2018-2019 Surly Bikes Midnight Special Carbon fork

	40cm	46cm	50cm	54cm	56cm	58cm	60cm	64cm
Stack	531mm	538mm	544mm	560mm	580mm	599mm	620mm	641mm
Reach	363mm	366mm	379mm	389mm	393mm	402mm	409mm	423mm
Stack to Reach Ratio	1.46:1	1.47:1	1.44:1	1.44:1	1.48:1	1.49:1	1.52:1	1.52:1
Seat Tube Length, C-TTT	400mm	460mm	500mm	540mm	560mm	580mm	600mm	640mm
Top Tube Length, Effective/Horizontal HT Top	500mm	520mm	540mm	555mm	570mm	585mm	605mm	625mm
Top Tube Length, Actual C-C	487mm	506mm	531mm	552mm	564mm	579mm	597mm	622mm
Top Tube Slope	14.9deg	8.7deg	4.9deg	2.4deg	2.6deg	2.5deg	2.8deg	1.1deg
Head Tube Angle	71deg	71.5deg	72deg	72.5deg	73deg	73deg	73.5deg	74deg
Seat Tube Angle	75.5deg	74deg	73.5deg	73.5deg	73deg	73deg	72.5deg	72.5deg
Head Tube Length	95mm	100mm	110mm	125mm	140mm	160mm	180mm	200mm
Bottom Bracket Drop	70mm	70mm	65mm	65mm	65mm	65mm	65mm	65mm
Bottom Bracket Height	269mm	269mm	274mm	274mm	274mm	274mm	274mm	274mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	419.2mm	419.2mm	420mm	420mm	420mm	420mm	420mm	420mm
Front-Center	578.1mm	579.1mm	590.6mm	601.5mm	595.6mm	610.5mm	619.4mm	633.3mm
Front-Center Horizontal	573.8mm	574.8mm	587mm	598mm	592mm	607mm	616mm	630mm
Wheelbase	993mm	994mm	1007mm	1018mm	1012mm	1027mm	1036mm	1050mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm	50mm	50mm	50mm
Fork Length (Axle-To-Crown)	395mm	395mm	395mm	395mm	395mm	395mm	395mm	395mm
Trail	63.9mm mid/neutral	60.7mm mid/neutral	57.6mm mid/neutral	54.5mm mid/neutral	51.4mm mid/neutral	51.4mm mid/neutral	48.3mm mid/neutral	45.2mm mid/neutral
Mechanical Trail	60.4mm	57.6mm	54.8mm	51.9mm	49.1mm	49.1mm	46.3mm	43.4mm
Wheel Flop	19.7mm	18.3mm	16.9mm	15.6mm	14.4mm	14.4mm	13.1mm	12mm
Standover Height	720mm	751mm	778mm	806mm	827mm	846mm	866mm	895mm
Tire to Pedal Spindle	69.1mm 170 mm cranks	70.1mm 170 mm cranks	81.6mm 170 mm cranks	92.5mm 170 mm cranks	86.6mm 170 mm cranks	101.5mm 170 mm cranks	110.4mm 170 mm cranks	124.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	99mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks

	40cm	46cm	50cm	54cm	56cm	58cm	60cm	64cm
Wheel Size	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD
Tire Width	47mm	47mm	47mm	47mm	47mm	47mm	47mm	47mm
Tire Width Max	2.35in	2.35in	2.35in	2.35in	2.35in	2.35in	2.35in	2.35in
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1671mm	1672mm	1685mm	1696mm	1690mm	1705mm	1714mm	1728mm

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

All-road/Gravel

Source:https://surlybikes.com/bikes/midnight_special

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2018-2019 Surly Bikes Midnight Special Carbon fork

Geometry

Carbon fork Build

Stack and Reach vs. Category Trend