Bike-on-Bike
Default Config
Default Config
Insights
Somewhat upright stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Serk Titanium A21
Somewhat upright stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Mondince FM 366
Geometry
Stack | 548mm | 562mm +14mm |
Reach | 364mm | 364mm +0mm |
Stack to Reach Ratio | 1.51:1 | 1.54:1 |
Seat Tube Length, C-T | 485mm | — |
Seat Tube Length, C-TTT | — | 460mm |
Top Tube Length, Effective/Horizontal Center | — | 525mm |
Top Tube Length, Effective/Horizontal HT Top | 523mm | — |
Top Tube Slope | 9.3deg | 11.5deg +2.2deg |
Head Tube Angle | 70deg | 70.5deg +0.5deg |
Seat Tube Angle | 74deg | 74deg +0deg |
Head Tube Length | 110mm | 125mm +15mm |
Bottom Bracket Drop | 75mm | 80mm +5mm |
Bottom Bracket Height | 264mm | 288mm +24mm |
Chainstay Length | 430mm | 430mm +0mm |
Chainstay Length Horizontal | 423.4mm | 422.5mm -0.9mm |
Front-Center | 589mm | 597.9mm +8.9mm |
Front-Center Horizontal | 584.6mm | 592.5mm +7.9mm |
Wheelbase | 1008mm | 1015mm +7mm |
Fork Offset/Rake | 45mm | 54.5mm +9.5mm |
Fork Length (On-Axis) | — | 405mm |
Trail | 75.5mm high | 72.5mm -3mm high |
Mechanical Trail | 70.9mm | 68.3mm -2.6mm |
Wheel Flop | 24.3mm | 22.8mm -1.5mm |
Tire to Pedal Spindle | 80mm 170 mm cranks | 59.9mm -20.1mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 94mm 170 mm cranks | 118mm +24mm 170 mm cranks |
Build
Wheel Size | 650B/27.5 in 584 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 47mm | 57mm +10mm |
Tire Outer Diameter | 678mm | 736mm +58mm |
Bike Length with Tires | 1686mm | 1751mm +65mm |
| 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/a21/ | Mondince.com |
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