2025 Sombra Grus Base XS
Build
700C/29 in × 50 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Sombra Grus
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 542mm |
| Reach | 372mm |
| Stack to Reach Ratio | 1.46:1 |
| Seat Tube Length, C-T | 485mm |
| Top Tube Length, Effective/Horizontal Unknown | 525mm |
| Top Tube Slope | 8.5deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 74.5deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 289mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 423.9mm |
| Front-Center | 602.4mm |
| Front-Center Horizontal | 598.1mm |
| Wheelbase | 1022mm |
| Wheelbase Max | 1026mm |
| Fork Offset/Rake | 52mm |
| Fork Length, Unknown | 398mm |
| Trail | 79.5mm high |
| Mechanical Trail | 74.4mm |
| Wheel Flop | 26.1mm |
| Standover Height | 773mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 71.4mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 119mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 50mm |
| Tire Outer Diameter | 722mm |
| Bike Length with Tires | 1744mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://sombracycles.com/product/grus-25-gravel-moonsoon-mist-blue/