Bike-on-Bike
Default Config
Default Config
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Serk Titanium A30M
Average stack and reach vs trend of progressive gravel bikes
Design deviates from other sizes of Factor Bikes OSTRO GRAVEL
Geometry
Stack | 529mm | 535mm +6mm |
Reach | 374mm | 385mm +11mm |
Stack to Reach Ratio | 1.41:1 | 1.39:1 |
Seat Tube Length, C-T | 490mm | 468mm -22mm |
Top Tube Length, Effective/Horizontal HT Top | 526mm | — |
Top Tube Slope | 6.5deg | 9.4deg +2.9deg |
Head Tube Angle | 72deg | 71.3deg -0.7deg |
Seat Tube Angle | 74deg | 74deg +0deg |
Head Tube Length | 109mm | — |
Bottom Bracket Drop | 73mm | 76mm +3mm |
Bottom Bracket Height | 266mm | 275mm +9mm |
Chainstay Length | 420mm | 420mm +0mm |
Chainstay Length Horizontal | 413.6mm | 413.1mm -0.5mm |
Front-Center | 572.1mm | 604.7mm +32.6mm |
Front-Center Horizontal | 567.4mm | 599.9mm +32.5mm |
Wheelbase | 981mm | 1013mm +32mm |
Fork Offset/Rake | 43mm | 56mm +13mm |
Trail | 64.9mm mid/neutral | 59.7mm -5.2mm mid/neutral |
Mechanical Trail | 61.8mm | 56.5mm -5.3mm |
Wheel Flop | 19.1mm | 18.1mm -1mm |
Standover Height | — | 767mm |
Tire to Pedal Spindle | 63.1mm 170 mm cranks | 83.7mm +20.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 96mm 170 mm cranks | 105mm +9mm 170 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 40mm +12mm |
Tire Outer Diameter | 678mm | 702mm +24mm |
Bike Length with Tires | 1659mm | 1715mm +56mm |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Titanium | Carbon/Composite |
| Fork Material | Carbon/Composite | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
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| Source | https://www.serk.cc/a30m/ | https://factorbikes.com/bikes/ostro-gravel |
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