2019 Specialized Bicycles Men's Sirrus Base S
Build
700C/29 in × 32 mm
Insights
Design deviates from other sizes of Specialized Bicycles Men's Sirrus
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 564mm |
| Reach | 388mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-T | 415mm |
| Top Tube Length, Effective/Horizontal HT Top | 555mm |
| Top Tube Slope | 18.2deg |
| Head Tube Angle | 70deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 153mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 273mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 434.4mm |
| Front-Center | 626mm |
| Front-Center Horizontal | 622.6mm |
| Wheelbase | 1057mm |
| Fork Offset/Rake | 51mm |
| Fork Length (Axle-To-Crown) | 390mm |
| Trail | 70.6mm high |
| Mechanical Trail | 66.3mm |
| Wheel Flop | 22.7mm |
| Standover Height | 735mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 113mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 103mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 32mm |
| Tire Outer Diameter | 686mm |
| Bike Length with Tires | 1743mm |
| Crank Length | 170mm |
| Handlebar Width | 580mm |
| Stem Length | 80mm |
| Stem Angle | 7deg |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/mens-sirrus/p/154507?color=225887-154507