Bike-on-Bike
Default Config
Default Config
Insights
Very upright 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 | 590mm | 575mm -15mm |
Reach | 365mm | 377mm +12mm |
Stack to Reach Ratio | 1.62:1 | 1.53:1 |
Seat Tube Length, C-T | — | 510mm |
Seat Tube Length, C-TTT | 520mm | — |
Top Tube Length, Effective/Horizontal Center | 545mm | — |
Top Tube Length, Effective/Horizontal HT Top | — | 549mm |
Top Tube Slope | 8deg | 9.4deg +1.4deg |
Head Tube Angle | 71.5deg | 70deg -1.5deg |
Seat Tube Angle | 73deg | 73.5deg +0.5deg |
Head Tube Length | 150mm | 139mm -11mm |
Bottom Bracket Drop | 80mm | 75mm -5mm |
Bottom Bracket Height | 288mm | 264mm -24mm |
Chainstay Length | 430mm | 430mm +0mm |
Chainstay Length Horizontal | 422.5mm | 423.4mm +0.9mm |
Front-Center | 598.9mm | 612mm +13.1mm |
Front-Center Horizontal | 593.5mm | 606.6mm +13.1mm |
Wheelbase | 1016mm | 1030mm +14mm |
Fork Offset/Rake | 54.9mm | 45mm -9.9mm |
Fork Length (On-Axis) | 405mm | — |
Trail | 65.3mm high | 75.5mm +10.2mm high |
Mechanical Trail | 61.9mm | 70.9mm +9mm |
Wheel Flop | 19.6mm | 24.3mm +4.7mm |
Tire to Pedal Spindle | 60.9mm 170 mm cranks | 103mm +42.1mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 118mm 170 mm cranks | 94mm -24mm 170 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 57mm | 47mm -10mm |
Tire Outer Diameter | 736mm | 678mm -58mm |
Bike Length with Tires | 1752mm | 1708mm -44mm |
| 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 | Mondince.com | https://www.serk.cc/a21/ |
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