2026 Specialized Sirrus X 4.0 XXS
Build
700C/29 in × 38 mm
Insights
Design deviates from other sizes of Specialized Sirrus X
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 587mm |
| Reach | 355mm |
| Stack to Reach Ratio | 1.65:1 |
| Seat Tube Length, C-T | 360mm |
| Top Tube Length, Effective/Horizontal Center | 529mm |
| Top Tube Slope | 27.9deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 111mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 279mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 434.4mm |
| Front-Center | 602mm |
| Front-Center Horizontal | 598.6mm |
| Wheelbase | 1033mm |
| Fork Offset/Rake | 47.1mm |
| Fork Length, Unknown | 395mm |
| Trail | 80.2mm very high |
| Mechanical Trail | 75.1mm |
| Wheel Flop | 26.3mm |
| Standover Height | 722mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 88mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 114mm |
4.0 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 38mm |
| Tire Outer Diameter | 698mm |
| Bike Length with Tires | 1731mm |
| Crank Length | 165mm |
| Handlebar Width | 680mm |
| Stem Length | 60mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/sirrus-x-40/p/200213?color=322032-200213