2021 Koga Colmaro Extreme

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

Geometry

S
M
L
XL
Stack
547mm
577mm
605mm
636mm
Reach
376mm
378mm
388mm
389mm
Stack to Reach Ratio
1.45:1
1.53:1
1.56:1
1.63:1
Seat Tube Length, Unknown
460mm
500mm
550mm
600mm
Top Tube Length, Effective/Horizontal Unknown
544mm
561mm
579mm
596mm
Top Tube Slope
11.9deg
10.7deg
8.3deg
6.5deg
Head Tube Angle
70.5deg
71deg
71deg
71.5deg
Seat Tube Angle
73deg
72.5deg
72.5deg
72deg
Head Tube Length
120mm
150mm
180mm
210mm
Bottom Bracket Drop
75mm
75mm
75mm
75mm
Bottom Bracket Height
264mm
264mm
264mm
264mm
Chainstay Length
435mm
435mm
435mm
435mm
Chainstay Length Horizontal
428.5mm
428.5mm
428.5mm
428.5mm
Front-Center
595.6mm
603.1mm
622.6mm
628.7mm
Front-Center Horizontal
590.9mm
598.5mm
618.1mm
624.2mm
Wheelbase
1019.4mm
1026.9mm
1046.6mm
1052.7mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
Trail
72.3mm
high
69.1mm
high
69.1mm
high
66mm
high
Mechanical Trail
68.2mm
65.4mm
65.4mm
62.6mm
Wheel Flop
22.8mm
21.3mm
21.3mm
19.9mm
Tire to Pedal Spindle
86.6mm
170 mm cranks
94.1mm
170 mm cranks
113.6mm
170 mm cranks
119.7mm
170 mm cranks
Pedal Spindle to Ground Clearance
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks

Extreme Build

S
M
L
XL
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
Tire Width
47mm
47mm
47mm
47mm
Tire Outer Diameter
678mm
678mm
678mm
678mm
Bike Length with Tires
1697.4mm
1704.9mm
1724.6mm
1730.7mm

Published Sizing Recommendations

Height
160 cm
to
172 cm
170 cm
to
182 cm
180 cm
to
190 cm
188 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:KOGA Bicycles