Polygon Colossus T8 Full Suspension 29" MTB 2026

THE MODERN TRAIL WORK HORSE

Where precision meets aggression, and every trail meets its match. As trails get steeper, rougher, and wilder, the bikes we ride must rise tomatch. The Collosus T Series rises to meet this new era of aggressive trailriding. Performance wise, it’s it’s lighter and more nimble than the enduro-focused Collosus N, yet more confident and capable on descents than theversatile Siskiu T. Born from the chaos of modern trails, it’s built to charge harder, cornerdeeper, and descent confidently.

FEATURES

ACX carbon trail frameset engineered for enduro performance with 140mm rear travel

RockShox Lyrik Select 160mm fork and Super Deluxe Select+ rear shock for superior control and plush suspension performance

SRAM GX Eagle 1x12 drivetrain with 10–52T cassette for wide-range climbing and fast descents

Magura MT7 hydraulic disc brakes delivering exceptional stopping power and modulation

Polygon MT6 tubeless-ready wheelset paired with Maxxis Dissector 29x2.40" tyres for grip and speed on technical terrain

Race Face Chester handlebar and Aeffect R stem for precision handling on steep and technical trails

TranzX dropper post with 150/170mm travel for improved maneuverability and confidence

SIZE GUIDE

S Frame Size 155 to 165cm Height

M Frame Size 165 to 175cm Height

L Frame Size 175 to 185cm Height

XL Frame Size 185 to 195cm Height

SPECIFICATIONS

Frame Material: ACX Trail Carbon, 140 mm travel

Fork: RockShox Lyrik Select, 160 mm travel

Rear Shock: RockShox Super Deluxe Select+, 210×55 mm

Shifter: SRAM GX SL-GX-1-A2, 1×12-speed trigger

Crankset: SRAM GX Eagle, 32T

Cassette: SRAM GX Eagle XG-1275, 10–52T

Rear Derailleur: SRAM GX Eagle GX-1-B2

Bottom Bracket: SRAM DUB BSA threaded, 73 mm

Chain: SRAM GX Eagle

Pedal: Alloy flat pedal with replaceable pins

Saddle: XTENT, CR-MO Ø7 mm

Seatpost: TranzX JD-YSP39KL, 150 mm (S, M) / 170 mm (L, XL), 34.9×456 mm / 495 mm

Handlebar: Race Face Chester 35, 780 mm, 35 mm rise, 8° bend

Stem: Race Face Aeffect R 35, 40 mm, 0° rise

Headset: FSA No.76 alloy top cover, ZS 51/28.6 | ZS 59/40

Wheelset: Polygon MT6 tubeless-ready

Wheel Size: 29"

Tyres: Maxxis Dissector 29×2.40"

Rims:
Front: Alloy double wall, 18 mm height, 30 mm width, 622-30, 32H
Rear: Alloy double wall, 18 mm height, 30 mm width, 622-30, 32H

Hubs:
Front: Alloy 15×110 mm, 32H, Center-Lock
Rear: Alloy 12×148 mm, 32H, Center-Lock, for SRAM XD driver

Spokes:
Front: 14G stainless, NDS 290 mm / DS 292 mm, 12 mm brass nipples
Rear: 14G stainless, NDS 294 mm / DS 292 mm, 12 mm brass nipples

Brake Lever: Magura MT7 with HC3 lever

Brake Caliper: Magura MT7 hydraulic disc

Rotors: Magura MDR-C CL, 180 mm