2019 No. 22 Bicycle Company Aurora Base

	48cm	50cm	52cm	54cm	56cm	58cm	60cm
Stack	510mm	521mm	538mm	562mm	582mm	601mm	620mm
Reach	355mm	363mm	369mm	378mm	382mm	396mm	405mm
Stack to Reach Ratio	1.44:1	1.44:1	1.46:1	1.49:1	1.52:1	1.52:1	1.53:1
Seat Tube Length, C-C	445mm	462mm	490mm	518mm	540mm	562mm	588mm
Top Tube Length, Effective/Horizontal Center	495mm	510mm	525mm	545mm	560mm	580mm	600mm
Head Tube Angle	70.5deg	71deg	71.2deg	72.2deg	72.5deg	73deg	73deg
Seat Tube Angle	75deg	74.5deg	74deg	73.5deg	73deg	73deg	72.5deg
Head Tube Length	100mm	110mm	130mm	150mm	170mm	190mm	210mm
Bottom Bracket Drop	78mm	78mm	75mm	75mm	75mm	73mm	73mm
Bottom Bracket Height	261mm	261mm	264mm	264mm	264mm	266mm	266mm
Chainstay Length	415mm	415mm	415mm	418mm	418mm	418mm	420mm
Chainstay Length Horizontal	407.6mm	407.6mm	408.2mm	411.2mm	411.2mm	411.6mm	413.6mm
Front-Center	567mm	574mm	584mm	586mm	594mm	609mm	624mm
Front-Center Horizontal	561.6mm	568.7mm	579.2mm	581.2mm	589.3mm	604.6mm	619.7mm
Wheelbase	969.2mm	976.3mm	987.3mm	992.4mm	1000.5mm	1016.2mm	1033.3mm
Fork Offset/Rake	50.6mm	50.2mm	49.7mm	44.6mm	45.2mm	45.1mm	45.4mm
Trail	66.4mm high	63.6mm mid/neutral	62.9mm mid/neutral	62mm mid/neutral	59.5mm mid/neutral	56.5mm mid/neutral	56.2mm mid/neutral
Mechanical Trail	62.6mm	60.1mm	59.5mm	59.1mm	56.7mm	54mm	53.7mm
Wheel Flop	20.9mm	19.6mm	19.2mm	18.1mm	17.1mm	15.8mm	15.7mm
Standover Height	731mm	745mm	770mm	795mm	814mm	838mm	859mm
Tire to Pedal Spindle	58mm 170 mm cranks	65mm 170 mm cranks	75mm 170 mm cranks	77mm 170 mm cranks	85mm 170 mm cranks	100mm 170 mm cranks	115mm 170 mm cranks
Pedal Spindle to Ground Clearance	91mm 170 mm cranks	91mm 170 mm cranks	94mm 170 mm cranks	94mm 170 mm cranks	94mm 170 mm cranks	96mm 170 mm cranks	96mm 170 mm cranks

	48cm	50cm	52cm	54cm	56cm	58cm	60cm
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	28mm	28mm	28mm	28mm	28mm	28mm	28mm
Tire Width Max	32mm	32mm	32mm	32mm	32mm	32mm	32mm
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1647.2mm	1654.3mm	1665.3mm	1670.4mm	1678.5mm	1694.2mm	1711.3mm

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

Endurance Road

Source:https://22bicycles.com/collections/made-to-order-bikes/products/aurora-made-to-order

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2019 No. 22 Bicycle Company Aurora Base

Geometry

Base Build

Stack and Reach vs. Category Trend