2021 Polygon Bikes Sierra Oosten26

Category
Comfort
Design
Swept Back Bar, Rigid, non-suspension corrected
Frame
Aluminum
Fork
Steel
Features
Rim brake, Step-through
Somewhat aggressive stack and reachvs category
Very aggressive stack and reachvs category

Geometry

M
L
Stack
610mm
610mm
Reach
389.4mm
409.4mm
Stack to Reach Ratio
1.57:1
1.49:1
Seat Tube Length, Unknown
480mm
480mm
Top Tube Length, Effective/Horizontal Unknown
570mm
590mm
Top Tube Slope
15.9deg
15.4deg
Head Tube Angle
69deg
69deg
Seat Tube Angle
73.5deg
73.5deg
Head Tube Length
135mm
135mm
Bottom Bracket Drop
50mm
50mm
Bottom Bracket Height
282mm
282mm
Chainstay Length
460mm
460mm
Chainstay Length Horizontal
457.3mm
457.3mm
Front-Center
651.2mm
671.1mm
Front-Center Horizontal
649.2mm
669.2mm
Wheelbase
1106.5mm
1126.5mm
Fork Offset/Rake
41.9mm
41.9mm
Trail
82.6mm
very high
82.6mm
very high
Mechanical Trail
77.1mm
77.1mm
Wheel Flop
27.6mm
27.6mm
Standover Height
450mm
450mm
Tire to Pedal Spindle
154.2mm
165 mm cranks
174.1mm
165 mm cranks
Pedal Spindle to Ground Clearance
117mm
165 mm cranks
117mm
165 mm cranks

Oosten26 Build

M
L
Wheel Size
590mm BSD
590 mm BSD
590mm BSD
590 mm BSD
Tire Width
37mm
37mm
Tire Outer Diameter
664mm
664mm
Bike Length with Tires
1770.5mm
1790.5mm
Crank Length
165mm
165mm
Handlebar Width
620mm
620mm

Published Sizing Recommendations

Height
160 cm
to
170 cm
170 cm
to
180 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
Category Trend
Comfort
Source:https://www.polygonbikes.com/id/sierra-oosten26/