2021 Polygon Bikes Siskiu T8

Design
Flat Bar, Full suspension
Suspension
150mm fork travel
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

S (27.5″)
M (27.5″)
M(29″)
L (29″)
XL (29″)
Stack
593.5mm
607.1mm
607.6mm
621.2mm
634.9mm
Reach
440mm
460mm
460mm
480mm
500mm
Stack to Reach Ratio
1.35:1
1.32:1
1.32:1
1.29:1
1.27:1
Seat Tube Length, Unknown
385mm
400mm
400mm
415mm
430mm
Top Tube Length, Effective/Horizontal HT Top
582.5mm
605.7mm
605.9mm
629.1mm
652.4mm
Head Tube Angle
65deg
65deg
65.5deg
65.5deg
65.5deg
Effective Seat Tube Angle, Unknown
76.5deg
76.5deg
76.5deg
76.5deg
76.5deg
Head Tube Length
105mm
120mm
90mm
105mm
120mm
Bottom Bracket Drop
20mm
20mm
39mm
39mm
39mm
Bottom Bracket Height
338mm
338mm
338mm
338mm
338mm
Chainstay Length
425mm
425mm
430mm
430mm
430mm
Chainstay Length Horizontal
424.5mm
424.5mm
428.2mm
428.2mm
428.2mm
Front-Center
748.5mm
774.8mm
766.3mm
792.4mm
818.6mm
Front-Center Horizontal
748.3mm
774.6mm
765.3mm
791.5mm
817.7mm
Wheelbase
1172.8mm
1199.1mm
1193.5mm
1219.7mm
1245.9mm
Fork Offset/Rake
37mm
37mm
42mm
42mm
42mm
Trail
126.1mm
very high
126.2mm
very high
125.7mm
very high
125.7mm
very high
125.7mm
very high
Mechanical Trail
114.3mm
114.3mm
114.4mm
114.4mm
114.4mm
Wheel Flop
48.3mm
48.3mm
47.4mm
47.4mm
47.4mm
Standover Height
666.6mm
672.5mm
676.6mm
686.2mm
695.9mm
Tire to Pedal Spindle
220.5mm
170 mm cranks
246.8mm
170 mm cranks
219.2mm
170 mm cranks
245.4mm
170 mm cranks
271.6mm
170 mm cranks
Pedal Spindle to Ground Clearance
168mm
170 mm cranks
168mm
170 mm cranks
168mm
170 mm cranks
168mm
170 mm cranks
168mm
170 mm cranks

T8 Build

S (27.5″)
M (27.5″)
M(29″)
L (29″)
XL (29″)
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
2.6in
2.6in
2.6in
2.6in
2.6in
Tire Outer Diameter
716.1mm
716.1mm
754.1mm
754.1mm
754.1mm
Bike Length with Tires
1888.9mm
1915.2mm
1947.6mm
1973.8mm
2000mm

Published Sizing Recommendations

Height
152.5 cm
to
165 cm
162.5 cm
to
175 cm
172.5 cm
to
185 cm
182.5 cm
to
195 cm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Source:https://www.polygonbikes.com/shop/bikes/mountain/trail/siskiu-t8-2/