2021 Polygon Bikes Siskiu D5 M

Build

650B/27.5 in × 2.25 in

Insights

Somewhat aggressive stack and reach vs trend of full-suspension trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
580.4mm
Reach
445mm
Stack to Reach Ratio
1.3:1
Seat Tube Length, C-T
435mm
Top Tube Length, Effective/Horizontal HT Top
595.1mm
Head Tube Angle
67deg
Effective Seat Tube Angle, ETT HT Top
75.5deg
Seat Tube Exit Angle
70deg
Head Tube Length
105mm
Bottom Bracket Drop
27mm
Bottom Bracket Height
322.2mm
Chainstay Length
432mm
Chainstay Length Horizontal
431.2mm
Front-Center
726.4mm
Front-Center Horizontal
725.8mm
Wheelbase
1157mm
Fork Offset/Rake
42.3mm
Trail
102.3mm
very high
Mechanical Trail
94.1mm
Wheel Flop
36.8mm
Standover Height
696mm
Tire to Pedal Spindle Distance
With 170 mm cranks
207.2mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
152.2mm

D5 Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.25in
Tire Outer Diameter
698.3mm
Bike Length with Tires
1855.3mm
Suspension Type
Full suspension
Bar Type
Flat Bar
Fork Travel
120mm
Rear Travel
Unknown
Suspension Sag
Unknown
Frame Material
Aluminum
Fork Material
Unknown
Brake Type
Disc

Published Sizing Recommendations

Height
162.5 cm
to
175 cm
Source:https://www.polygonbikes.com/product/mountain/siskiu-d5-3/