2020 Bird Bikes Aether 9C Base

Design
Flat Bar, Full suspension
Frame
Carbon/Composite
Suspension
0% sag
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

Medium (M)
Medium Long (ML)
Large (L)
Extra Large (XL)
Stack
625mm
634mm
643mm
652mm
Reach
455mm
484mm
512mm
541mm
Stack to Reach Ratio
1.37:1
1.31:1
1.26:1
1.21:1
Seat Tube Length, C-T
395mm
420mm
455mm
480mm
Top Tube Length, Effective/Horizontal HT Top
605mm
630mm
655mm
680mm
Head Tube Angle
65deg
65deg
65deg
65deg
Effective Seat Tube Angle, ETT HT Top
76.5deg
77deg
77.5deg
78deg
Seat Tube Exit Angle
71deg
72deg
73deg
74deg
Head Tube Length
110mm
120mm
130mm
140mm
Bottom Bracket Drop
40mm
40mm
40mm
40mm
Bottom Bracket Height
334.5mm
334.5mm
334.5mm
334.5mm
Chainstay Length
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
428.1mm
428.1mm
428.1mm
428.1mm
Front-Center
774.9mm
807.9mm
840.8mm
873.8mm
Front-Center Horizontal
773.9mm
806.9mm
839.9mm
872.9mm
Wheelbase
1202mm
1235mm
1268mm
1301mm
Fork Offset/Rake
42mm
42mm
42mm
42mm
Fork Length (Axle-To-Crown)
551mm
551mm
551mm
551mm
Trail
128.3mm
very high
128.3mm
very high
128.3mm
very high
128.3mm
very high
Mechanical Trail
116.3mm
116.3mm
116.3mm
116.3mm
Wheel Flop
49.1mm
49.1mm
49.1mm
49.1mm
Standover Height
707mm
707mm
707mm
707mm
Tire to Pedal Spindle
230.4mm
170 mm cranks
263.4mm
170 mm cranks
296.3mm
170 mm cranks
329.3mm
170 mm cranks
Pedal Spindle to Ground Clearance
164.5mm
170 mm cranks
164.5mm
170 mm cranks
164.5mm
170 mm cranks
164.5mm
170 mm cranks

Base Build

Medium (M)
Medium Long (ML)
Large (L)
Extra Large (XL)
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 Width Max
2.6in
2.6in
2.6in
2.6in
Tire Outer Diameter
749mm
749mm
749mm
749mm
Bike Length with Tires
1951mm
1984mm
2017mm
2050mm

Published Sizing Recommendations

Height
5 ft 6 in
to
5 ft 6 in
5 ft 10 in
to
5 ft 10 in
6 ft 2 in
to
6 ft 2 in
6 ft 4 in
to
6 ft 4 in

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.bird.bike/aether-9c/