2021 CHIRU Chilkoot Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Titanium
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

Geometry

S
M
L
XL
Stack
548mm
568mm
588mm
608mm
Reach
375mm
381mm
387mm
394mm
Stack to Reach Ratio
1.46:1
1.49:1
1.52:1
1.54:1
Seat Tube Length, C-T
500mm
525mm
535mm
575mm
Top Tube Length, Effective/Horizontal Center
530mm
550mm
565mm
580mm
Top Tube Slope
7.5deg
7deg
8deg
5.9deg
Head Tube Angle
70.7deg
71deg
71.3deg
71.5deg
Seat Tube Angle
74.2deg
73.4deg
73.2deg
73deg
Head Tube Length
130mm
150mm
170mm
190mm
Bottom Bracket Drop
66mm
66mm
66mm
66mm
Bottom Bracket Height
285mm
285mm
285mm
285mm
Chainstay Length
423mm
423mm
423mm
423mm
Chainstay Length Horizontal
417.8mm
417.8mm
417.8mm
417.8mm
Front-Center
594.9mm
604.8mm
615.7mm
626.7mm
Front-Center Horizontal
591.2mm
601.2mm
612.2mm
623.2mm
Wheelbase
1009mm
1019mm
1030mm
1041mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
Fork Length (Axle-To-Crown)
395mm
395mm
395mm
395mm
Trail
75.2mm
high
73.3mm
high
71.3mm
high
70mm
high
Mechanical Trail
71mm
69.3mm
67.5mm
66.4mm
Wheel Flop
23.5mm
22.6mm
21.7mm
21.1mm
Tire to Pedal Spindle
73.9mm
170 mm cranks
83.8mm
170 mm cranks
94.7mm
170 mm cranks
105.7mm
170 mm cranks
Pedal Spindle to Ground Clearance
115mm
170 mm cranks
115mm
170 mm cranks
115mm
170 mm cranks
115mm
170 mm cranks

Base Build

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
Tire Width
40mm
40mm
40mm
40mm
Tire Width Max
47mm
47mm
47mm
47mm
Tire Outer Diameter
702mm
702mm
702mm
702mm
Bike Length with Tires
1711mm
1721mm
1732mm
1743mm

Published Sizing Recommendations

Height
163 cm
to
172 cm
170 cm
to
180 cm
178 cm
to
190 cm
188 cm
to
200 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:http://www.chirubikes.com/frames-chilkoot