Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals

2019 Polygon

Siskiu T8 27.5

A 27.5″ aluminum frame full suspension enduro bike with upper mid-range components.

Manufacturer Price

$2,499
FrameAluminum
SuspensionFull, 150 / 150mm
ForkRockShox Revelation RC
ShockRockShox Deluxe RT3
Wheels27.5″ Aluminum
Drivetrain1 × 11
GroupsetXT, SLX
BrakesShimano Deore Hydraulic Disc
SeatpostDropper
Where to Buy
Similar Bikes
Top Comparison
Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Siskiu T8 27.5
Other Enduro bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

24 mph

Siskiu T8 27.5

26 mph

Similar Bikes

Highest gear

(descending)

Reviews
Loam Wolf
Review: Polygon Siskiu T8

Dec 2020

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 Review

Outdoor Gear Lab
Polygon Siskiu T8

Nov 2020 · Jeremy Benson

The Polygon Siskiu T8 is an excellent mid-travel trail bike offered at a reasonable price. Polygon's consumer-direct sales model helps keep it affordable...

Highs
  • Awesome build for the price

  • Versatile

  • Well-rounded performance

Lows
  • Firm grips

  • Saddle shape

Read Review

NSMB
Polygon Siskiu N9 29er - First Impressions

Nov 2019

The Polygon Siskiu N9 29er boasts an SRAM GX drivetrain, Fox suspension, good tires, solid geometry, and a nicely manufactured 160mm travel aluminum frame for 2800 USD.

Read Review

Pinkbike
Review: Polygon Siskiu T8

Sep 2018 · Richard Cunningham

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

Highs
  • Lively acceleration and climbing

  • Precise handling and cornering

  • Excellent value

Lows
  • No room for a water bottle

  • Not plush in rough terrain

  • No size small with 29-inch wheels

Read Review

MBR
Polygon Siskiu D5 review - MBR

Aug 2018 · Alan Muldoon

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.

Highs
  • Super sleek frame design.

Lows
  • No rebound adjustment on shock.

Read Review

BikeRadar
Polygon Siskiu T8 review

Jun 2018 · Russell Eich

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

Read Review

Flow Mountain Bike
Tested: Polygon Siskiu T8

Dec 2017

Watch the full video review!  What am I looking at here? This is a thoroughly modern trail bike, made affordable. You can grab the Siskiu with either 29″ or 27.5″ wheels, with 140mm or 150mm respectively, though depending on your frame size you might only have one option. In a size small, it’s 27.5” only, sorry shorties. In …

Highs
  • Sensational pricing.

  • All the mod cons for proper trail riding.

  • Sharp looker!

Lows
  • Not tubeless ready.

  • Slack seat angle.

Read Review

Bikerumor
Just In: Polygon Siskiu T fits the wheels to the frame for 27.5 & 29" builds

Nov 2017 · Zach Overholt

It’s almost 2018 and we’re still no closer to settling on one wheel size. Don’t expect that to change any time soon, but what you can expect is new options around every corner. Joining a number of manufacturers who have already offered different wheel sizes for the same model, Polygon is introducing the new Siskiu …

Read Review

Geometry
Specs
Build
Frame

Aluminum

BB StandardBSA, 73mm, Threaded

Fork

RockShox Revelation RC Solo Air, Boost 15x110mm

Travel150mm

Spring TypeAir

Shock

RockShox Deluxe RT3 Debonair, special tuning, 210x55mm, 8x25mm hardware

Travel150mm

Bottom Bracket

BSA, threaded

Headset

ZS 44/28.6 | ZS 56/40

Stem

Entity Xpert, alloy, 45mm length, 7° rise, 31.8mm

Handlebar

Entity Xpert, alloy, 780mm length, 12mm rise, 31.8mm bore

Saddle

Entity Assault

Seatpost

TranzX dropper, 150mm travel, zero offset

TypeDropper

Pedals

Alloy

Groupset
Rear Derailleur

Shimano XT RD-M8000, GS

Front Derailleur

None

Crank

Prowheel CHARM, 2 piece

Shifters

Shimano SLX SL-M7000, I-spec II

Cassette

SunRace CSMX8 EAZ, 11-speed, 11-46 tooth

Chain

KMC X-11

Chain Guide

None

Brakes

Shimano BR-MT500

TypeShimano Deore Hydraulic Disc

Brake Levers

Shimano BR-MT500

Wheels
Rims

Entity XL2 disc 29-584 wheelset

Spokes

Entity XL2 disc 29-584 wheelset

Front Hub

Entity XL2 disc 29-584 wheelset

Rear Hub

Entity XL2 disc 29-584 wheelset

Tires

Schwalbe Nobby Nic, 27.5”x2.60"

Rider Notes
Riders Also Viewed

First added March 17

Last updated March 17

Not listed for 2,633 days