2020 Surly Bikes Wednesday Base

	XS	S	M	L	XL
Stack	573mm	578mm	587mm	597mm	606mm
Reach	400mm	420mm	436mm	453mm	471mm
Stack to Reach Ratio	1.43:1	1.38:1	1.35:1	1.32:1	1.29:1
Seat Tube Length, Unknown	316mm	366mm	416mm	466mm	516mm
Top Tube Length, Actual C-C	571mm	577mm	590mm	606mm	627mm
Top Tube Slope	28.9deg	23.4deg	18.8deg	14.4deg	10.2deg
Head Tube Angle	69deg	69deg	69deg	69deg	69deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	95mm	100mm	110mm	120mm	130mm
Bottom Bracket Drop	55mm	55mm	55mm	55mm	55mm
Bottom Bracket Height	319.5mm	319.5mm	319.5mm	319.5mm	319.5mm
Chainstay Length	435mm	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	431.5mm	431.5mm	431.5mm	431.5mm	431.5mm
Front-Center	651.8mm	671.8mm	692.7mm	713.6mm	734.6mm
Front-Center Horizontal	649.5mm	669.5mm	690.5mm	711.5mm	732.5mm
Wheelbase	1081mm	1101mm	1122mm	1143mm	1164mm
Fork Offset/Rake	47mm	47mm	47mm	47mm	47mm
Fork Length (On-Axis)	468mm	468mm	468mm	468mm	468mm
Trail	93.4mm very high	93.4mm very high	93.4mm very high	93.4mm very high	93.4mm very high
Mechanical Trail	87.2mm	87.2mm	87.2mm	87.2mm	87.2mm
Wheel Flop	31.3mm	31.3mm	31.3mm	31.3mm	31.3mm
Standover Height	711mm	737mm	774mm	807mm	841mm
Tire to Pedal Spindle	107.3mm 170 mm cranks	127.3mm 170 mm cranks	143.2mm 175 mm cranks	164.1mm 175 mm cranks	185.1mm 175 mm cranks
Pedal Spindle to Ground Clearance	149.5mm 170 mm cranks	149.5mm 170 mm cranks	144.5mm 175 mm cranks	144.5mm 175 mm cranks	144.5mm 175 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://surlybikes.com/bikes/wednesday

Geometry