2025 Factor Bikes OSTRO GRAVEL Carbon 61
Build
700C/29 in × 40 mm
Insights
Somewhat upright stack and reach vs trend of progressive gravel bikes
Design deviates from other sizes of Factor Bikes OSTRO GRAVEL
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 625mm |
| Reach | 422mm |
| Stack to Reach Ratio | 1.48:1 |
| Seat Tube Length, C-T | 545mm |
| Top Tube Slope | 10.1deg |
| Head Tube Angle | 72.3deg |
| Seat Tube Angle | 73.5deg |
| Bottom Bracket Drop | 74mm |
| Bottom Bracket Height | 277mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 418.5mm |
| Front-Center | 654.7mm |
| Front-Center Horizontal | 650.5mm |
| Wheelbase | 1069mm |
| Fork Offset/Rake | 50mm |
| Trail | 59.5mm mid/neutral |
| Mechanical Trail | 56.7mm |
| Wheel Flop | 17.2mm |
| Standover Height | 847mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 133.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 107mm |
Carbon Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1771mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://factorbikes.com/bikes/ostro-gravel