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
Somewhat upright stack and reach vs trend of progressive gravel bikes
Geometry
Stack | 575mm | 580mm +5mm |
Reach | 390mm | 402mm +12mm |
Stack to Reach Ratio | 1.47:1 | 1.44:1 |
Seat Tube Length, C-T | 530mm | 500mm -30mm |
Top Tube Length, Effective/Horizontal HT Top | 566mm | — |
Top Tube Slope | 7.1deg | 10.5deg +3.4deg |
Head Tube Angle | 73deg | 72.3deg -0.7deg |
Seat Tube Angle | 73deg | 73.5deg +0.5deg |
Head Tube Length | 154mm | — |
Bottom Bracket Drop | 73mm | 74mm +1mm |
Bottom Bracket Height | 266mm | 277mm +11mm |
Chainstay Length | 420mm | 423mm +3mm |
Chainstay Length Horizontal | 413.6mm | 416.5mm +2.9mm |
Front-Center | 592.9mm | 617mm +24.1mm |
Front-Center Horizontal | 588.4mm | 612.5mm +24.1mm |
Wheelbase | 1002mm | 1029mm +27mm |
Fork Offset/Rake | 43mm | 50mm +7mm |
Trail | 58.7mm mid/neutral | 59.5mm +0.8mm mid/neutral |
Mechanical Trail | 56.1mm | 56.7mm +0.6mm |
Wheel Flop | 16.4mm | 17.2mm +0.8mm |
Standover Height | — | 802mm |
Tire to Pedal Spindle | 83.9mm 170 mm cranks | 96mm +12.1mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 96mm 170 mm cranks | 107mm +11mm 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 | 1680mm | 1731mm +51mm |
| 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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