SISKIU D5
A 27.5″ aluminum frame full suspension trail bike with mid-range components.
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MSRP | $1,249 |
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Weight | 37.5 lbs |
Frame | Aluminum |
Suspension | Full, 120 / 100mm |
Fork | Suntour XCM |
Shock | Suntour |
Wheels | 27.5″ Aluminum |
Drivetrain | 1 × 9 |
Groupset | Alivio, Altus |
Brakes | Hydraulic Disc |
For This Bike
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Siskiu model range
View Comparison5'0" – 5'5"
5'3" – 5'9"
5'7" – 6'1"
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Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
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!
Oct 2021 · Jeremy Benson
As the price of bikes continue to skyrocket, Polygon bucks that trend with their direct-to-consumer sales model and the affordable Siskiu D7. This...
Reasonable price
Comes with a dropper post
Fun on a range of terrain
Efficient climber
Playful on descents
Non-boost fork
Some cable rattle over rough terrain
Can be overwhelmed on aggressive trails
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
Aug 2020
Looking for a full suspension mountain bike you can actually afford? The Polygon Siskiu T just got overhauled, and it looks good.
Jun 2020
The Polygon Siskiu T7 LTD is a solid, affordable mountain bike and one that will certainly make a lot of rider’s dreams come true. Aggressive riders looking for a great budget bike should read our detailed review of the Polygon Siskiu T7 here!
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 XC 120MM TRAVEL (27.5”) TAPER H/T QR BOOST Color: Grey / Maroon |
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Fork | SR SUNTOUR XCM HLO, QR 100MM, 120MM (27.5”) TRAVEL Travel: 100mm Spring Type: Coil |
Shock | SR SUNTOUR RAIDON LO AIR E2E:190X51MM HARDWARE:M8X22MM Travel: 120mm Spring Type: Coil |
Bottom Bracket | INCLUDE CRANKSET |
Headset | ZS 44/28.6 | ZS 56/40 |
Stem | ENTITY SPORT, ALLOY |
Handlebar | ENTITY SPORT, ALLOY |
Saddle | ENTITY VOID SADDLE |
Seatpost | ENTITY SPORT, ALLOY Type: Rigid |
Pedals | - |
Rear Derailleur | SHIMANO RD-M3100 |
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Crank | SHIMANO ALTUS FC-MT2102 36T |
Shifters | SHIMANO SL-M3100, 2x9 SPEED TRIGGER |
Cassette | SHIMANO CS-HG200 11-36T |
Chain | KMC X9 |
Chain Guide | none |
Brakes | SHIMANO HYDRAULIC DISC BRAKE Type: Hydraulic Disc |
Brake Levers | SHIMANO BL-M201 HYDRAULIC DISC BRAKE |
Rims | ALLOY DOUBLE WALL 32H |
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Tires | SPIDERBAIT TIRE 27.5"x2.25" |
Last updated February 12
Not listed for 406 days