2017 Surly Bikes Steamroller Base 56cm
Build
700C/29 in × 38 mm
Insights
Somewhat upright stack and reach vs trend of track/fixed-gear bikes
Design deviates from other sizes of Surly Bikes Steamroller
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 559mm |
| Reach | 402mm |
| Stack to Reach Ratio | 1.39:1 |
| Seat Tube Length, C-TTT | 560mm |
| Top Tube Length, Effective/Horizontal Center | 568mm |
| Top Tube Slope | 0.3deg |
| Head Tube Angle | 73.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 136mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 279mm |
| Chainstay Length | 398mm |
| Chainstay Length Max | 398mm |
| Chainstay Length Horizontal | 391.8mm |
| Chainstay Length Horizontal Max | 391.8mm |
| Front-Center | 591mm |
| Front-Center Horizontal | 586.8mm |
| Wheelbase | 978.6mm |
| Wheelbase Max | 978.6mm |
| Fork Offset/Rake | 38mm |
| Fork Length (Axle-To-Crown) | 375mm |
| Trail | 63.8mm mid/neutral |
| Mechanical Trail | 61.1mm |
| Wheel Flop | 17.4mm |
| Standover Height | 807.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 72mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 109mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 38mm |
| Tire Outer Diameter | 698mm |
| Bike Length with Tires | 1676.6mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
| Features | Single-speed capable |
Source:Bike Counterculture Geometry Database