2020 Sonder Cortex Base

Design
Flat Bar, Full suspension
Frame
Aluminum
Suspension
120mm fork travel
Features
Disc brake
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
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

Small
Medium
Large
X-Large
Stack
602mm
606mm
615mm
625mm
Reach
420mm
440mm
465mm
485mm
Stack to Reach Ratio
1.43:1
1.38:1
1.32:1
1.29:1
Seat Tube Length, C-T
400mm
425mm
465mm
485mm
Top Tube Length, Effective/Horizontal HT Top
587mm
608mm
636mm
658mm
Head Tube Angle
66deg
66deg
66deg
66deg
Effective Seat Tube Angle, ETT HT Top
74.5deg
74.5deg
74.5deg
74.5deg
Head Tube Length
100mm
105mm
115mm
125mm
Bottom Bracket Drop
40mm
40mm
40mm
40mm
Bottom Bracket Height
337.5mm
337.5mm
337.5mm
337.5mm
Chainstay Length
442mm
445mm
447mm
450mm
Chainstay Length Horizontal
440.2mm
443.2mm
445.2mm
448.2mm
Front-Center
729.9mm
748.9mm
775.8mm
796.8mm
Front-Center Horizontal
728.8mm
747.8mm
774.8mm
795.8mm
Wheelbase
1169mm
1191mm
1220mm
1244mm
Fork Offset/Rake
51mm
51mm
51mm
51mm
Fork Length (Axle-To-Crown)
540mm
540mm
540mm
540mm
Trail
112.3mm
very high
112.3mm
very high
112.3mm
very high
112.3mm
very high
Mechanical Trail
102.5mm
102.5mm
102.5mm
102.5mm
Wheel Flop
41.7mm
41.7mm
41.7mm
41.7mm
Tire to Pedal Spindle
182.4mm
170 mm cranks
201.4mm
170 mm cranks
228.3mm
170 mm cranks
249.3mm
170 mm cranks
Pedal Spindle to Ground Clearance
167.5mm
170 mm cranks
167.5mm
170 mm cranks
167.5mm
170 mm cranks
167.5mm
170 mm cranks

Base Build

Small
Medium
Large
X-Large
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
2.5in
2.5in
2.5in
2.5in
Tire Outer Diameter
755mm
755mm
755mm
755mm
Bike Length with Tires
1924mm
1946mm
1975mm
1999mm

Published Sizing Recommendations

Height
5 ft 2 in
to
5 ft 7 in
5 ft 6 in
to
5 ft 10 in
5 ft 9 in
to
6 ft 2 in
6 ft 2 in
to

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://alpkit.com/collections/sonder-cortex/products/sonder-cortex-gx-eagle