2026 OXFELD Observer gravel Base S
Build
28mm BSD × 45 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of OXFELD Observer gravel
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 549mm |
| Reach | 377mm |
| Stack to Reach Ratio | 1.46:1 |
| Seat Tube Length, Unknown | 470mm |
| Top Tube Length, Effective/Horizontal Unknown | 550mm |
| Top Tube Slope | 10.9deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73.1deg |
| Head Tube Length | 115mm |
| Chainstay Length | 440mm |
| Wheelbase | 1027mm |
| Trail | — — |
| Tire to Pedal Spindle Distance With 170 mm cranks | — |
| Pedal Spindle to Ground Clearance With 170 mm cranks | — |
Base Build
| Wheel Size | 28mm BSD |
| Tire Width | 45mm |
| Tire Outer Diameter | 118mm |
| Bike Length with Tires | 1145mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Published Sizing Recommendations
| Height | 13 ft 4 in to |
Source:www.centrumrowerowe.pl