2021 Surly Bikes Midnight Special Base with Enve Gravel Disc Fork 46cm

Build

650B/27.5 in × 47 mm

Insights

Average 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
538mm
Reach
366mm
Stack to Reach Ratio
1.47:1
Seat Tube Length, C-TTT
460mm
Top Tube Length, Effective/Horizontal HT Top
520mm
Top Tube Length, Actual C-C
506mm
Top Tube Slope
8.7deg
Head Tube Angle
71.5deg
Seat Tube Angle
74deg
Head Tube Length
100mm
Bottom Bracket Drop
70mm
Bottom Bracket Height
269mm
Chainstay Length
425mm
Chainstay Length Horizontal
419.2mm
Front-Center
579.1mm
Front-Center Horizontal
574.8mm
Wheelbase
994mm
Fork Offset/Rake
47mm
Fork Length (Axle-To-Crown)
395mm
Trail
63.9mm
mid/​neutral
Mechanical Trail
60.6mm
Wheel Flop
19.2mm
Standover Height
751mm
Tire to Pedal Spindle Distance
With 170 mm cranks
70.1mm
Pedal Spindle to Ground Clearance
With 170 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
1672mm
Crank Length
170mm
Handlebar Width
400mm
Stem Length
80mm
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