2021 Surly Bikes Midnight Special Base with Enve Gravel Disc Fork 64cm

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
641mm
Reach
423mm
Stack to Reach Ratio
1.52:1
Seat Tube Length, C-TTT
640mm
Top Tube Length, Effective/Horizontal HT Top
625mm
Top Tube Length, Actual C-C
622mm
Top Tube Slope
1.1deg
Head Tube Angle
74deg
Seat Tube Angle
72.5deg
Head Tube Length
200mm
Bottom Bracket Drop
65mm
Bottom Bracket Height
274mm
Chainstay Length
425mm
Chainstay Length Horizontal
420mm
Front-Center
633.3mm
Front-Center Horizontal
630mm
Wheelbase
1050mm
Fork Offset/Rake
47mm
Fork Length (Axle-To-Crown)
395mm
Trail
48.3mm
mid/​neutral
Mechanical Trail
46.4mm
Wheel Flop
12.8mm
Standover Height
895mm
Tire to Pedal Spindle Distance
With 175 mm cranks
119.3mm
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
1728mm
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