2024 Van Nicholas Astraeus Base

	XS	S	M	L	XL
Stack	509mm	514mm	535mm	555mm	581mm
Reach	377mm	385mm	385mm	393mm	393mm
Stack to Reach Ratio	1.35:1	1.34:1	1.39:1	1.41:1	1.48:1
Seat Tube Length, C-T	450mm	480mm	510mm	540mm	570mm
Seat Tube Length, C-C	410mm	440mm	470mm	500mm	520mm
Top Tube Length, Effective/Horizontal HT Top	518mm	527mm	543mm	563mm	582mm
Top Tube Length, Effective/Horizontal Unknown	503mm	515mm	530mm	551mm	566mm
Top Tube Slope	8.6deg	5.7deg	5deg	4deg	3.9deg
Head Tube Angle	71.5deg	71.5deg	72deg	72.5deg	73deg
Seat Tube Angle	74.5deg	74.5deg	73.5deg	73deg	72deg
Head Tube Length	110mm	115mm	135mm	155mm	180mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	269mm	269mm	269mm	269mm	269mm
Chainstay Length	415mm	415mm	415mm	415mm	415mm
Chainstay Length Horizontal	409.1mm	409.1mm	409.1mm	409.1mm	409.1mm
Front-Center	581mm	590mm	592mm	603mm	606mm
Front-Center Horizontal	577mm	586mm	588mm	599mm	602mm
Wheelbase	986mm	995mm	997mm	1008mm	1011mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm
Trail	60.7mm mid/neutral	60.7mm mid/neutral	57.6mm mid/neutral	54.5mm mid/neutral	51.4mm mid/neutral
Mechanical Trail	57.6mm	57.6mm	54.8mm	51.9mm	49.1mm
Wheel Flop	18.3mm	18.3mm	16.9mm	15.6mm	14.4mm
Standover Height	712mm	732mm	758mm	784mm	806mm
Tire to Pedal Spindle	72mm 170 mm cranks	81mm 170 mm cranks	83mm 170 mm cranks	94mm 170 mm cranks	97mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 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://titanium.vannicholas.com/en/road-bikes/astraeus

Geometry