2025 Crust Bikes Bombora Base Small
Build
650B/27.5 in × 2.3 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Crust Bikes Bombora
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 553mm |
| Reach | 378mm |
| Stack to Reach Ratio | 1.46:1 |
| Seat Tube Length, C-T | 502mm |
| Seat Tube Length, Unknown | 455mm |
| Top Tube Length, Effective/Horizontal Center | 545.9mm |
| Top Tube Length, Effective/Horizontal Unknown | 540mm |
| Top Tube Length, Actual C-C | 525mm |
| Top Tube Slope | 14.1deg |
| Head Tube Angle | 70deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 132mm |
| Bottom Bracket Drop | 64mm |
| Bottom Bracket Height | 230.3mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 420.2mm |
| Front-Center | 603.3mm |
| Front-Center Horizontal | 599.9mm |
| Wheelbase | 1020mm |
| Fork Offset/Rake | 48mm |
| Trail | 56mm mid/neutral |
| Mechanical Trail | 52.7mm |
| Wheel Flop | 18mm |
| Standover Height | 775mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 139mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 60.3mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.3mm |
| Tire Outer Diameter | 588.6mm |
| Bike Length with Tires | 1608.6mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://crustbikes.com/collections/frames/products/celos-bombora