2021 Polygon
Siskiu N9 Dual Suspension
A 27.5″ aluminum frame full suspension enduro bike with high-end components.
Compare the full range
| MSRP | $3,099 |
|---|---|
| Weight | 39.9 lbs |
| Frame | Aluminum |
| Suspension | Full, 170 / 170mm |
| Fork | Fox Performance Float 36 |
| Shock | Fox Float DPX2 Performance |
| Wheels | 27.5″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | XT |
| Brakes | Hydraulic Disc |
| Seatpost | Dropper |
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 Comparison
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
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...
Nov 2018
What makes this bike special? It’s not just the price, though at $3699, this one is hard to beat. Even when stacked up against other direct-to-the-consumer brands like YT, this bike holds its own in sheer value for money terms. The frameset is far from revolutionary, all aluminium, with a simple faux-bar suspension system. But …
Smart component choices.
Great fork and shock.
Geometry that most riders will feel instantly comfortable with.
The price, obviously!
Short travel dropper post.
No water bottle mount.
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 AM / Enduro Alloy Boost frame 170mm travel (27.5”) / 160mm travel (29”), BB Standard: BSA, 73mm, Threaded |
|---|---|
| Fork | Fox 36 Performance, Boost 15X110MM, 170MM (27.5”) / 160MM (29”) travel Travel: 170mm Spring Type: Air |
| Shock | Fox Performance Float DPX2 Air shock Travel: 170mm Spring Type: Air |
| Bottom Bracket | SHIMANO BSA THREADED |
| Stem | RACE FACE AEFFECT, ALLOY E:35MM R:0DEG BB:35MM |
| Handlebar | RACE FACE AEFFECT, ALLOY W:780MM R:20MM BB:35MM |
| Saddle | Entity Assault Saddle |
| Seatpost | EXA Form Drive SI Dropper Post (150mm S-M, 170mm L-XL), Zero offset, 30.9mm Type: Dropper |
| Pedals | Alloy |
| Rear Derailleur | SHIMANO XT RD-M8100 12-SPEED DA |
|---|---|
| Front Derailleur | N/A |
| Crank | Shimano Deore XT FC-M8100-1 BOOST 12SP 32T 170MM (S-M) 175MM (L-XL) |
| Shifters | SHIMANO XT SLM8100 12-SPEED |
| Cassette | SHIMANO XT CSM8100 12-SPEED 10-51T |
| Brakes | TRP Slate 4-Piston Hydraulic 180mm rotors Type: Hydraulic Disc |
| Rims | Entity XL2 Disc 29-584 (27.5”) / 29-622 (29”), tubeless ready |
|---|---|
| Spokes | Stainless Steel Spokes |
| Front Hub | Entity, sealed bearings |
| Rear Hub | Entity, sealed bearings |
| Tires | WTB Vigilante 27.5”X2.6 / 29”X2.3 |
Last updated September 23
Not listed for 934 days