) | 390 | 400 | 415 | 430 |
| Seat Tube Angle (B) | 71.2 | 71.2 | 71.2 | 71.2 |
| Effective Seat Tube Angle (C) | 77 | 77 | 76 | 77 |
| Head Tube Length (D) | 89 | 95 | 110 | 125 |
| Head Tube Angle (E) | 64.5 | 64.5 | 64.5 | 64.5 |
| Effective Top Tube (F) | 568 | 595 | 619 | 644 |
| Bb Height (G) | 337.5 | 337.5 | 337.5 | 337.5 |
| Bb Offset (H) | 39 | 39 | 39 | 39 |
| Chainstay Length (I) | 430 | 430 | 432 | 430 |
| Wheelbase (J) | 1186 | 1214 | 1240 | 1267 |
| Frame Reach (K) | 440 | 465 | 485 | 505 |
| Frame Stack (L) | 604 | 609 | 622 | 636 |
| Standover Height (M) | 704 | 705 | 711 | 723 |
Payment methods
Choose from the payment methods below, including pay-later options where available. Your available methods and any payment terms will be shown at checkout.
The details that make a difference
- ID
- Originated in
- 1989
- Since
Designed with purpose
- In-house manufacturing from frame building to final assembly
- A broad range covering mountain, road, adventure and urban riding
- Design development informed by professional rider feedback
