	420	455	485	510	530	550	570
Stack	512mm	525mm	543mm	562mm	580mm	599mm	619mm
Reach	370mm	375mm	382mm	387mm	394mm	402mm	409mm
Stack to Reach Ratio	1.38:1	1.4:1	1.42:1	1.45:1	1.47:1	1.49:1	1.51:1
Top Tube Length, Effective/Horizontal Unknown	505mm	514mm	526mm	543mm	563mm	577mm	591mm
Head Tube Angle	70.6deg	71.6deg	72.5deg	72.9deg	72.9deg	72.9deg	72.9deg
Seat Tube Angle	75.5deg	74.8deg	74.8deg	74.5deg	73.8deg	73.5deg	73.3deg
Head Tube Length	101mm	112mm	129.5mm	148mm	167mm	187mm	207mm
Bottom Bracket Drop	74mm	74mm	72mm	72mm	72mm	72mm	72mm
Bottom Bracket Height	267mm	267mm	269mm	269mm	269mm	269mm	269mm
Chainstay Length	408mm	408mm	408mm	410mm	410mm	412mm	412mm
Chainstay Length Horizontal	401.2mm	401.2mm	401.6mm	403.6mm	403.6mm	405.7mm	405.7mm
Front-Center	575mm	577mm	582mm	589mm	602mm	615mm	628mm
Front-Center Horizontal	570.2mm	572.2mm	577.5mm	584.6mm	597.7mm	610.8mm	623.9mm
Wheelbase	971.5mm	973.5mm	979.1mm	988.2mm	1001.3mm	1016.4mm	1029.5mm
Fork Offset/Rake	43.4mm	44.8mm	44.9mm	44.8mm	45.3mm	44.6mm	44.5mm
Fork Length, Unknown	377mm	377mm	377mm	377mm	377mm	377mm	377mm
Trail	74.1mm high	66.2mm high	60.5mm mid/neutral	58.1mm mid/neutral	57.5mm mid/neutral	58.3mm mid/neutral	58.3mm mid/neutral
Mechanical Trail	69.9mm	62.8mm	57.7mm	55.5mm	55mm	55.7mm	55.8mm
Wheel Flop	23.2mm	19.8mm	17.4mm	16.3mm	16.2mm	16.4mm	16.4mm
Tire to Pedal Spindle	64mm 170 mm cranks	66mm 170 mm cranks	71mm 170 mm cranks	78mm 170 mm cranks	91mm 170 mm cranks	104mm 170 mm cranks	117mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	97mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks

	420	455	485	510	530	550	570
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	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	30mm	30mm	30mm	30mm	30mm	30mm
Tire Width Max	35mm	35mm	35mm	35mm	35mm	35mm	35mm
Tire Outer Diameter	682mm	682mm	682mm	682mm	682mm	682mm	682mm
Bike Length with Tires	1653.5mm	1655.5mm	1661.1mm	1670.2mm	1683.3mm	1698.4mm	1711.5mm

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

Performance Road

Source:https://www.colnago.com/en-tw/premium-bikes/c72-road-bike/technical-specifications

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2026 Colnago C72 Base

Geometry

Base Build

Stack and Reach vs. Category Trend