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2020 Polygon

SISKIU T Frameset

A 27.5″ / 29″ aluminum frame full suspension enduro frameset.

Manufacturer Price

$999
Weight7.1 lbs (frame)  
FrameAluminum
SuspensionFull, 150mm rear
ShockRockShox Deluxe RT3
Wheels27.5″ / 29″
Where to Buy
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Top Comparison
Insights
Sizing
SM

5'0" – 5'5"

MD

5'3" – 5'9"

LG

5'7" – 6'1"

XL

5'11" – 6'5"

Rider Fit Notes

None yet.

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Reviews

Summary

The Polygon Siskiu trail bike series is praised for its modern geometry, competitive pricing, and improved specifications, making it a strong contender in the affordable trail bike market. Reviews highlight its effective rear suspension and trail-ready handling, though some models suffer from subpar fork performance and component limitations. The Siskiu stands out for its value, offering features like dropper posts and quality drivetrains at lower price points than many competitors.

Pros
  • Modern, well-considered geometry

  • Competitive pricing with improved specifications

  • Effective rear suspension with good progression

  • Dropper post included at affordable price points

  • Quality drivetrains and brakes in higher models

Cons
  • Subpar fork performance in some models

  • Component choices limit the bike's potential

  • Uncomfortable stock saddle and grips

  • Limited water bottle mounting in some frames

  • Heavy weight with 29in wheels in certain builds

Key Quotes
The bike seemed to offer more performance than the price would imply, and it seemed like a platform worthy of future upgrades.
Bikerumor logoBikerumor
Putting together well-appointed bikes for less money than its big-name competitors is a game that Polygon plays exceedingly well.
Flow Mountain Bike logoFlow Mountain Bike
The potential that's unrealized with this bike is both impressive at the price and depressing at the same time.
NSMB logoNSMB

Feedback?

View all reviews

Beta
The Beta Tests: Polygon Siskiu T8

Dec 2021 · Ryan Palmer

Possibly the best $2,500 bike we've ever ridden.

Highs
  • Fully capable, modern trail bike geometry

  • Excellent parts spec for the price

  • Internal cable routing

Lows
  • Resin-only brake rotors create weak braking

  • Suspension platform isn't very sophisticated

Read Review

Two Wheeling Tots
Polygon Siskiu D24 Full Suspension Kids Mountain Bike

Oct 2021 · Kelly Jorgensen

An affordable full suspension 24" kids mountain bike? The Polygon Siskiu D24 is a perfect blend of price and performance. Read the review!

Read Review

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

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

Aug 2020 · Zach Overholt

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

Read Review

Flow Mountain Bike
Polygon Siskiu D6 Review | Is the Siskiu D6 a steal of a deal? Or too good to be true?

Jun 2020

With its sub-$2K price tag, the Polygon Siskiu D6 aims to break the normal rules in the hardtail vs full suspension debate. Featuring a dropper post, progressive geometry, and a new frame that will take a water bottle, there's a lot to like. But is it too good to be true? Read on for our Polygon Siskiu D6 review.

Highs
  • Fantastic trail-ready geometry

  • A dropper post at this price? So good!

  • Nice under-bar dropper lever

  • Smooth and reliable Shimano brakes

  • Bonkers price

Lows
  • The fork-shaped object

  • Quick-release front axle

  • Handlebar needs more sweep

  • Brake levers & shifter don't quite line up

Read Review

NSMB
Polygon Siskiu N9 160mm 29'er Review

Feb 2020

Polygon's 160mm aluminum 29'er looks to deliver value and performance and shows potential 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

Geometry
Specs
Build
Frame

ALX ALLOY TRAIL FRAME, 150mm(27.5") / 140mm(29") TRAVEL, FOR THRU AXLE BOOST 12x148mm O.L.D.

ColorBlack

Fork

FOR 150mm (27.5”) / 140mm (29”) TRAVEL (NOT INCLUDED)

Shock

ROCKSHOX DELUXE RT3, DEBONAIR SPECIAL TUNING (210x55mm, 8x25mm hardwares)

Travel150mm

Bottom Bracket

BSA THREADED 73mm (NOT INCLUDED)

Stem

-

Handlebar

-

Saddle

-

Seatpost

30.9mm (NOT INLCUDED)

TypeRigid

Pedals

-

Groupset
Rear Derailleur

-

Crank

FOR BOOST 53mm CHAINLINE (NOT INCLUDED)

Shifters

-

Cassette

-

Chain

-

Brakes

-

Wheels
Rims

-

Tires

27"x2.60" / 29"x2.35" MAX (NOT INCLUDED)

Rider Notes
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First added April 28

Last updated December 11

Not listed for 1,998 days