2018 Soma Fabrications Stanyan Base

	52	54	56	58	60
Stack	533mm	538mm	544mm	563mm	582mm
Reach	377mm	391mm	399mm	403mm	406mm
Stack to Reach Ratio	1.41:1	1.38:1	1.36:1	1.4:1	1.43:1
Seat Tube Length, C-T	520mm	540mm	560mm	580mm	600mm
Top Tube Length, Effective/Horizontal Center	535mm	550mm	565mm	575mm	590mm
Top Tube Slope	3.8deg	2.1deg	0.9deg	0.8deg	1deg
Head Tube Angle	73deg	73deg	73deg	73.5deg	73.5deg
Seat Tube Angle	73.5deg	73.5deg	73deg	73deg	72.5deg
Head Tube Length	113mm	118mm	125mm	143mm	162mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	267mm	267mm	267mm	267mm	267mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	419.2mm	419.2mm	419.2mm	419.2mm	419.2mm
Front-Center	568.1mm	585mm	594.9mm	599.9mm	609.8mm
Front-Center Horizontal	563.8mm	580.8mm	590.8mm	595.8mm	605.8mm
Wheelbase	983mm	1000mm	1010mm	1015mm	1025mm
Fork Offset/Rake	45mm	45mm	45mm	45mm	45mm
Trail	56mm mid/neutral	56mm mid/neutral	56mm mid/neutral	52.9mm mid/neutral	52.9mm mid/neutral
Mechanical Trail	53.5mm	53.5mm	53.5mm	50.7mm	50.7mm
Wheel Flop	15.7mm	15.7mm	15.7mm	14.4mm	14.4mm
Tire to Pedal Spindle	61.1mm 170 mm cranks	78mm 170 mm cranks	87.9mm 170 mm cranks	92.9mm 170 mm cranks	102.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	97mm 170 mm cranks	97mm 170 mm cranks	97mm 170 mm cranks	97mm 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:http://www.somafab.com/archives/product/stanyan-18-frame-set

Geometry