2021 Surly Bikes Midnight Special Base with Enve Gravel Disc Fork 60cm

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
620mm
Reach
409mm
Stack to Reach Ratio
1.52:1
Seat Tube Length, C-TTT
600mm
Top Tube Length, Effective/Horizontal HT Top
605mm
Top Tube Length, Actual C-C
597mm
Top Tube Slope
2.8deg
Head Tube Angle
73.5deg
Seat Tube Angle
72.5deg
Head Tube Length
180mm
Bottom Bracket Drop
65mm
Bottom Bracket Height
274mm
Chainstay Length
425mm
Chainstay Length Horizontal
420mm
Front-Center
619.4mm
Front-Center Horizontal
616mm
Wheelbase
1036mm
Fork Offset/Rake
47mm
Fork Length (Axle-To-Crown)
395mm
Trail
51.4mm
mid/​neutral
Mechanical Trail
49.3mm
Wheel Flop
14mm
Standover Height
866mm
Tire to Pedal Spindle Distance
With 175 mm cranks
105.4mm
Pedal Spindle to Ground Clearance
With 175 mm cranks
99mm

Base with Enve Gravel Disc Fork Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
47mm
Tire Outer Diameter
678mm
Bike Length with Tires
1714mm
Crank Length
175mm
Handlebar Width
460mm
Stem Length
120mm
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