2025 T-Lab Bikes X1 Base S (54)
Build
700C/29 in × 40 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 558mm |
| Reach | 379mm |
| Stack to Reach Ratio | 1.47:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal Unknown | 544mm |
| Top Tube Slope | 8.6deg |
| Head Tube Angle | 71.25deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 281mm |
| Chainstay Length | 426mm |
| Chainstay Length Horizontal | 420.2mm |
| Front-Center | 597mm |
| Front-Center Horizontal | 596.8mm |
| Wheelbase | 1017mm |
| Fork Offset/Rake | 50mm |
| Trail | 66.4mm high |
| Mechanical Trail | 62.8mm |
| Wheel Flop | 20.2mm |
| Standover Height | 780mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 76mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 111mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1719mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Titanium |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 463 ft 2 in to |
Source:https://tlab-bike.files.svdcdn.com/production/upload/images/X1_R1_Geometries.pdf