Bicycle Archive · Specification report

2022 Polygon Siskiu T8

Velopedia Archive ID 900001779

Overview

Model year	2022
Brand	Polygon
Model	SISKIU T8
Bicycle type	Mountain
Archive ID	900001779
Original MSRP	$2,199.00
Colors	Charcoal Black; Purple Black
Sizes	27.5” SMALL; 27.5” MEDIUM; 29” MEDIUM; 29” LARGE; 29” XTRA LARGE

Frameset

Frame construction	ALX Trail Frame 140mm Travel (27.5”) / 135mm Travel (29”), Taper H/T
Frame material	Aluminum
Fork	FOX 34 Rhythm 150mm (27.5") / 140mm (29") Travel
Rear shock	FOX Float DPS Special Tuning E2E:210x55mm, Hardware:8MMX25mm

Drivetrain

Shifters	Shimano SLX SL-M7100-R, 1X12-Speed Trigger
Rear derailleur	Shimano SLX RD-M7100-SGS Direct Attach
Crankset	Shimano MT-510-1 Boost 32T
Bottom bracket	Shimano 2-Piece Crankset BSA Threaded
Cassette	12 Speed 11-51T
Chain	KMC X12 12SPEED
Pedals	Alloy Flat Pedal W / Replaceable PIN & Reflector

Brakes

Brakes	Tektro HD-M745 4-Pistons Hydraulic Disc Brakes; Levers: Tektro Lever; Rotors: Shimano SM-RT54 180mm Center-Lock

Cockpit & contact points

Headset	Zero Stack (ZS) Sealed Bearing for Taper Head Tube, ZS 44/28.6 \| ZS 56/40
Handlebar	Entity Xpert, Alloy W:780mm R:20mm BB:35mm
Stem	Entity Xpert Alloy, EXT: 35mm, BB: 35mm, R/D: 7 Degree
Saddle	Entity Xtent
Seatpost	Dropper Post Tranz-X 150mm (S-M) 170 (L-XL) Travel, Zero Offset, 30.9mm

Wheels & tires

Wheels	Entity XL2 Disc 584-35 (27.5”) / 622-35 (29”)
Rims	584 / 622-35 32H for Tyre 584 / 622-54/76 Tubeless Ready
Front tire	Performance Tire, 27.5"X2.60"/29”X2.60"
Rear tire	Performance Tire, 27.5"X2.60"/29”X2.60"

Geometry · S (27.5″)

Seat tube	385 mm
Effective top tube	582.5 mm
Head tube	105 mm
Head-tube angle	65°
Seat-tube angle	76.5°
Actual seat-tube angle	71°
Chainstay / rear center	425 mm
Wheelbase	1172.8 mm
Bottom-bracket drop	20 mm
Bottom-bracket height	335 mm
Reach	440 mm
Stack	593.5 mm
Standover height	666.6 mm

Geometry · M (27.5″)

Seat tube	400 mm
Effective top tube	605.7 mm
Head tube	120 mm
Head-tube angle	65°
Seat-tube angle	76.5°
Actual seat-tube angle	71°
Chainstay / rear center	425 mm
Wheelbase	1199.1 mm
Bottom-bracket drop	20 mm
Bottom-bracket height	335 mm
Reach	460 mm
Stack	607.1 mm
Standover height	672.5 mm

Geometry · M (29″)

Seat tube	400 mm
Effective top tube	605.9 mm
Head tube	90 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Actual seat-tube angle	70.5°
Chainstay / rear center	430 mm
Wheelbase	1193.5 mm
Bottom-bracket drop	39 mm
Bottom-bracket height	335 mm
Reach	460 mm
Stack	607.6 mm
Standover height	676.6 mm

Geometry · L (29″)

Seat tube	415 mm
Effective top tube	629.1 mm
Head tube	105 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Actual seat-tube angle	70.5°
Chainstay / rear center	430 mm
Wheelbase	1219.7 mm
Bottom-bracket drop	39 mm
Bottom-bracket height	335 mm
Reach	480 mm
Stack	621.2 mm
Standover height	686.2 mm

Geometry · XL (29″)

Seat tube	430 mm
Effective top tube	652.4 mm
Head tube	120 mm
Head-tube angle	65.5°
Seat-tube angle	76.5°
Actual seat-tube angle	70.5°
Chainstay / rear center	430 mm
Wheelbase	1245.9 mm
Bottom-bracket drop	39 mm
Bottom-bracket height	335 mm
Reach	500 mm
Stack	634.9 mm
Standover height	695.9 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 13, 2026.