2021 Cotic Tonic Base

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

Geometry

XS
Small
Medium
Large
Stack
555.1mm
563.8mm
580.1mm
598.1mm
Reach
360.6mm
370.1mm
382.9mm
397mm
Stack to Reach Ratio
1.54:1
1.52:1
1.52:1
1.51:1
Seat Tube Length, C-T
450mm
480mm
510mm
540mm
Top Tube Length, Actual C-C
525mm
537mm
560mm
580mm
Top Tube Slope
14.2deg
11.6deg
9.9deg
8.4deg
Head Tube Angle
71deg
71.5deg
72deg
72deg
Seat Tube Angle
73.5deg
73.5deg
73deg
73deg
Head Tube Length
128mm
135mm
150mm
170mm
Bottom Bracket Drop
70mm
70mm
70mm
70mm
Bottom Bracket Height
276mm
276mm
276mm
276mm
Chainstay Length
425mm
425mm
425mm
425mm
Chainstay Length Horizontal
419.2mm
419.2mm
419.2mm
419.2mm
Front-Center
576.1mm
584mm
595.9mm
619.8mm
Front-Center Horizontal
571.8mm
579.8mm
591.8mm
615.8mm
Wheelbase
991mm
999mm
1011mm
1035mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
Fork Length, Unknown
400mm
400mm
400mm
400mm
Trail
71.5mm
high
68.3mm
high
65.1mm
high
65.1mm
high
Mechanical Trail
67.7mm
64.8mm
61.9mm
61.9mm
Wheel Flop
22mm
20.6mm
19.1mm
19.1mm
Tire to Pedal Spindle
60.1mm
170 mm cranks
68mm
170 mm cranks
79.9mm
170 mm cranks
103.8mm
170 mm cranks
Pedal Spindle to Ground Clearance
106mm
170 mm cranks
106mm
170 mm cranks
106mm
170 mm cranks
106mm
170 mm cranks

Base Build

XS
Small
Medium
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
35mm
35mm
35mm
35mm
Tire Outer Diameter
692mm
692mm
692mm
692mm
Bike Length with Tires
1683mm
1691mm
1703mm
1727mm
Stem Length
90mm
90mm
90mm
90mm

Published Sizing Recommendations

Height
155 cm
to
166 cm
165 cm
to
175 cm
173 cm
to
180 cm
180 cm
to
191 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
All-road/Gravel
Source:https://www.cotic.co.uk/product/tonic#sizing