2018-2019 Surly Bikes Midnight Special Base 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 | 40mm |
| Fork Length (Axle-To-Crown) | 400mm |
| Trail | 58.7mm mid/neutral |
| Mechanical Trail | 56.3mm |
| Wheel Flop | 16mm |
| Standover Height | 866mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 110.4mm |
| 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 | 1714mm |
| 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