2025 Koga Colmaro Extreme

	XS	S	M	L	XL
Stack	566mm	577mm	587mm	610mm	629mm
Reach	380mm	390mm	400mm	405mm	415mm
Stack to Reach Ratio	1.49:1	1.48:1	1.47:1	1.51:1	1.52:1
Seat Tube Length, C-T	470mm	490mm	520mm	550mm	580mm
Top Tube Slope	12.7deg	11.5deg	9.2deg	8.4deg	7.2deg
Head Tube Angle	70deg	71deg	71deg	72deg	72deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	100mm	110mm	120mm	140mm	160mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm	75mm
Bottom Bracket Height	286mm	286mm	286mm	286mm	286mm
Chainstay Length	442mm	442mm	442mm	442mm	442mm
Chainstay Length Horizontal	435.6mm	435.6mm	435.6mm	435.6mm	435.6mm
Front-Center	613mm	622mm	636.8mm	641.8mm	652.7mm
Front-Center Horizontal	608.4mm	617.4mm	632.4mm	637.4mm	648.4mm
Wheelbase	1044mm	1053mm	1068mm	1073mm	1084mm
Fork Offset/Rake	51mm	51mm	51mm	51mm	51mm
Trail	77.1mm high	70.4mm high	70.4mm high	63.7mm mid/neutral	63.7mm mid/neutral
Mechanical Trail	72.5mm	66.5mm	66.5mm	60.6mm	60.6mm
Wheel Flop	24.8mm	21.7mm	21.7mm	18.7mm	18.7mm
Tire to Pedal Spindle	82mm 170 mm cranks	91mm 170 mm cranks	105.8mm 170 mm cranks	110.8mm 170 mm cranks	121.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks

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.

Category Trend

Source:https://www.koga.com/nl/racefietsen/colmaro-extreme-turtle-green.htm?frame=H

Geometry