2023 CHAPTER2 AO Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Carbon/Composite
Fork
Carbon/Composite
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

XS
S
M
L
XL
Stack
521mm
548mm
576mm
605mm
634mm
Reach
355mm
366mm
377mm
388mm
399mm
Stack to Reach Ratio
1.47:1
1.5:1
1.53:1
1.56:1
1.59:1
Seat Tube Length, C-T
460mm
480mm
500mm
530mm
560mm
Top Tube Length, Effective/Horizontal HT Top
509mm
528mm
547mm
567mm
587mm
Top Tube Slope
9.4deg
9.9deg
10.5deg
10.2deg
9.9deg
Head Tube Angle
69deg
70deg
71deg
72deg
72deg
Seat Tube Angle
73.5deg
73.5deg
73.5deg
73.5deg
73.5deg
Head Tube Length
105mm
130mm
155mm
179mm
209mm
Bottom Bracket Drop
74mm
74mm
74mm
74mm
74mm
Bottom Bracket Height
272mm
272mm
272mm
272mm
272mm
Chainstay Length
420mm
420mm
420mm
420mm
420mm
Chainstay Length Horizontal
413.4mm
413.4mm
413.4mm
413.4mm
413.4mm
Front-Center
589mm
601mm
612mm
617mm
638mm
Front-Center Horizontal
584.6mm
596.6mm
607.6mm
612.6mm
632.6mm
Wheelbase
998mm
1010mm
1021mm
1026mm
1046mm
Fork Offset/Rake
55mm
55mm
55mm
50mm
50mm
Fork Length, Unknown
399mm
399mm
399mm
399mm
399mm
Trail
73.9mm
high
67.4mm
high
61mm
mid/​neutral
59.9mm
mid/​neutral
59.9mm
mid/​neutral
Mechanical Trail
69mm
63.3mm
57.7mm
56.9mm
56.9mm
Wheel Flop
24.7mm
21.7mm
18.8mm
17.6mm
17.6mm
Standover Height
740mm
764mm
790mm
820mm
849mm
Tire to Pedal Spindle
73mm
170 mm cranks
85mm
170 mm cranks
96mm
170 mm cranks
101mm
170 mm cranks
122mm
170 mm cranks
Pedal Spindle to Ground Clearance
102mm
170 mm cranks
102mm
170 mm cranks
102mm
170 mm cranks
102mm
170 mm cranks
102mm
170 mm cranks

Base Build

XS
S
M
L
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
700C/29 in
622 mm BSD
Tire Width
35mm
35mm
35mm
35mm
35mm
Tire Width Max
42mm
42mm
42mm
42mm
42mm
Tire Outer Diameter
692mm
692mm
692mm
692mm
692mm
Bike Length with Tires
1690mm
1702mm
1713mm
1718mm
1738mm
Stem Length
80mm
90mm
100mm
110mm
120mm

Published Sizing Recommendations

Height
165 cm
to
175 cm
10 cm
to
180 cm
175 cm
to
185 cm
180 cm
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
Category Trend
All-road/Gravel
Source:.