Polygon Siskiu T8 Full Suspension 29" MTB

The Polygon Siskiu T8 is a highly capable trail bike built for riders who want confident handling, strong climbing performance, and smooth suspension support across technical terrain. Its ALX Trail frame delivers 135mm on the 29”, offering the perfect balance of agility, traction, and stability. Designed with modern trail geometry and a tapered head tube, the T8 provides excellent control on descents while remaining efficient and comfortable on long climbs.

Suspension performance comes from a FOX 34 Rhythm fork paired with a FOX Float DPS rear shock, offering controlled support and responsiveness on roots, rocks, and drops. The Shimano SLX 1x12 drivetrain provides crisp shifting with a wide 11–51T gear range ideal for steep climbs and fast descents. Powerful Tektro HD-M745 four-piston brakes deliver consistent stopping power, while the tubeless-ready Entity XL2 wheelset ensures stability and grip with 2.6” wide tyres.

Equipped with a TranzX dropper post, wide 780mm handlebar, and reliable alloy trail components, the Siskiu T8 delivers comfort and confidence on demanding terrain. Perfect for progressing riders and experienced trail enthusiasts, it offers excellent all-around capability for everything from technical singletrack to fast flow trails.

FEATURES

ALX Trail aluminium frame delivering 135mm (29”) of smooth, balanced suspension travel

FOX 34 Rhythm fork and FOX Float DPS rear shock offering controlled, responsive performance on technical terrain

Shimano SLX 1x12 drivetrain providing wide-range gearing and crisp shifting for trail climbs and descents

Tektro HD-M745 four-piston hydraulic disc brakes ensuring strong, reliable stopping power

Entity XL2 tubeless-ready wheelset paired with 2.6" performance tyres for superior traction and stability

TranzX dropper post improving rider control on steep climbs, descents, and technical sections

Wide 780mm Entity Xpert cockpit providing excellent leverage and precise handling on the trail

SIZE GUIDE

M Frame Size 165 to 175cm Height

L Frame Size 175 to 185cm Height

XL Frame Size 185 to 195cm Height

SPECIFICATIONS

Frame Material: ALX Trail Frame 135 mm travel (29"), tapered head tube

Fork: FOX 34 Rhythm 140 mm (29") travel

Rear Shock: FOX Float DPS, special tuning, E2E 210 x 55 mm, hardware 8 x 25 mm

Shifter: Shimano SLX SL-M7100-R, 1x12-speed trigger

Crankset: Shimano MT-510-1 Boost, 32T

Cassette: 12-speed, 11–51T

Rear Derailleur: Shimano SLX RD-M7100-SGS, direct attach

Bottom Bracket: Shimano 2-piece crankset, BSA threaded

Chain: KMC X12, 12-speed

Pedals: Alloy flat pedal with replaceable pins and reflector

Saddle: Entity Xtent

Seatpost: TranzX dropper, 150 mm (S–M) / 170 mm (L–XL) travel, zero offset, 30.9 mm

Handlebar: Entity Xpert Alloy, 780 mm width, 20 mm rise, 35 mm clamp

Stem: Entity Xpert Alloy, 35 mm extension, 35 mm clamp, 7° rise/drop

Headset: Zero Stack (ZS) sealed bearing, ZS 44/28.6 | ZS 56/40

Wheelset: Entity XL2 Disc 622-35 (29")

Tyres: Performance tyre 29" x 2.60"

Rims: 584 / 622-35, 32H, tubeless-ready

Brake Levers: Tektro lever

Brake Calipers: Tektro HD-M745, 4-piston hydraulic disc brakes

Rotors: Shimano SM-RT54, 180 mm, Center-Lock