Polygon Siskiu N series is an aluminum full suspension enduro bike with a combination of parts and technology design to be ready to be ridden in the most demanding of conditions. An aggressive, agile, and fast bike for the rider who wants to defeat their personal limitations all-day in the mountains to the local trails.

All models of Siskiu N are built around a lightweight aluminum frame adopting the new Boost Hub standards, with 170mm(27.5″) and 160mm(29″) suspension fork travel and utilizing a FAUX BAR rear suspension system, keeping the frame weight down while reinforcing high-stress areas and reducing flex under heavy loads. The rear swing triangle also features a unibody pivot bridge that stiffens the rear wheel and reduces lateral forces on the rear shock when under load. The frame is finished off with a tapered headset, rear thru axle, internal routing for gears and 125mm (S-M)/150mm(L-XL) dropper post. The Polygon Siskiu N is equipped with a no-worries and durable SRAM GX or SRAM NX 1x drivetrain that further improving the bike’s performance. Those combinations are resulting a bike that does not compromise; efficient when pedaling uphill, precise handling, and stable to beat any descents.

SPECIFICATIONS

 

FRAMEALX AM / ENDURO 170MM TRAVEL (27.5”) / 160MM TRAVEL (29”), TAPER H/T
FORKFOX 36 RHYTHM BOOST 15X110MM, 170MM (27.5”) / 160MM (29”)
REAR SHOCKFOX PERFORMANCE FLOAT DPX2 E2E:205X65 TRUNNION
HANDLEBARENTITY XPERT, ALLOY
STEMENTITY XPERT, ALLOY
HEADSETZS 44/28.6 | ZS 56/40
SADDLEENTITY ASSAULT
SEATPOSTEXA FORM DRIVE SI 125MM(S-M) 150MM (L-XL) TRAVEL, ZERO OFFSET, 30.9MM
CRANKSETTRUVATIV DESCENDANT 6K ALUMINUM EAGLE 32T NARROW-WIDE BOOST
BOTTOM BRACKETSRAM DUB BSA
PEDALALLOY
CHAINSRAM GX EAGLE 12-SPEED
CASSETTE SPROCKETSRAM XG 1275 EAGLE 12-SPEED 10-50T
REAR DERAILEURSRAM GX EAGLE 12-SPEED
SHIFTING LEVERSRAM GX EAGLE 12-SPEED
BRAKE LEVERTRP SLATE
FRONT BRAKETRP SLATE 4-PISTON
REAR BRAKETRP SLATE 4-PISTON
TYRESCHWALBE MAGIC MARRY 27.5”X2.60” / 29”X2.35”
WHEELSETENTITY XL2 DISC 29-584 (27.5”) / 29-622 (29”)

 

FRAMEALX AM / ENDURO 170MM TRAVEL (27.5”) / 160MM TRAVEL (29”), TAPER H/T
FORKROCKSHOX YARI RC DEBONAIR BOOST 15X110MM, 170MM (27.5”) / 160MM (29”)
REAR SHOCKFOX PERFORMANCE FLOAT DPX2 E2E:205X65 TRUNNION
HANDLEBARENTITY XPERT, ALLOY
STEMENTITY XPERT, ALLOY
HEADSETZS 44/28.6 | ZS 56/40
SADDLEENTITY ASSAULT
SEATPOSTEXA FORM DRIVE SI 125MM(S-M) 150MM (L-XL) TRAVEL, ZERO OFFSET, 30.9MM
CRANKSETTRUVATIV DESCENDANT 6K ALUMINUM EAGLE 32T NARROW-WIDE BOOST
BOTTOM BRACKETSRAM DUB BSA
PEDALALLOY
CHAINSRAM NX EAGLE 12-SPEED
CASSETTE SPROCKETSRAM 1230 EAGLE 12-SPEED 11-50T
REAR DERAILEURSRAM NX EAGLE 12-SPEED
SHIFTING LEVERSRAM NX EAGLE 12-SPEED
BRAKE LEVERTEKTRO ORION
FRONT BRAKETRP SLATE 4-PISTON
REAR BRAKETRP SLATE 4-PISTON
TYRESCHWALBE MAGIC MARRY 27.5”X2.60” / 29”X2.35”
WHEELSETENTITY XL2 DISC 29-584 (27.5”) / 29-622 (29”)
ABCDEFGHIJKLM
SizeSeat Tube LengthSeat Tube AngleEffective Seat Tube AngleHead Tube LengthHead Tube AngleEffective Top TubeBB HeightBB OffsetChainstay LengthWheelbaseFrame ReachFrame StackStandover Height
S (27.5″)40071.57510065.5 563.83555 DROP 435 1153.9 405 592.7 720.7
M (27.5″)43071.57510065.5 593.8 3555 DROP 435 1183.9 435 592.7 718.8
M(29″)43069.5759065.5 600.1 343.5 33 DROP 439.4 1194.9 435 616.1 720
L (29″)47069.57510265.5 624.5 343.5 33 DROP 439.4 1221.1 456.6 626.1 743.1
XL (29″)52069.57511565.5 656.2 343.5 33 DROP 439.4 1255.3 485 638.8 773.7

TECHNOLOGY

BOOST SYSTEM

The Hub Boost System allows for wider flanges and stronger spoke tensions to be used, adding lateral stiffness to the rim and improving bike handling.

FAUX Bar Suspension System

Polygon’s FAUX BAR suspension system on the Siskiu N was created to give you a bomb-proof design that will require a lot less servicing and maintenance, thus allowing you spend more time on the saddle. FAUX BAR bikes are built with a longer rear shock stroke that allows for more progressive bump reading, allowing the bike to track the trail better and give you a smoother ride when it gets rough.

One Piece Linkage

Provided with one piece linkage to boosting the optimization of the suspension and increases stiffness while decreases weight.

Tapered Headtube

A Tapered Headtube allows for a broader contact area between the frame and fork, greatly improving bike handling and front wheel stiffness, important when you’re railing berms at high speed. Using an oversize headtube, designers were able to optimize welding points between the downtube, toptube and headtube to create an unyielding front end.

Wheel Fit Size System

The Polygon Wheel Fit Size System assures each frame size is paired with a wheel size that perfectly fits the rider’s height for better efficiency and optimal riding experience. This allowed us to concentrate on what the bike should feel like on the trails, guaranteeing a consistent riding experience for all riders. Small and Medium frames are paired with 27.5” wheels, whilst Medium, Large and XL frames use 29“ wheels.

Tubeless Ready Wheelset

The Entity XL2 rims are ready to be converted into tubeless, enhancing grip and comfort when running low pressures on rougher trails.