2000 Surly Bikes 1x1 Base

	Small	Medium	Large	X-Large
Stack	516.5mm	527.9mm	549.2mm	553.8mm
Reach	390.8mm	422.3mm	430.8mm	444.4mm
Stack to Reach Ratio	1.32:1	1.25:1	1.27:1	1.25:1
Seat Tube Length, C-TTT	406.4mm	457.2mm	508mm	558.8mm
Top Tube Length, Effective/Horizontal Center	550mm	585mm	600mm	615mm
Top Tube Length, Actual C-C	528.1mm	567.7mm	588.2mm	615mm
Top Tube Slope	11.9deg	7.2deg	4.3deg	0deg
Head Tube Angle	71deg	71deg	71deg	71deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	89mm	102mm	114mm	134mm
Bottom Bracket Drop	42.5mm	42.5mm	42.5mm	42.5mm
Bottom Bracket Height	295.5mm	295.5mm	295.5mm	295.5mm
Chainstay Length	419mm	419mm	419mm	419mm
Chainstay Length Horizontal	416.8mm	416.8mm	416.8mm	416.8mm
Front-Center	603.2mm	638.5mm	651.1mm	669.4mm
Front-Center Horizontal	601.7mm	637.1mm	649.7mm	668.1mm
Wheelbase	1018.5mm	1053.9mm	1066.5mm	1084.9mm
Fork Offset/Rake	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	421mm	421mm	421mm	421mm
Trail	68.8mm high	68.8mm high	68.8mm high	68.8mm high
Mechanical Trail	65mm	65mm	65mm	65mm
Wheel Flop	21.2mm	21.2mm	21.2mm	21.2mm
Standover Height	736.6mm	768.2mm	797.6mm	830mm
Tire to Pedal Spindle	95.2mm 170 mm cranks	130.5mm 170 mm cranks	143.1mm 170 mm cranks	161.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	125.5mm 170 mm cranks	125.5mm 170 mm cranks	125.5mm 170 mm cranks	125.5mm 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://surlybikes.com/uploads/downloads/2000_Surly_Catalog.pdf

Geometry