The ace: designed to excel on any terrain

EXCEED YOUR EXPECTATIONS

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 T6 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 UDHmech 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.

Bike type:

Polygon Siskiu T6 Mountain Bike (MTB) 2026

Polygon Siskiu T6 Dual Suspension Mountain Bike (MTB)

SISKIU T6 with UDH

$2,599.99

Color

Size

Clear

Find my size

Now available for pre-order at your local dealer.

FIND DEALER

SKU : 503430

Features

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.
Climb with Ease, Charge Down Descents

There’s more in less. The simplicity of a 1x drivetrain lets you focus on the ride - not on constantly shifting gears, while the dropper post gives you the control to climb effortlessly and charge down descents. It all adds up to a smoother, more enjoyable trail experience.
Designed for an Aggressive Ride

With a slack head tube angle and short chainstays, the Siskiu T puts you in a position of confidence. Breeze through tight switchbacks and attempt lines you've never dreamt of before. Paired with powerful 4-piston hydraulic disc brakes, it’s built to put you out front—leading the pack.
UDH equipped for Next-Gen Shifting

With the UDH dropouts, the Siskiu T is now compatible with T-Type drivetrains for seamless integration with modern shifting systems.

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

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