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A 27.5″ / 29″ aluminum frame full suspension trail bike with upper mid-range components.
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Manufacturer Price
$2,369| Weight | 33.5 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Full, 140 / 150mm |
| Fork | Fox Rhythm Float 34 |
| Shock | Fox Float DPS Performance |
| Wheels | 27.5″ / 29″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | SLX |
| Brakes | Tektro Hydraulic Disc |
| Seatpost | Dropper |
5'0" – 5'5"
5'3" – 5'9"
5'7" – 6'1"
5'11" – 6'5"
None yet.
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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.
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
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
The bike seemed to offer more performance than the price would imply, and it seemed like a platform worthy of future upgrades.
Putting together well-appointed bikes for less money than its big-name competitors is a game that Polygon plays exceedingly well.
The potential that's unrealized with this bike is both impressive at the price and depressing at the same time.
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Dec 2021 · Ryan Palmer
Possibly the best $2,500 bike we've ever ridden.
Fully capable, modern trail bike geometry
Excellent parts spec for the price
Internal cable routing
Resin-only brake rotors create weak braking
Suspension platform isn't very sophisticated

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!

Jan 2021
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.
Exceptionally capable package for the money
Confidence-inspiring geometry
Grippy high-volume rubber
Supple & supportive suspension
Sporty handling for a tough trail bike
Handlebars need more sweep
Brakes aren't hugely powerful
The wheels ain't light

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

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...
Awesome build for the price
Versatile
Well-rounded performance
Firm grips
Saddle shape

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.

Feb 2020
Polygon's 160mm aluminum 29'er looks to deliver value and performance and shows potential for 2800 USD...

Sep 2018 · Richard Cunningham
Add this well-outfitted and sharp-handling 29er to your short list of affordable trail bikes.
Lively acceleration and climbing
Precise handling and cornering
Excellent value
No room for a water bottle
Not plush in rough terrain
No size small with 29-inch wheels
| Frame | ALX TRAIL FRAME 140MM TRAVEL (27.5”) / 135MM TRAVEL (29”), TAPER H/T BB Standard: BSA, 73mm, Threaded Color: Purple Black |
|---|---|
| Fork | FOX 34 RHYTHM BOOST 15X110MM, 150MM (27.5”) / 140MM (29”) TRAVEL Travel: 150mm Spring Type: Air |
| Shock | FOX FLOAT DPS SPECIAL TUNING E2E:210X55MM, HARDWARE:8MMX25MM Travel: 140mm |
| 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 | TRANZ-X 150MM (S-M) 170 (L-XL) TRAVEL, ZERO OFFSET, 30.9MM Type: Dropper |
| Pedals | - |
| 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 Type: Tektro Hydraulic Disc |
| Rims | ENTITY XL2 DISC 584-35 (27.5”) / 622-35 (29”) |
|---|---|
| Tires | PERFORMANCE TIRE, 27.5”X2.40” / 29”X2.40” |
First added April 28
Last updated April 22
Not listed for 1,866 days