2017 Surly Bikes 1x1 Base

Somewhat aggressive stack and reachvs category

	xSmall (14)	Small (16)	Medium (18)	Medium (18)	Large (20)	xLarge (22)
Stack	551mm	561mm	570mm	570mm	584mm	603mm
Reach	377mm	399mm	421mm	421mm	436mm	446mm
Stack to Reach Ratio	1.46:1	1.41:1	1.35:1	1.35:1	1.34:1	1.35:1
Seat Tube Length, C-T	355.6mm	406.4mm	457.5mm	457.5mm	508.8mm	558.8mm
Top Tube Length, Effective/Horizontal Center	546mm	571mm	596mm	596mm	616mm	631mm
Top Tube Slope	23.7deg	18.4deg	13.4deg	13.4deg	9.5deg	6.4deg
Head Tube Angle	71deg	71deg	71deg	71deg	71deg	71deg
Seat Tube Angle	73deg	73deg	73deg	73deg	73deg	73deg
Head Tube Length	90mm	100mm	110mm	110mm	125mm	145mm
Bottom Bracket Drop	40mm	40mm	40mm	40mm	40mm	40mm
Bottom Bracket Height	297.9mm	297.9mm	297.9mm	297.9mm	297.9mm	297.9mm
Chainstay Length	419mm	419mm	419mm	419mm	419mm	419mm
Chainstay Length Horizontal	417.1mm	417.1mm	417.1mm	417.1mm	417.1mm	417.1mm
Front-Center	596.2mm	621.5mm	646.8mm	646.8mm	667.3mm	682.9mm
Front-Center Horizontal	594.8mm	620.2mm	645.5mm	645.5mm	666.1mm	681.7mm
Wheelbase	1011.9mm	1037.3mm	1062.6mm	1062.6mm	1083.2mm	1098.8mm
Fork Offset/Rake	40mm	40mm	40mm	40mm	40mm	40mm
Fork Length (Axle-To-Crown)	453mm	453mm	453mm	453mm	453mm	453mm
Trail	74.1mm high	74.1mm high	74.1mm high	74.1mm high	74.1mm high	74.1mm high
Mechanical Trail	70mm	70mm	70mm	70mm	70mm	70mm
Wheel Flop	22.8mm	22.8mm	22.8mm	22.8mm	22.8mm	22.8mm
Standover Height	717mm	745mm	774mm	774mm	804mm	838mm
Tire to Pedal Spindle	88.2mm 170 mm cranks	113.6mm 170 mm cranks	138.8mm 170 mm cranks	138.8mm 170 mm cranks	159.4mm 170 mm cranks	175mm 170 mm cranks
Pedal Spindle to Ground Clearance	127.9mm 170 mm cranks	127.9mm 170 mm cranks	127.9mm 170 mm cranks	127.9mm 170 mm cranks	127.9mm 170 mm cranks	127.9mm 170 mm cranks

	xSmall (14)	Small (16)	Medium (18)	Medium (18)	Large (20)	xLarge (22)
Wheel Size	26 in 559 mm BSD	26 in 559 mm BSD	26 in 559 mm BSD	26 in 559 mm BSD	26 in 559 mm BSD	26 in 559 mm BSD
Tire Width	2.3in	2.3in	2.3in	2.3in	2.3in	2.3in
Tire Outer Diameter	675.8mm	675.8mm	675.8mm	675.8mm	675.8mm	675.8mm
Bike Length with Tires	1687.7mm	1713.1mm	1738.4mm	1738.4mm	1759mm	1774.6mm

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

Rigid MTB

Source:Bike Counterculture Geometry Database, https://surlybikes.com/bikes/legacy/1x1_2012-2014

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2017 Surly Bikes 1x1 Base

Geometry

Base Build

Stack and Reach vs. Category Trend