Compare: 2023 Surly Bikes Preamble Drop Bar MD vs 2024 Surly Bikes Midnight Special Base 56cm

Insights

Average stack and reach vs trend of commuter bikes

Design deviates from other sizes of Surly Bikes Preamble

Somewhat aggressive stack and reach vs trend of endurance road bikes

Design deviates from other sizes of Surly Bikes Midnight Special

Stack	567mm	580mm +13mm
Reach	391mm	393mm +2mm
Stack to Reach Ratio	1.45:1	1.48:1
Seat Tube Length, Unknown	565mm	560mm -5mm
Top Tube Length, Actual C-C	570mm	564mm -6mm
Top Tube Slope	2.9deg	4.6deg +1.7deg
Head Tube Angle	72deg	73deg +1deg
Seat Tube Angle	72.5deg	73deg +0.5deg
Head Tube Length	130mm	140mm +10mm
Bottom Bracket Drop	66mm	65mm -1mm
Bottom Bracket Height	292mm	284mm -8mm
Chainstay Length	435mm	425mm -10mm
Chainstay Length Horizontal	430mm	420mm -10mm
Front-Center	603.7mm	595.6mm -8.1mm
Front-Center Horizontal	600mm	592mm -8mm
Wheelbase	1030mm	1012mm -18mm
Fork Offset/Rake	44mm	40mm -4mm
Fork Length (On-Axis)	400mm	400mm +0mm
Trail	70.1mm high	64.9mm -5.2mm mid/neutral
Mechanical Trail	66.6mm	62mm -4.6mm
Wheel Flop	20.6mm	18.1mm -2.5mm
Standover Height	825.5mm	827mm +1.5mm
Tire to Pedal Spindle	75.7mm 170 mm cranks	71.6mm -4.1mm 175 mm cranks
Pedal Spindle to Ground Clearance	122mm 170 mm cranks	109mm -13mm 175 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	47mm	38mm -9mm
Tire Outer Diameter	716mm	698mm -18mm
Bike Length with Tires	1746mm	1710mm -36mm
Crank Length	170mm	175mm +5mm
Handlebar Width	—	440mm
Stem Length	—	100120mm
Stem Angle	7deg	6deg -1deg
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Steel	Steel
Fork Material	Steel	Steel
Brake Type	Disc	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	https://surlybikes.com/bikes/preamble	https://surlybikes.com/bikes/midnight_special
Brand	Surly Bikes	Surly Bikes
Bike	2023 Preamble Drop Bar	2024 Midnight Special Base
Size	MD	56cm
Category	Commuter	Endurance Road