2018-2019 Surly Bikes Midnight Special Base 58cm

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
599mm
Reach
402mm
Stack to Reach Ratio
1.49:1
Seat Tube Length, C-TTT
580mm
Top Tube Length, Effective/Horizontal HT Top
585mm
Top Tube Length, Actual C-C
579mm
Top Tube Slope
2.5deg
Head Tube Angle
73deg
Seat Tube Angle
73deg
Head Tube Length
160mm
Bottom Bracket Drop
65mm
Bottom Bracket Height
274mm
Chainstay Length
425mm
Chainstay Length Horizontal
420mm
Front-Center
610.5mm
Front-Center Horizontal
607mm
Wheelbase
1027mm
Fork Offset/Rake
40mm
Fork Length (Axle-To-Crown)
400mm
Trail
61.8mm
mid/​neutral
Mechanical Trail
59.1mm
Wheel Flop
17.3mm
Standover Height
846mm
Tire to Pedal Spindle Distance
With 170 mm cranks
101.5mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
104mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
47mm
Tire Outer Diameter
678mm
Bike Length with Tires
1705mm
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/geometry