Bike-on-Bike
Default Config
Default Config
Insights
Average stack and reach vs trend of all-road/gravel bikes
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Serk Titanium A21
Geometry
Stack | 568mm | 575mm +7mm |
Reach | 377mm | 377mm +0mm |
Stack to Reach Ratio | 1.51:1 | 1.53:1 |
Seat Tube Length, C-T | — | 510mm |
Seat Tube Length, Unknown | 480mm | — |
Top Tube Length, Effective/Horizontal HT Top | — | 549mm |
Top Tube Length, Actual C-C | 545mm | — |
Top Tube Slope | 11.9deg | 9.4deg -2.5deg |
Head Tube Angle | 70.5deg | 70deg -0.5deg |
Seat Tube Angle | 73.5deg | 73.5deg +0deg |
Head Tube Length | 145mm | 139mm -6mm |
Bottom Bracket Drop | 75mm | 75mm +0mm |
Bottom Bracket Height | 281mm | 264mm -17mm |
Chainstay Length | 430mm | 430mm +0mm |
Chainstay Length Horizontal | 423.4mm | 423.4mm +0mm |
Front-Center | 610.2mm | 612mm +1.8mm |
Front-Center Horizontal | 605.6mm | 606.6mm +1mm |
Wheelbase | 1029mm | 1030mm +1mm |
Fork Offset/Rake | 51mm | 45mm -6mm |
Fork Length (On-Axis) | 395mm | — |
Trail | 72mm high | 75.5mm +3.5mm high |
Mechanical Trail | 67.8mm | 70.9mm +3.1mm |
Wheel Flop | 22.6mm | 24.3mm +1.7mm |
Standover Height | 790mm | — |
Tire to Pedal Spindle | 84.2mm 170 mm cranks | 103mm +18.8mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 111mm 170 mm cranks | 94mm -17mm 170 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 45mm | 47mm +2mm |
Tire Outer Diameter | 712mm | 678mm -34mm |
Bike Length with Tires | 1741mm | 1708mm -33mm |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Carbon/Composite | Titanium |
| Fork Material | Carbon/Composite | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
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| Source | https://www.winspace.cc/products/g3-gravel | https://www.serk.cc/a21/ |
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