2021 Surly Bikes Midnight Special Base 54cm

Build

650B/27.5 in × 47 mm

Insights

Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Surly Bikes Midnight Special

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
560mm
Reach
389mm
Stack to Reach Ratio
1.44:1
Seat Tube Length, C-TTT
540mm
Top Tube Length, Effective/Horizontal HT Top
555mm
Top Tube Length, Actual C-C
552mm
Top Tube Slope
2.4deg
Head Tube Angle
72.5deg
Seat Tube Angle
73.5deg
Head Tube Length
125mm
Bottom Bracket Drop
65mm
Bottom Bracket Height
274mm
Chainstay Length
425mm
Chainstay Length Horizontal
420mm
Front-Center
601.5mm
Front-Center Horizontal
598mm
Wheelbase
1018mm
Fork Offset/Rake
50mm
Fork Length (Axle-To-Crown)
400mm
Trail
54.5mm
mid/​neutral
Mechanical Trail
51.9mm
Wheel Flop
15.6mm
Standover Height
806mm
Tire to Pedal Spindle Distance
With 175 mm cranks
87.5mm
Pedal Spindle to Ground Clearance
With 175 mm cranks
99mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
47mm
Tire Outer Diameter
678mm
Bike Length with Tires
1696mm
Crank Length
175mm
Handlebar Width
420mm
Stem Length
100mm
Stem Angle
6deg
Suspension Type
Rigid, non-suspension corrected
Bar Type
Drop Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Disc
Source:https://surlybikes.com/bikes/midnight_special