SISKIU T: Trail-Ready Performance

Trail | 140mm/ 135mm Travel | ALX Alloy | 29" Wheels

The Polygon SISKIU T-Series is the definitive modern trail bike and the number one choice for riders looking for high-end performance without the big price tag. Built around a stiff, responsive alloy frame, 29er wheels and a proven 1x drivetrain, the SISKIU T balances technical climbing efficiency with aggressive descending stability.

Bike type:

Polygon Siskiu T6 Mountain Bike (MTB) 2026

SISKIU T6 with UDH

AUD $2,599.99

Color

Size

Clear

Find my size

Now available for pre-order at your local dealer.

FIND DEALER

SKU : 503430

Features

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.
UDH compatible

With UDH dropout standard, the SISKIU T is now compatible with all modern shifting systems available on the market.
Internal cable routing

Cables are now routed internally for an extra clean look, protecting them from the worst of the weather.
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.

Specification

Frameset

Frameset

ALX TRAIL 140mm TRAVEL

Fork

ROCKSHOX RECON SILVER-RL 140mm TRAVEL

Rear Shock

XFUSION O2 PRO R, E2E: 210x55mm, M8x25mm FOR BOTH SIDES
Drivetrain

Shifter

SHIMANO CUES SL-U6000, 1x10-SPEED TRIGGER

Crank

SAMOX RAC61C-018S-C55, 32T

Cassette

SHIMANO CUES CS-LG300-10, 11-48T

Rear Derailleur

SHIMANO CUES RD-U6000-GS DIRECT ATTACH

BB

SAMOX 2-PIECE CRANKSET BSA THREADED

Chain

KMC XGLIDE

Pedal

ALLOY FLAT PEDAL W/ REPLACEABLE PIN & REFLECTOR
Cockpit

Saddle

LINC XTENT, CR-MO ø 7mm

Seatpost

DROPPER POST XFUSION MANIC LC 150mm (S, M) / 170mm (L, XL) TRAVEL, DxL: 30.9x429mm (S, M) / 473mm (L, XL)

Handlebar

POLYGON EXPERT, W: 780mm, BB: 35mm, R/D: 30mm, B: 9degree

Handlestem

POLYGON EXPERT, EXT: 35mm, BB: 35mm, R/D: 0degree

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

F: SHIMANO HB-TC500-15-B THRU AXLE 15x110mm 32H CENTER-LOCK / R: SHIMANO FH-MT400-B THRU AXLE 12x148mm 32H CENTER-LOCK

Spokes

F: STAINLESS J-BEND 29" NDS:292 / DS:294 / R: SHIMANO FH-MT400-B THRU AXLE 12x148mm 32H CENTER-LOCK
Brake

Brake Lever

SHIMANO BL-MT200

Brake Caliper

SHIMANO HYDRAULIC DISC BRAKES

Rotor

SHIMANO SM-RT10, 180mm CENTER-LOCK

Geometry & Size

mm inch

Find your 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	723 28.46