2021 Polygon SISKIU T8

A 27.5″ / 29″ aluminum frame full suspension trail bike with upper mid-range components, priced in the middle of the SISKIU model range. Compare the full range

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2021 Polygon SISKIU T8
MSRP$2,499
Weight33.5 lbs
SuspensionFull
Travel140mm rear, 150mm front
FrameAluminum
ForkFox Rhythm Float 34
Wheels27.5″ / 29″
Drivetrain1 × 12
GroupsetSLX, Shimano
BrakesHydraulic Disc
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Gearing

1 × 12 — 12 speed

SISKIU T8

28 mph

Similar Bikes

26 mph

The SISKIU T8 is geared about the same as similar bikes for riding up hills.

Similar bikes won‘t keep up with the SISKIU T8 while riding downhill or sprinting.


Estimated Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more

Spec level →$0$500$1,000$1,500$2,000
This bike
Other trail bikes

Reviews

January 2021

Flow Mountain Bike
Polygon Siskiu T8 Review | Big fun without the big price tag

Polygon's updated Siskiu T is proof that you don't have to spend the earth to get a very capable trail bike. Featuring on-trend geometry, a robust build kit and a host of improvements over the old model, the Siskiu T8 will have you questioning why you'd need to spend any more.

Read Full Review

December 2020

Loam Wolf
Review: Polygon Siskiu T8

POLYGON SISKIU T8 REVIEW TESTING THEN UPGRADING A BUDGET-MINDED BIKE The Polygon Siskiu T series bikes are some of the best looking, affordable dual suspension mountain bikes on the market and we get lots of questions about them. Several months back we actually made a really

Read Full Review

August 2020

Bikerumor
New Polygon Siskiu T gets the right updates for seriously competitive & affordable trail bike

Looking for a full suspension mountain bike you can actually afford? The Polygon Siskiu T just got overhauled, and it looks good.

Read Full Review

September 2018

Pinkbike
Review: Polygon Siskiu T8

Add this well-outfitted and sharp-handling 29er to your short list of affordable trail bikes.

Read Full Review

June 2018

BikeRadar
Polygon Siskiu T8 review

Polygon's Siskiu T8 is a fun example of a lower-cost trail bike that's ready to rip

Read Full Review

August 2018

MBR
Polygon Siskiu D5 review - MBR

Yes, the Polygon Siskiu D5 frame is top-notch but the parts spec is lacking. If it was £750 it'd be a steal but it's outclassed by other £1k full sussers.

Read Full Review


Geometry

Sizing
SM

5'0" – 5'5"

MD

5'3" – 5'9"

LG

5'7" – 6'1"

XL

5'11" – 6'5"


Specs
Build
Frame

ALX TRAIL FRAME 140MM TRAVEL (27.5”) / 135MM TRAVEL (29”), TAPER H/T

BB StandardBSA, 73mm, threaded

Fork

FOX 34 RHYTHM BOOST 15X110MM, 150MM (27.5”) / 140MM (29”) TRAVEL

Rear Shock

FOX FLOAT DPS SPECIAL TUNING E2E:210X55MM, HARDWARE:8MMX25MM

Bottom Bracket

BSA THREADED

Stem

ENTITY XPERT, ALLOY E:35MM R:7DEG BB:35MM

Handlebar

ENTITY XPERT, ALLOY W:780MM R:20MM BB:35MM

Saddle

ENTITY XTENT

Seatpost

DROPEPR POST 150mm (S & M) / 170mm (L & XL)

Groupset
Rear Derailleur

SHIMANO RD-M7100 SLX

Crank

SHIMANO FC-MT510-1 BOOST 32T 170MM (S-M)/175MM (L-XL)

Shifters

SHIMANO SL-M7100-R SLX

Cassette

SHIMANO CS-M7100-12 SLX 10-51T

Chain

KMC X12 12SPEED

Brakes

TEKTRO HD-M745 4 PISTON

Wheels
Rims

ENTITY XL2 DISC 584-35 (27.5”) / 622-35 (29”)

Tires

PERFORMANCE TIRE, 27.5”X2.40” / 29”X2.40”

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2021 Polygon SISKIU T8
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