2020 ARC8 Bicycles Eero Base

	S	M	L	XL
Stack	545mm	568mm	593mm	618mm
Reach	364mm	376mm	388mm	400mm
Stack to Reach Ratio	1.5:1	1.51:1	1.53:1	1.55:1
Seat Tube Length, C-T	510mm	550mm	570mm	600mm
Top Tube Length, Effective/Horizontal Center	525mm	545mm	564mm	583mm
Top Tube Slope	6.3deg	4.4deg	4.8deg	4.3deg
Head Tube Angle	70deg	71deg	71deg	71deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	137mm	157mm	170mm	197mm
Bottom Bracket Drop	75mm	75mm	75mm	75mm
Bottom Bracket Height	286mm	286mm	286mm	286mm
Chainstay Length	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	413.3mm	413.3mm	413.3mm	413.3mm
Front-Center	593.5mm	603.4mm	623.3mm	644.1mm
Front-Center Horizontal	588.8mm	598.8mm	618.8mm	639.8mm
Wheelbase	1002mm	1012mm	1032mm	1053mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Fork Length (On-Axis)	395mm	395mm	395mm	395mm
Trail	78.2mm high	71.4mm high	71.4mm high	71.4mm high
Mechanical Trail	73.5mm	67.5mm	67.5mm	67.5mm
Wheel Flop	25.1mm	22mm	22mm	22mm
Tire to Pedal Spindle	62.5mm 170 mm cranks	72.4mm 170 mm cranks	92.3mm 170 mm cranks	113.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks	116mm 170 mm cranks

Published Sizing Recommendations

Height

170 cm

176 cm

175 cm

181 cm

180 cm

187 cm

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.arc8bicycles.com/framesets/eero-frameset